DD158607A1 - CIRCUIT ARRANGEMENT FOR COMBINED DC-DC POWER SUPPLY AND SIGNAL GENERATORS ON TRANSMISSION CABLES - Google Patents

Abstract

The invention relates to a circuit arrangement for the remote feeding of signal regenerators and simultaneous locking of constantly and briefly occurring longitudinal voltages, which are caused by parallel high-voltage lines, such as e.g. electrified railway lines on which information lines are induced. The aim of the invention is to realize with the help of a conversion DC-DC voltage in the terminal or feeding intermediate point and the regenerator both functions while transmitting on the transmission lines a DC supply voltage to not affect adjacent transmission systems. The object is achieved by transforming a DC voltage present in the feeding point and arriving at the regenerator points via the information transmission lines by means of inverters into square-wave voltages. The square-wave voltages are transferred via transformers with galvanically isolated windings and then rectified again. The resulting DC voltages serve d. Feeding d. each subsequent regenerator sections or d. each local signal regenerators.

Description

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circuitry

for combined DC-AC feeding of signal regenerators on transmission lines

Field of application of the invention

The invention relates to a circuit arrangement for the remote supply of signal regenerators on transmission lines, especially for the closure of constantly and briefly occurring longitudinal stresses caused by. Parallel guidance, approximations or intersections of high voltage lines of the Landesnetaes, of electrified railroad tracks and industrial power supply systems are induced on the information transmission lines, as well as operating on line systems, which are parallel to the remote feed circuit transmission systems that are disturbed by a pure AC remote power supply unacceptably high by crosstalk.

Characteristic of the known technical solutions

Known are a number of pure AC remote feeds or DC remote feeds, These solutions adhere to the special type of supply typical defects, such as z. B. galvanic switching and thus no Abschließungsfähigkeit against constantly and briefly

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occurring longitudinal voltages due to high voltage interference with DC fine feed. A pure AC remote feed in turn has the disadvantage that the remote feed circuit adjacent systems on the. Transmission means by crosstalk in the form of humming.

aim the invention

The aim of the invention is to provide a remote feed variant for signal regenerators, dia is lockable against induced by high voltage systems longitudinal voltages. Furthermore, an interference of adjacent transmission systems in the form of crosstalk is to be avoided by the Fernspeisekreis.

Explanation of the essence of the invention

Lan invention is the object underlying θ, for the power supply of signal regenerators on transmission lines to specify a Fernspeisevariante, on the one hand is able to lock against constantly and briefly occurring longitudinal voltages and on the other hand does not interfere with adjacent systems by crosstalk transmission systems on the transmission line.

The object is achieved by according to the invention in the feeding point, which may be a terminal or feeding intermediate point, an existing DC voltage is converted by means of an inverter into a square wave voltage. The square-wave voltage is transmitted via a transformer with two galvanically isolated windings. Dia secondary winding feeds a rectifier bridge circuit. The ent standing DC voltage is then smoothed with a sieve member

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and transferred via the information lines to the subsequent Regeneratorpunkt "An essential feature of the invention is that in the local Regeneratorpunkt from the incoming JFernspisegleichspannung with the help of an inverter again a square-wave voltage is generated, which feeds the primary winding of a transformer having a total of three galvanically isolated windings ,

The one secondary winding serves as a transit winding and is connected to a rectifier bridge circuit as well as a sieve member. The resulting DC output voltage is transmitted via the information lines to the next regenerator point and further processed there in the same way. The induced in the second secondary winding square wave voltage is also converted by a rectifier bridge circuit and a filter element into a DC voltage, dia dar feed the signal regenerators of the local Reganeratorpunktes diant.

The invention will be explained in more detail with reference to a drawing.

In Figure 1, the circuit arrangement according to the invention is shown. , ,

In a terminal 1 or dining intermediate station 1, the existing DC voltage of a trunk battery is converted into a square wave voltage and into the primary winding 4 of a transformer 3) consists of two galvanically isolated windings 4, 5, .in the fed Secondary winding 5 induced square-wave voltage is detected in the

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switched rectifier bridge circuit 6 and a Siebglied 7 again converted into a DC voltage, which is transmitted via the Informationsübertragungsieitungen 8 and 9 to the subsequent Regeneratorpunkt '10, is. There, with the help of another inverter 2 ^f, the remote feed DC voltage is converted into a square wave voltage and fed into the primary winding 12 of a transformer 11, which consists of three galvanically isolated windings 12, and 14. The in the secondary winding 13 j which acts as a transit winding, induced rectangular, voltage is in the downstream Gleichrichterbrükkenschaltung 6 'and a sieve member 7' again converted into a DC voltage via the information transfer it it ung β η 8 ^f and 9 ^! is transmitted to the next regenerator point.

The induced in the secondary winding 14 square-wave voltage is in downstream rectifier bridge circuit 6 * ^T and a. Sieve member 7 ¹ 'also unigeformed in a DC voltage, which serves the power of the local signal regenerators 15. The galvanic separation of the remote feed sections 16, 16 'and thus the AbriegeluBg of induced on the information transmission lines 8j 9j 8 ^f , 9' short-term or continuous longitudinal voltages thus carried by the transformers 3 and 11. An influence on the adjacent transmission systems is not possible because of the information transmission lines 8, 9, 8 ¹ , 9 ^{1 is} a DC voltage as a remote supply voltage.

Claims (1)

229908 invention claim Scb.altungsanord.nung for combined Gleich.strom-Weoh.selstromfeinspeisung of signal regenerators on transmission lines over which the remote supply current flows, the back and forth of the Iüformationsübertragungsleitung in each! Fernspeiseabschnitt forms a feed loop, gekennzeich.net ., That the terminal (1) or feeding intermediate point (1) contains an inverter (2), the input side with an existing DC voltage source and output side rn.it the primary winding (4) of a transformer (3) , the two galvanically isolated windings (A-, 5) has, is connected, as well as an equal erbrückensehaltung (6), which is connected on the AC side with the secondary winding (5) of the transformer (3) and on the DC side with a sieve member (7), wherein the Aμsgang the sieve member (7) on Beginning or end of the information transmission lines (8, 9) and the subsequent Pernspeiseabschnitt (16) feeds, and that the subsequent Regeneratorpunkt (10) has a further inverter (2), the input side to the end or »beginning of the information transmission lines (8, 9) and the output side with the primary winding (12) of a transformer (11), the three galvanic separate windings (12, 13? 14 ·), is connected, and a further -e- 229908 3 re rectifier bridge circuit (6 ') i on the AC side with the secondary winding (13) of the transformer (11), which serves as a transit winding, and on the DC side with a sieve member (7) is beschältet, wherein the output of the Siebgliedes on arrival. ... fang or end of the information transmission lines (8 ¹ , 9 ') in the regenerator (10) and the subsequent remote feed section (16 ¹ ) feeds, and another rectifier bridge circuit (6 ^tf ) j <ϋβ on the AC side with the secondary winding ( 14) and on the DC side with a. Siebglied (7 ^{! 1} ) is connected, wherein the output of the Siebgliedes the local regenerators (15) feeds. Hisrzij 1 See drawings