... Title : High Voltage AC Power Transmission Lines and Communications Receiver Sites. Descriptive Note : Technical rept. May 75-Mar 76,. ...

With the increasing use of dc transmission in existing ac networks, the possibility of ac and dc circuits running parallel to each other and sharing the same right-of-way or even the same tower is increasing. It is important from the point of view of design of such hybrid ac/dc transmission ...

A short discussion of the effects of the Electromagnetic Interference (EMI) radiated from High Voltage AC (HVAC) Power Transmission lines on HF Communications Receivers is followed by the description of a method for choosing communications receiver sites ...

... was developed and implemented to study these discharges under conditions found in proposed ac superconducting power-transmission lines. ...

... The constant LRC model with the AC resistance showed potential for predicting the gain in fluid transmission lines with turbulent flow. ...

... rectifying the AC voltage signals generated by the ... and a source impedance 91 represent the ... Disclosed Method" section, of a transmission line ...

The electrical effects of power transmission lines and the effects that such lines may have on man and his environment are described. The electric effects include corona discharges, electric and magnetic field effects of ac lines, and induced currents and...

A compact, easy to fabricate, noninductive, low surface magnetic field superconductor transmission line that has minimal stay fields is described.

Contents: A rated voltage of 1,200 kv for A-C power transmission; Finding the optimum parameters for an EHV line; Calculations on transients in long lines; Operational method for calculations on transients in lines with lumped inhomogeneities, using the d...

This booklet describes the electrical effects of ac and dc transmission lines and reviews the state-of-the-art knowledge on the possible biologial effects of such lines. Electrical effects are defined as those resulting from electric and magnetic fields a...

A method and apparatus for locating defects in electrical conduits, hollow cables, or pipes above the ground, using a transmission line wherein one of the lines is the conduit under test. A high-frequency AC generator is used to feed the transmission line...

Corona cages have been in use as a means for predicting AN and RI generated from DC transmission lines. The static conductor surface gradient is used as the main variable in predicting corona performance of AC transmission line. However, this method canno...

A method is developed for calculating the induced voltages on fence wires/pipelines underneath AC power transmission lines. The method is based on the charge simulation technique and takes into account the disturbances of the electric field and potential due to the presence of the fence wire/pipeline underneath the ...

The performance of SVC's on an ac network containing series-compensated lines creates some new application considerations. These considerations are defined in this paper.

� Long term economic models identify lower cost transmission alternativescost transmission alternatives on the HVDC lines AC li l di t i ll i th 40%� AC line loading typically run in the 40% range #12;Transmission � WWW. JCSPStudy.org � ...

The electrical effects of power transmission lines and the effects that such lines may have on man and his environment are described. The electric effects include corona discharges, electric and magnetic field effects of ac lines, and induced currents and voltages from dc ...

References are contained for HVDC systems, converter stations and components, overhead transmission lines, cable transmission, system design and operations, simulation of high voltage direct current systems, high-voltage direct current installations, and flexible AC transmission system (FACTS).

The map displays extra-high voltage electric transmission lines (345 kilovolt ac, 500 kilovolt ac, 765 kilovolt ac, +-400 kilovolt dc, and +-250 kilovolt dc capacities) in the 48 contiguous states (plus the District of Columbia). Also shown are major cities, substations, and generatings ...

An annual map shows the location of extra-high voltage electric transmission lines (345 kilovolt ac, 500 kilovolt ac, 765 kilovolt ac, +-400 kilovolt dc, +-250 kilovolt dc capacities) in the 48 contiguous states and the District of Columbia. Major cities, substations, and generating plants ...

An annual map shows the location of extra-high voltage electric transmission lines (345 kilovolt AC, 500 kilovolt AC, 765 kilovolt AC, +- 400 kilovolt DC, +- 250 kilovolt DC capacities) in the 48 contiguous states and the District of Columbia. Major cities, substations, and generating plants ...

The map displays extra-high voltage electric transmission lines (345 kilovolt ac, 500 kilovolt ac, 765 kilovolt ac, +-400 kilovolt dc, and +-250 kilovolt dc capacities) in the 48 contiguous states (plus the District of Columbia). Also shown are major citi...

Cleveland Electric Illuminating Co. and Ohio State University present (1) a model of the system involving parallel pipelines and power transmission lines and (2) equations to accurately predict the expected induced voltages on pipelines. Case histories of tests include evaluations of variables influencing induction.

