SVQC capacitance and impedance regulating switch switching position inspection device and inspection method

Abstract

A SVQC capacitance and impedance regulating switch switching position inspection device and inspection method, comprising a box, a power switch, a battery compartment, five three-core test cables, a first group of capacitor switching indicator lights and a second group of capacitor switching indicator lights are arranged on the box, wherein one end of the first three-core test cable, the second three-core test cable and the third three-core test cable are connected to the positive power terminal of the battery compartment, the other ends of the first three-core test cable, the second three-core test cable and the third three-core test cable are the inspection input end of the device, one end of the fourth three-core test cable and the fifth three-core test cable are connected to the negative end of the battery compartment through the first group of capacitor switching indicator lights and the second group of capacitor switching indicator lights respectively, and the other ends of the fourth three-core test cable and the fifth three-core test cable are the inspection output end of the device. The circuit structure of the present invention is simple, the operation is convenient, and the problems of the capacitor being unable to be put into operation or the protection device being misoperated or refused to operate are avoided.

Description

Technical Field

[0001] The invention relates to a switch switching position inspection device for a power system, and in particular to a SVQC capacity and reactance regulating switch switching position inspection device and inspection method. Background Art

[0002] SVQC substation reactive power compensation and voltage optimization complete set has been widely used in power systems in recent years due to its flexible operation mode and small footprint. The capacity and impedance adjustment switch is one of its key components. Through the capacity and impedance adjustment switch, an adjustable reactor can be combined with multiple groups of capacitors to achieve simultaneous capacity and impedance adjustment.

[0003] If the switching function of the capacitance and impedance regulating switch is abnormal or does not correspond to the position displayed by the control device, the capacitor will not be put into operation or the protection device will malfunction or refuse to operate. Using ordinary meters for inspection is prone to misjudgment and extremely low efficiency due to the large number of wiring terminals and small operating space. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a device and method for testing the switching position of a SVQC capacitor and reactance regulating switch.

[0005] The technical solution of the present invention is:

[0006] A device for inspecting the switching position of a SVQC capacitor and resistor regulating switch comprises a box body, on which a power switch, a battery compartment, five three-core test cables, a first group of capacitor switching indicator lights and a second group of capacitor switching indicator lights are arranged, wherein one end of the first three-core test cable, the second three-core test cable and the third three-core test cable are connected to the positive power terminal of the battery compartment, the other ends of the first three-core test cable, the second three-core test cable and the third three-core test cable are inspection input terminals of the device, one end of the fourth three-core test cable and the fifth three-core test cable are connected to the negative terminal of the battery compartment through the first group of capacitor switching indicator lights and the second group of capacitor switching indicator lights respectively, and the other ends of the fourth three-core test cable and the fifth three-core test cable are inspection output terminals of the device.

[0007] Furthermore, plug-in head 1 and plug-in head 2 are also arranged on the surface of the box body. The first three-core test cable, the second three-core test cable and the third three-core test cable are connected to the positive power terminal of the battery compartment through the plug-in head, and the fourth three-core test cable and the fifth three-core test cable are connected to the negative power terminal of the battery compartment through the plug-in head 2 respectively.

[0008] The SVQC capacitance and impedance regulating switch switching position inspection method using the SVQC capacitance and impedance regulating switch switching position inspection device has the following steps:

[0009] 1. Connect the test input end of the device to the first group of terminal input ends of the SVQC capacitance and impedance regulating switch ~ the third group of terminal input ends of the SVQC capacitance and impedance regulating switch, connect the test output end corresponding to the fourth three-core test cable to the first group of terminal output ends of the SVQC capacitance and impedance regulating switch, connect the test output end corresponding to the fifth three-core test cable to the second group of terminal output ends of the SVQC capacitance and impedance regulating switch and the third group of terminal output ends of the SVQC capacitance and impedance regulating switch, and turn on the power switch;

