RU2586404C1 - Apparatus for monitoring state of wires - Google Patents

Abstract

FIELD: control-measuring equipment.

SUBSTANCE: invention relates to instrumentation, particularly, to devices intended for control of electric energy quality. Summary: transmitting linear subassemblies are equipped with voltage comparison unit transmitting linear subassemblies. This unit is connected to modems assembly of linear subassembly. Linear voltage comparison unit inputs are connected to power supply unit output subassembly of linear subassembly and output of voltage measurement of linear subassembly.

EFFECT: summary: high efficiency of monitoring state of wires due to use of additional diagnostic feature, phase difference of supply voltages in adjacent points of connection.

1 cl, 1 dwg

Description

The invention relates to instrumentation, in particular to devices designed to monitor the condition of the wires of the power line of railway automation devices - VL signaling.

The following device is known for monitoring the state of wires - a device for monitoring the state of a contact wire (RF patent for the invention No. 2222858 authors B. Mekhanoshin and V. Shkaptsov), comprising a control unit, a unit for receiving and converting wire status signals, a preliminary processing unit for the received information , accumulation and storage of data, a communication and data transmission unit, while the preliminary processing of the received information, data storage and storage unit is connected to the input of the communication and data transmission unit and to the output of the unit through radiation and conversion of the state signals of the wire, and the means of interfacing with the channel of public cellular telephony is introduced into the communication and data transmission unit. This device is only capable of monitoring the state of a single-phase power line.

A device for monitoring the condition of wires is also known (Kuznetsov G.V., Michel V.A. Remote diagnostics of wire breaks // Development and research of automated control and management tools for railway enterprises. Edited by V.N. Omsk, 1990. S. 83-86), designed to operate in single-phase and three-phase networks, containing a substation half-set, consisting of an identification unit, an alarm receiver, an alarm unit and a power supply unit of a substation half-set and transmitting linear half-sets, consisting of a block of electromagnetic field sensors, a threshold element, an alarm transmitter, an isolation block, and a linear half-power supply unit. This device has the following disadvantages:

- it is not possible to determine the phase at which the wire was damaged;

- uses the controlled wires themselves as a damage data transmission channel, which, if they are broken, can disrupt its operation.

Closest to the proposed device is a device for monitoring the condition of the wires (RF patent for utility model No. 94349 authors Lunev S.Α., Sokolov M.M.), which contains a substation half-set, consisting of a central processor, a modem block of a substation half-set, a unit for measuring substation voltages half-set, signaling unit and power supply unit of the substation half-set and transmitting linear half-sets, consisting of a voltage measuring unit of a linear half-set, a modem block of a linear half-set mplekta and the power supply line half-sets.

The disadvantage of this device is that it can give a large error in determining the place of damage with a certain scheme of connecting loads to the power line (M. Sokolov. Monitoring the technical condition of the power line of railway automation devices [text] / M. M. Sokolov // Scientific -Technical magazine "Izvestia Transsib", Omsk, 2012 No. 3 (11). P. 88-95).

The aim of the invention is to increase the efficiency of monitoring the condition of the wires.

This goal is achieved by the fact that in the device for monitoring the condition of the wires containing a substation half-set, consisting of a central processor, a modem block of a substation half-set, a voltage measuring unit of a substation half-set, an alarm unit and a power supply unit of a substation half-set and transmitting linear half-sets consisting of a linear voltage measuring unit a half-set, a modem block of a linear half-set and a power supply unit of a linear half-set, and do the outputs of the power supply a half-set is connected to the inputs of the linear half-set modem block and a linear half-voltage measurement block, the output of which is also connected to the input of the linear half-modem block, the modem blocks of all linear half-sets are connected in series, and the modem block of one linear half-set is connected to the modem block of the substation half-set, the outputs of the block modems of the substation half-set and the voltage measuring unit of the substation half-set are connected to the input of the central the processor, the output of which is connected to the input of the signaling unit, and the outputs of the power supply substation half-set are connected to the inputs of the central processor, the modem unit of the substation half-set, the voltage measuring unit of the substation half-set and the signaling unit, is additionally equipped in the transmitting linear half-sets with a voltage comparison unit for the linear half-set, this the block is connected to the modem block of the linear half-set, and the inputs of the voltage comparison block of the linear half-set are connected are not available with the output of the linear half-power supply unit and the output of the linear half-voltage voltage measurement unit.