The displacement or deferral of conventional AC transmission line installation is a key benefit associated with several technologies being developed with the support of the U.S. Department of Energy's Office of Energy Management (OEM). Previous benefits a...

Database, 2003, http://www.nerc.com/~esd/2003Brochure.pdf" "Notes:" "1 Circuit miles of AC lines 230 kV and above." "2 Data includes both existing and planned transmission lines"...

Database, 2005, http://www.nerc.com/~esd/Brochure.pdf" "Notes:" "1 Circuit miles of AC lines 230 kV and above." "2 Data includes both existing and planned transmission lines"...

Undersea transmission lines and shoreline AC-DC conversion stations and near-shore transmission lines are being considered as part of a system for transporting energy between the Hawaiian Islands. These facilities will need to be designed so that they wil...

The design and testing of a cryogenic bushing for the termination of a 138 kV 3-phase superconducting power transmission line are discussed. Three combined voltage and current bushings have been tested. Vacuum leaks and refrigerator capacity have limited ...

A device is disclosed for connecting a tuned power transmission line to an ac network includes the following units that are serially interconnected in any combination: a phase transposition unit for phase shifting the voltage through an angle which is a multiple of the natural shift of voltages of opposite phases; a coupling ...

An application of high speed reclosing for UHV a.c transmission lines is expected to secure high reliability of transmission system. In order to choose dead times of high speed reclosing property, it is necessary to clarify forced extinction characteristi...

This review describes the electrical properties of a-c and d-c transmission lines and the resulting effects on plants, animals, and people. Methods used by BPA to mitigate undesirable effects are also discussed. Although much of the information in this review pertains to high-voltage transmission ...

The power quality on the transmission lines is less of a concern with an AC system. At the point of use (power distribution) we will need to use Delta to ...

... (Author). Descriptors : *Ice, *Ice formation, *Electric conductors, *Cold weather tests, Transmission lines, Electric fields, Test equipment, Aluminum ...

The status of ehv construction until 1970 is reviewed. Between 1964 and 1970 there will be 3,230 miles of transmission lines at 500 kV ac and higher constructed.

A detailed study is presented of the economics of conventional underground transmission lines utilizing oil-paper insulated pipe-type cables. Three cryogenic ac transmission lines, cooled, respectively, by nitrogen, hydrogen, and helium, are compared with conventional cables and overhead ...

Considerable incentives exist for utilities to place hvdc transmission lines along the same right of way as ac lines. One consequence of such an application is steady state induction of fundamental frequency voltages into the dc circuit. The resulting current ripple on the dc converter can cause continuous offset ...

The phenomena of induced AC on pipelines sharing common rights-of-way with overhead high-voltage electrical transmission power lines is discussed. Basic concepts and techniques for personnel safety and some pipeline protective measures are reviewed.

Corona effects of UHV class conductor systems have been studied using the Akagi test line and UHV corona cage testing facilities. Main results by the tests are as follows, (1) It was confirmed by the demonstration test using the Akagi test line that the p...

Gas transmission pipelines often share a common corridor with electric power transmission lines. Magnetic-field coupling from the power line can induce ac voltage between the pipeline steel and the earth. With induced ac voltage on the pipeline, conditions that influence ...

We present here results of our study of the 5-m-long AC transmission tine model with 1 kA current capability at 77 K. Primary attention was paid to the current characteristics and AC losses in individual tapes and in the core of the cable. The losses were...

The statistical distribution function of hum noise, which is a 100 or 120Hz pure tone which generates a complex standing wave near AC transmission lines, is derived from the random walk theory. The results are verified by comparing them with data measured on Akagi test line. Furthermore, in order to evaluate the ...

This report provides background information about (1) the electric and magnetic fields (EMFs) of high-voltage transmission lines at typical voltages and line configurations and (2) typical transmission line costs to assist on alternatives in environmental documents. EMF strengths at 0 {+-} 200 ...

The following topics were discussed from the papers: 750 to 1500 kV ac transmission, electric field, overvoltage and lightning protection, air gaps and overhead line insulation, overhead line design, ice and wind loads, and conductors. (DLC)

The following topics were discussed from the papers: 750 to 1500 kV ac transmission, electric field, overvoltage and lightning protection, air gaps and overhead line insulation, overhead line design, ice and wind loads, and conductors. (ERA citation 11:01...

