RU2624402C2 - System of monitoring lightning strike to overhead power lines - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: system of monitoring the lightning strike on the overhead power lines, including at least two recorders of lightning overstrains, installed at both ends of the monitored line. Each of the registers is provided with a time signal receiver and is configured to fix the current time and recording digitizing the output signal corresponding sensor. Each recorder is connected to the first input of the first encoder lightning overvoltages, characterized in that the recorder comprises at least one second and subsequent inputs are connected to the second and subsequent lightning surges sensors connected to respective overhead lines. The sensors of the lightning overstrains can be carried out in the form of current transformers in the filter circuits connect connection HF communications technology to the decoupling capacitor. The system may further comprise the means of digital processing of information, associated with informational channel recorders. The invention can be successfully used in the production of event monitoring systems, including lightning strikes on overhead power lines.

EFFECT: improved weight and size characteristics, achieved by combining the functionality of multiple devices in one without any loss of functionality, increase reliability of the system achieved by reducing the number of elements, such as registers, each of which has a non-zero probability of failure, required to control multiple objects, improving transmission reliability information by reducing the number of information channels with the registrars.

3 cl, 1 dwg

Description

The invention relates to the electric power industry and can be used to quickly obtain information about thunderstorm conditions and the intensity of thunderstorm activity on the routes of high-voltage overhead power lines (VL).

The well-known “MICROPROCESSOR AUTO LOCKING SYSTEM WITH DECENTRALIZED PLACEMENT OF EQUIPMENT AND A SPECIALIZED DATA TRANSMISSION NETWORK”, RU PM 40284 [1], which includes a first station computer, a second station transmitter and receiver transceiver, a second station receiver and receiver transceiver the network is assigned a network address, information is transmitted over the network in the form of requests from a station transceiver and messages from transceivers of points, the first station transceiver transmits transmission requests over the network, sequentially sorting the addresses of all components of the specialized network, the second station transceiver is connected to the first station transceiver, transmits data over the network to the first station transceiver, the first and second station transceivers receive messages from transceivers over the network signal points on the stage and transmit them respectively to the first and second station computers, in the transceiver s There are two channels of the channel, one of the channels is the main one, the second one works in hot standby, the first and second channels of the transceiver are connected to the modem, through which messages are received and transmitted over a specialized network.

The disadvantage of the system is the lack of an accurate time reference in the system, which does not allow recording the exact place of events, for example, a lightning strike.

Closest to the claimed technical solution is the "DEVICE FOR MONITORING THUNDER-SPEED VOLTAGE ON THE HIGH-VOLTAGE ELECTRIC TRANSMISSION ROUTE", RU ПМ 137392 [2], including at least one pair of lightning surge detectors, installed with two voltage overhead voltage detectors, installed with a voltage overhead time and is configured to fix the values of the current time and record with digitizing the output signal of the corresponding sensor, each register Torr first input connected to the first sensor lightning surges.

The known design has a time reference of the recorded events, which allows you to accurately determine the location of the event, for example, a lightning strike.

A disadvantage of the known design is the deteriorated weight and size characteristics, reduced system reliability and reduced reliability of information transfer.

The technical result of the invention is to improve overall dimensions, increase the reliability of the system, increase the reliability of information transfer.

The technical result is achieved by the fact that the monitoring system of lightning discharges on overhead power lines, including at least two lightning surge detectors installed at both ends of the monitored line, each of the recorders is equipped with an accurate time signal receiver and is configured to record the current time and record with conversion to digital form of the output signal of the corresponding sensor, each recorder is connected by the first input to the first lightning surge sensor, ha It is characterized by the fact that at least one recorder contains the second and subsequent inputs connected to the second and subsequent lightning surge sensors connected to the corresponding overhead lines.

Lightning overvoltage sensors can be made in the form of current transformers in the connection circuits of the filters for connecting the technological RF coupling to the isolation capacitors. The indicated option for connecting sensors will allow not to change the power part of the substation, which will positively affect the cost and duration of the installation of the system.

The system may further comprise digital processing means associated with the information channels with the registrars. The digital processing tool will allow you to process data from several registrars, which will clarify the characteristics of the events.

The drawing shows a fragment of an example of a functional diagram of the system, where:

1 - first substation;

2 - the first registrar;

3 - the first controlled line;

4 - the first sensor;

5 - the first input of the first registrar;

6 - second controlled line;

7 - the second sensor;

8 - the second input of the first registrar;

9 - third controlled line;

10 - the third sensor;

11 - the third input of the first registrar;

12 - second substation;

13 - the second registrar;

14 - the first controlled line;

15 - the first sensor;

16 - the first input of the second registrar;

17 - the second controlled line;

18 - second sensor;

19 - the second input of the second registrar;

20 - third controlled line;

21 - the third sensor;

22 - the third input of the second registrar.

The system operates as follows. The first monitored high-voltage line (hereinafter referred to as the line) 3, the second monitored line 6, the third monitored line 9 are connected to the first substation 1, the corresponding sensors 4, 7, 10 connected to the corresponding inputs are connected to the monitored lines 3, 6, 9 (monitoring objects) 5, 8, 11 of the first registrar 2. The first monitored line 14, the second monitored line 17, the third monitored line 20 are connected to the second substation 12. The corresponding sensors 15, 18, 21 are connected to the monitored lines 14, 17, 20 (objects of control), united with the corresponding inputs 16, 19, 22 of the second registrar 13.

The number of monitored lines can be arbitrary, but more than one line must be connected to at least one substation. Information channels and digital processing tools are known and are not shown in the diagram.

The technical result - the improvement of overall dimensions - is achieved by combining the functionality of several devices in one without loss of functionality.

The technical result - improving the reliability of the system - is achieved by reducing the number of elements, in particular registrars, each of which has a non-zero probability of failure required to control several objects (VL).

The technical result - improving the reliability of information transfer - is achieved by reducing the number of information channels (communication lines) with registrars.

Industrial application. The invention can be successfully applied in the production of event monitoring systems, including lightning discharges on overhead power lines.

Claims (3)

1. A monitoring system for lightning discharges on overhead power lines, including at least one pair of lightning surge detectors installed at both ends of the monitored line, each of the recorders is equipped with an accurate time signal receiver and is capable of recording the current time and recording it with digital conversion of the output the signal of the corresponding sensor, each recorder is connected by the first input to the first lightning surge sensor, characterized in that at least one the histrator contains the second and subsequent inputs connected to the second and subsequent lightning surge sensors connected to the corresponding overhead lines. 2. The system according to claim 1, characterized in that the lightning overvoltage sensors are made in the form of current transformers in the connection circuits of the filters for connecting the technological RF coupling to the isolation capacitors. 3. The system according to claim 1, characterized in that it further comprises a digital processing tool associated with information channels with the registrars.

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