In FIG. 1 shows a block diagram of the proposed device.

The device operates as follows.

The power supply of the high voltage signaling line is provided from one of the traction substations that limit the section of the railway. Sub-station half-set II is located at the traction substation, which is not used to supply the controlled section of the high voltage signaling system, and the linear half-sets I are located at consumers connected to the high-voltage signaling system, in particular, in automatic lock cabinets.

The voltage measuring unit of the substation half-set 7 is connected to the overhead line at the traction substation and measures the values of the linear voltages at the end of the line. The measured values are sent to the central processor 5. In the event that the values of the line voltages go beyond their normal values, a conclusion is made about the appearance of damage in the overhead signal line. By combining the line voltage values, the central processor determines the phase with the damaged wire.

At the same time, at each consumer, the voltage measuring block of the linear half-set 1 is measured by the voltage supplying the consumer for power, and block 1a compares the voltages coming from the voltage measuring unit of this linear half-set 1 and the voltage measuring unit of the neighboring linear half-set (transmitted via modems of the linear half-sets 2). As a result of comparing the supply voltages, the voltage comparison unit of the linear half-set generates a result on the phase difference. Information about the measured voltages and the phase difference of the supply voltages from each linear half-set is transmitted through a chain of series-connected blocks of modems of the linear half-set 2 through two cable conductors, for example, the self-blocking cable, to the modem block of the substation half-set 4 and then to the central processor 5. The central processor according to the obtained values determines the section of the overhead line of the signaling system, on which the damage occurred, and transmits this information to the alarm unit 6, which can affect the inclusion of emergency th alarm.

In the process, the power supply unit of the linear half-set 3 supplies power to the voltage measuring unit of the linear half-set 1, the voltage comparison unit of the linear half-set 1a and the modem unit of the linear half-set 2, and the power supply unit of the substation half-set 8 feeds the modem unit of the substation half-set 4, the central processor 5, the voltage measuring unit substation half-set 7 and alarm unit 6.

The use of a voltage comparison unit will allow you to get an additional diagnostic feature - the phase difference of the supply voltage at neighboring connection points.

Using the proposed device can improve the efficiency of monitoring the state of the wires through the use of an additional diagnostic feature - the phase difference of the supply voltage at neighboring connection points.

Claims (1)

A wire condition monitoring device comprising a substation half-set consisting of a central processor, a substation half-set modem unit, a substation half-set voltage measuring unit, an alarm unit and a substation half-set power supply unit, and transmitting linear half-sets, consisting of a linear half-set voltage measuring unit, a linear half-set modem unit, and power supply unit of the linear half-set, and the outputs of the power supply of the linear half-set are connected to the strokes of the linear half-set modem block and the linear half-voltage measurement unit, the output of which is also connected to the input of the linear half-modem block, the modem blocks of all linear half-sets are connected in series, and the modem block of one linear half-set is connected to the substation half-modem block, the outputs of the substation half-modem block and the outputs of the substation half-set the voltage measuring unit of the substation half-set is connected to the input of the central processor, the output of which is connected to the input of the alarm unit, and the outputs of the power supply unit of the substation half-set are connected to the inputs of the central processor, the modem unit of the substation half-set, the voltage measurement unit of the substation half-set and the alarm unit, characterized in that the transmitting linear half-sets are additionally equipped with a voltage comparison unit of the linear half-set, and this block is connected to block of modems of the linear half-set, and the inputs of the block for comparing the voltage of the linear half-set are connected to the output of the block Single linear half-sets the power measuring unit and the output voltage of the linear half-sets.

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