Simple approximate equations were proposed to estimate accurately the maximum electrostatic field value at 1m above the ground level under AC vertical double circuit transmission lines of low-reactance phase arrangement or one circuit energized on double ...

A wide range of power system expansion planning techniques require a very large number of solutions for the real power flows in the line for a given transmission network. The use of complete A-C load flow techniques for solving the exact nonlinear equatio...

The technical and environmental considerations involved in HVDC Converter Terminal design with respect to the Square Butte HVDC Project are reported. Considerations are encountered in HVDC stations which are not generally familiar to the utility engineer involved with AC systems. Design of the transmission line is not covered.

The project proposes construction of additions to BPA's electric transmission system including transmission lines, substations, and related structures; maintenance of existing facilities including repair of equipment, structures, aerial conductors, and ac...

The status of attempts and techniques to reduce audible noise and corona generation and losses in EHV AC overhead power transmission lines in general is reviewed. A number of other promising concepts are identified. The correspondence between available au...

2 33 3 3 1 1 1 1 1 1 2 2 Network of offshore wind farms connected by gas insulated transmission is a GIL? Why GIL? Acknowledgements Network of wind farms Comparison with other transmission systems AC wind farms in one line over the German island Norderney. 3 GIL is an AC ...

HVDC transmission is increasingly used as a supplement to AC transmission. In order to exploit the versatility of HVDC transmission, the demand for and the quality of performance of telecommunication systems becomes more important. To properly apply a telecommunication system, the HVDC system characteristics and ...

and Demand Database, 2005, http://www.nerc.com/~esd/Brochure.pdf Notes: 1 Circuit miles of AC lines 230 kV and above. 2 Data includes both existing and planned transmission lines...

This report strives to define the various environmental effects associated with HVDC lines, discusses the current knowledge of their potential effects on biological and non-biological systems, and compares these effects associated with ac lines where appropriate.

During the last several years, audible noise produced by high voltage transmission lines in corona has emerged as an important design consideration. In this same time frame a number of different methods for calculating audible noise levels have been proposed. The methods currently available, for both ac and dc ...

An hvdc transmission system may be more economic than hvac for overhead lines longer than 400 miles or underground or underwater cable longer than 30 miles. Dc line cost is approximately 75% of an ac line having the same total conductor cross section, the same maximum line ...

We present here results of our study of the 5-m-long AC transmission tine model with 1 kA current capability at 77 K. Primary attention was paid to the current characteristics and AC losses in individual tapes and in the core of the cable. The losses were measured as a function of AC magnetic field amplitude in ...

Charge comparison is a new transmission line protection system. It is a form of current differential relaying. Charge comparison largely resolves the traditional problems of current differential relaying of transmission lines: protection is lost if channel fails, large channel capacity required and precise channel ...

Economic considerations of long distance extra high voltage ac and dc transmission are discussed. Voltages above 500 kV ac are briefly considered. The conclusion reached is that the design layouts performed with due consideration of the progress to be expected in the development of high voltage engineering show the application of dc to ...

References are contained for HVDC systems, converter stations and components, overhead transmission lines, cable transmission, system design and operations, simulation of high voltage direct current systems, high-voltage direct current installations, and ...

The results are presented of a program whose purpose was to investigate new concepts of power transmission structures, considering all electrical and mechanical parameters, in order to minimize their effect on the environment. Information is included on: new structural concepts for power transmission towers; tower size reduction through the use of new ...

.................................................................................................................. 16 6.5 Locating faults on underground cables, paralleled cable circuitsIEEE Std C37.114TM-2004 C37.114TM IEEE Guide for Determining Fault Location on AC Transmission-2004 IEEE Guide for Determining Fault Location on AC ...

This article describes the use of thyristor-based controllers for more efficient and reliable power line performance. The topics of the article include the flexible ac transmission system, linking power systems, limiting parameters for power flow, the static var compensator, the subsynchronous resonance damper, the thyristor-controlled ...

Advantages of dc over ac for submarine cable links more than counter balance the economic factors involved by the need for suitable terminal equipment. When the power transmitted exceeds a certain limit, dc is the only practicable solution. The advantages of dc transmission are more strongly emphasized for insulated cables than for overhead ...

The results are presented of a program devoted to the selection of electrical and mechanical design criteria and parameters for overhead power transmission lines for ac systems rated at from 345 to 1100 kV and for dc systems rated at from 600 to 1200 kV. Information is included on the environmental effects, i.e., audible noise and ...

Contents: Protection of 400 kV A.C. systems; Protection of extra high voltage transmission lines of rating 420 kV; Digital protection and control of power systems; Bus protection for 400 kV substation; PLC systems for teleprotection; Transmission of telep...

Results are presented of the work performed at EPRI's Project UHV from January 1974 to December 1976. During this period, a three-phase ac test line with line voltages up to 1500 kV was constructed and operated. The feasibility of UHV transmission has been demonstrated and the most important problems ...

Various noises produced by corona discharges from high voltage transmission lines are the important considerations in line design. HVAC transmission lines must be designed to satisfy national environmental regulations too. Therefore, it is necessary for line designers to ...

In joint-use corridors where both pipelines and AC electric transmission lines are present, a portion of the energy contained in the electromagnetic field surrounding the electric transmission lines is captured by each pipeline, resulting in induced AC voltages which vary ...

Insulator contamination is the decisive factor in making insulation design of most transmission lines in Japan. The performance of contaminated insulators against a short-time ac overvoltage in the order of several cycles is described, taking into consideration comparatively higher overvoltage due to the one-phase-to-ground fault of ...

To cope with the changing demands of power transmission, the UHV Transmission Development and Promotion Committee was created in 1973 within the Central Electric Power Council (consisting of the nine Japanese electric power companies and the Electric Power Development Company). A research and development program on the next-term power ...

This is a collection of papers presented at the 1994 IEEE PES Transmission and Distribution Conference. The topics of the papers include distribution system voltage sags; switchgear; power systems engineering; extruded dielectric distribution cables and accessories; power system harmonics and compensation schemes on transmission lines; ...

The results of the work performed at EPRI's Project UHV from October 1976 to December 1977 are presented. During this period, a 3-phase ac test line with different bundles and line configurations was energized to obtain design data on audible noise, radio noise, corona loss, and television interference for ...

... these are often due to emissions from electrical power transmission lines. Similar narrow-band electrical noise spikes can occur also in laboratory data reduction due to AC power influences. In comparing t...

In the opinion of EPRI and ERDA this 46 month program to develop an ac super-conducting power transmission line was unsuccessful in meeting most of its specific objectives. The technical and economic problems pursued are outlined. Unforeseen difficulties ...

This study examined certain characteristics of spark discharges from vehicles energized by an electric field. Vehicles were placed in an electric field produced by a 500-kv transmission line. Spark dischargers were delivered through a resistor to a driven...

Measurements of the HF radio noise environment near an HVDC transmission line and converter station were made outside Winnipeg in July 1977. Typical levels and characteristics are presented for various combinations of mercury arc valve noise, ac hum and d...

The development of a suitable polymeric tape for use as insulation on ac superconducting cables is a challenging engineering problem for the designer of plastic films. No commercially available tape simultaneously fulfills all of the electrical, mechanica...

This text is intended for junior/senior-level electricity and magnetism courses. It presents the fundamentals of electromagnetic theory, and explores related applications (ac circuits, antennas, transmission lines, plasmas, optics, etc.). There are numerous examples and problems.

In order to find exactly the permitted difference limits of phase, frequency and magnitude of voltage between both power systems in cases where a separated power system was reparalleled to a trunk transmission line, fundamental experiments were carried ou...

An auto-ranging ac resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an ac excitation signal for application to a load, including the device and the transmission line, a monitoring ...

Improvement of transient stability of a 2-circuit ac transmission link by use of switched series capacitors is analyzed by equal-area diagrams for two kinds of disturbances, i.e., a permanent fault on one ac circuit, cleared by opening a section of that circuit, without reclosure, and a permanent fault on a dc line ...

The audible noise produced by corona discharge from AC overhead transmission line conductors is one of the major factors affecting the design of conductors, particularly for transmission lines with voltages above 500 kV. The audible noise has two components, which are random noise with ...

ehv dc has come into prominence in recent years as a possible economical means of bulk power transmission. Present systems, such as the proposed Pacific Northwest Southwest Intertie, consist of two converter terminals interconnected by a dc transmission line. The source terminal rectifies power from the ac system ...

The authors report single-phase ac loss measurements on 8, 4, and 3-layer, multi-strand, HTS prototype conductors for power transmission lines. They use both calorimetric and electrical techniques. The agreement between the two techniques suggests that the interlayer current distribution in one-meter long conductors are representative ...

For attenuation correction (AC) of 201Tl myocardial perfusion images, an accurate attenuation map is required. This study assessed whether prolonged transmission scanning is required in obese compared to normal-sized patients. Twenty-nine obese patients (mean body mass index 33 kg m-2) underwent sequential emission/transmission imaging ...

Results are presented of experiments aimed at developing advanced, high-capacity, power transmission conductors using superconducting materials derived from Nb/sub 3/Ge. Successful efforts for producing a model superconducting (Nb/sub 3/Sn) joint for use in superconducting lines are described. Realistic theoretical calculations have been completed on the ...

There exists only inconclusive evidence that exposure to electromagetic fields of high voltage transmission lines is detrimental to human health. Nevertheless, public concern is forcing regulatory action. Available literature on the health effects of exposure to electromagnetic fields is reviewed. Several alternative control strategies to reduce human ...

Objective was to develop mutual design methods and criteria for overhead ac transmission lines and adjacent railroad systems. This project has addressed basic engineering issues which govern the operation of railroad communications and signal (C and S) systems under conditions of interference from nearby ...

This study investigated the effects of geomagnetically-induced currents (GIC) on a new 749 km (466 mile) 500 kV ac transmission line from the vicinities of Winnipeg, Manitoba to Duluth, Minnesota to Minneapolis-St. Paul, Minnesota. The period of performan...

Corona noise generated from a DC transmission line is one of the important elements from the standpoint of the measures to maintain a good electrical environment. DC corona noise has the nature different from that of corona noise during AC transmission, f...

The results are presented of a program devoted to the selection of electrical and mechanical design criteria and parameters for overhead power transmission lines for ac systems rated at from 345 to 1100 kV and for dc systems rated at from 600 to 1200 kV. ...

UHV dc transmission is receiving increasing attention as a means of bulk power transmission. From this standpoint, enhancement of UHV dc transmission reliability is important. This problem has not been discussed on a wide basis although the reliability of the ac-dc converter and dc line ...

The Mead-Phoenix 500 kV ac line is 243 miles long and runs parallel to the existing Mead-Liberty 345 kV line. This line is planned for 70% series and 70% shunt compensation; it also incorporates the first application of a 50 kV phase shifting transformer that enables a 1,300 MW transmission ...

The use of compressed gas-insulated equipment in the high voltage transmission network has steadily increased over the recent years. Substations utilizing compressed gas insulation can be placed and used to bring power into urban areas at the full transmission line voltage. Compressed gas-insulated cables have found an increasingly ...

Ontario Hydro shows that pipelines on power-line rights-of-way can play a significant part in the conduction of fault return currents. The voltage hazards near a pipeline are illustrated for power-system faults occurring within power stations and those occurring along the transmission lines. Metal pipelines buried along power ...

This is the first of two scoping studies of the Flexible ac Transmission System (FACTS). It investigates the possibility of using high speed thyristor based control of HVAC power system elements to enhance the carrying capacity of existing transmission circuits without compromising reliability. A study system representative of existing ...

Three power-system options are considered with respect to utilization on a lunar base: the fully centralized option, the fully decentralized option, and a hybrid comprising features of the first two options. Power source, power conditioning, and power transmission are considered separately, and each architecture option is examined with ac and dc ...

Sensors for measuring vertical current density at ground level near high voltage dc (HVDC) transmission lines are subject to error when the sensor is not in the ground plane. The magnitude of this error, for guarded and unguarded sensors, was investigated using both dc electric fields with space charge and ac electric fields in a ...

... (Author). Descriptors : (*WAVEGUIDES, FILMS), (*TRANSMISSION LINES, LIGHT TRANSMISSION), DIELECTRICS, POLARIZATION, INTEGRAL ...

The occurrence of fires under transmission lines is responsible for a great number of line outages in many countries. Based on field investigations and laboratory tests under fire conditions the insulation requirements for lines of several voltage levels have been established. The results obtained and the ...

An analysis is made of system for interconnection of ac and dc transmission lines; effect of shunt capacitor on overlap angle, commutation current, and power factor of hypothetical system are calculated using digital computer. Since uhv dc transmission has been conducted in Sweden since 1954, its advantages over ...

A calorimeter for measuring ac losses in meter-long lengths of HTS superconducting power transmission line cables is described. The calorimeter, which is based on a temperature difference technique, has a precision of 1 mW and measures single, two-phase (coupling), and three-phase losses. The measurements show significant coupling ...

This purpose of this NUREG is to present technical information that should be useful to NRC licensees for understanding and applying line supervision techniques to security communication links. A review of security communication links is followed by detailed discussions of link physical protection and DC/AC static supervision and dynamic supervision ...

The electrical systems of the Central American countries are linked by 230 kV ac weak border interconnections forming two separated subsystems. The first one includes Guatemala and El Salvador, and the other one comprises the systems of Honduras, Nicaragua, Costa Rica, and Panama. As a consequence, unrestricted energy exchanges among all countries are not possible. This ...

This paper describes the application of the transmission-line modeling (TLM) method to the decoupled simulation of d.c. linked power electronic systems. Stiff capacitively or inductively smoothed dc links in power electronic systems can be modeled as two-port transmission-line links using the TLM method. The TLM links enable the circuits connected by the ...

There is a great interest in power line carrier facilities because of their inherent reliability, and because of an increasing demand for transmission of data for protection, control, and optimization of power system operation. Improved isolation of carrier signals to the desired line section may permit increased usage of the limited ...

This paper describes the circuit and component selections, development and equivalent circuit test results on an HVDC circuit breaker for an HVDC transmission line. A puffer type SF/sub 6/ gas interrupter for AC circuit breakers is utilized for interrupting DC current with injection of high-frequency inverse current from a commutating ...

The results of a study of proposed lunar base architectures to identify issues concerning centralized and decentralized power system deployment options are presented. The power system consists of the energy producing system (power plant), the power conditioning components used to convert the generated power into the form desired for transmission, the ...

The Public Service Company of New Mexico proposes to construct and operate a 500 kV alternating current (AC) transmission line in the northwestern portion of New Mexico. The proposed line will extend from the Four Corners Power Plant to Ambrosia Station to a proposed Pajarito Station west of Albuquerque, NM. The ...

The Public Service Company of New Mexico proposes to construct and operate a 500 kV alternating current (ac) transmission line in the northwestern portion of New Mexico. The proposed line will extend from the Four Corners Power Plant to Ambrosia Station to a proposed Pajarito Station west of Albuquerque, NM. The ...

... Title : Analysis of Microstrip Transmission Lines. ... A discussion of the higher-order modes in such transmission lines is also included. ...

The high-voltage direct-current (HVDC) bipolar research facilities, adapted from existing ac testing facilities at Project UHV, that were constructed to study and to provide future design information for overhead dc transmission lines in the +- 600 to +- 1500-kV range are examined. A description of the new power supply equipment and a ...

Project EHV, located in towns of Lenox and Lee, Mass., contains 18 transmission towers involving a variety of materials and design techniques. The project involves design, construction, and operation of a complete prototype ac extra hv transmission line to be operated at 750 kV; various structures, materials, and ...

As a result of a program jointly funded by the Electric Power Research Institute (EPRI) and the Pipeline Research Committee (PRC) of the American Gas Association( A.G.A.), known data have been consolidated and a systematic investigation has been made into...

Progress in research on the breakdown strengths of gaseous dielectrics, on the environmental effects of gaseous dielectrics breakdown products, and on measurements of breakdown voltages of liquid n-hexane are reported. A short discussion of transmission losses in EHV AC gas-insulated and oil-filled cable transmission ...

Superconductors based upon Nb sub 3 Ge have been fabricated by the chemical vapor deposition (CVD) process in long lengths in a configuration suitable for an ac power transmission line. This material exhibits a transition temperature T/sub c/ greater than...

Facilities developed for the electrical and mechanical testing of equipment for EHV AC, EHV DC, and UHV transmission systems and the tests performed in the facilities are described. Hardware for 1200 kV systems have been tested to and in the design of prototype UHV power transmission lines. (LCL)

A delegation from the U.S. attended the first meeting in Moscow in 1974 to negotiate the method of exchanging technical data and to establish areas for joint research. Two symposia were organized to deal with a-c and d-c transmission technology. Joint a-c transmission research was planned on overvoltage protection ...

This handbook is intended for practical use in the location, prevention and correction of television interferences (TVI) from overhead transmission and distribution lines. The theoretical aspects of interference generation are introduced and practices in design, construction and correction which have proven successful in interference suppression are ...

... transmission-line transformers and particularly to transmission-line transformers formed of ... the halves of a 4 to 1 ratio, transmission-line transformer. ...