[0010] 2. Adjust the SVQC capacity and impedance adjustment switch to the "1" position on the SVQC type substation reactive power compensation and voltage optimization complete set. At this time, the correct corresponding positions of the three-phase switches in the SVQC capacity and impedance adjustment switch should be: switch K1 closed, switch K2 open, switch K3 open, switch K4 closed, switch K5 open, switch K6 open, and the three-phase switching indicator lights of the first group of capacitors are lit; if the three-phase switching indicator lights of the second group of capacitors are lit or the three-phase switching indicator lights of the first and second groups of capacitors are lit, the actual switching position of the SVQC capacity and impedance adjustment switch does not correspond to the display of the SVQC type substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted;

[0011] 3. Adjust the SVQC capacity and impedance regulating switch on the SVQC substation reactive power compensation and voltage optimization complete set to the "2" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is closed, switch K3 is open, switch K4 is open, switch K5 is closed, switch K6 is open, and the three-phase switching indicator lights of the second group of capacitors are lit; if the three-phase switching indicator lights of the first group of capacitors are lit or the three-phase switching indicator lights of the first and second groups of capacitors are lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted.

[0012] 4. Adjust the SVQC capacity and impedance regulating switch on the SVQC reactive power compensation and voltage optimization complete set to the "3" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is open, switch K3 is closed, switch K4 is closed, switch K5 is open, and switch K6 is closed. The three-phase switching indicator lights of the first and second groups of capacitors are lit; if the switching indicator light of a certain group of capacitors is not lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC type substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted.

[0013] The beneficial effects of the present invention are: the circuit structure is simple and the operation is convenient. After the debugging or maintenance of the SVQC type substation reactive power compensation and voltage optimization complete set is completed and before power is supplied, the switching position of the capacitance and resistance regulating switch can be conveniently checked to ensure that its actual position is consistent with the control display device, thereby avoiding the problems of the capacitor being unable to be put into operation or the protection device malfunctioning or refusing to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 is a circuit wiring diagram of the present invention;

[0016] Figure 3 This is the schematic diagram of the SVQC capacitance and impedance regulating switch switching position "1";

[0017] Figure 4 This is the schematic diagram of the SVQC capacitance and impedance regulating switch switching position "2";

[0018] Figure 5 This is a schematic diagram of the SVQC capacitor and reactor regulating switch switching position "3". DETAILED DESCRIPTION

[0019] like Figure 1 and Figure 2 As shown, a SVQC capacitance and impedance regulating switch switching position inspection device comprises a box body 1, on which a battery compartment 2, a power switch 3, five three-core test cables 4, a plug-in head 1 5, a first group of capacitor switching indicator lights 6, a second group of capacitor switching indicator lights 7 and a plug-in head 2 8 are arranged, the five three-core test cables 4 are respectively a first three-core test cable 401 to a fifth three-core test cable 405, one end of the first three-core test cable 401, the second three-core test cable 402 and the third three-core test cable 403 are connected to the positive end of the power supply of the battery compartment 3 through the plug-in head 1 5, and the first The other ends of the first three-core test cable 401, the second three-core test cable 402 and the third three-core test cable 403 are the inspection input ends of the device, one end of the fourth three-core test cable 404 and the fifth three-core test cable 405 are connected to the first group of capacitor switching indicator lights 6 and the second group of capacitor switching indicator lights 7 through the plug-in head 8 respectively, the other ends of the first group of capacitor switching indicator lights 6 and the second group of capacitor switching indicator lights 7 are connected to the negative power supply terminal of the battery compartment 3, and the other ends of the fourth three-core test cable 404 and the fifth three-core test cable 405 are the inspection output ends of the device.

[0020] The SVQC capacitance and impedance regulating switch switching position inspection method using the SVQC capacitance and impedance regulating switch switching position inspection device has the following steps:

[0021] 1. If Figure 2 As shown, the detection input end of the device corresponding to the first three-core test cable 401 to the third three-core test cable 403 is respectively connected to the first group of terminal input ends X1A, X1B and X1C, the second group of terminal input ends X2A, X2B and X2C, and the third group of terminal input ends X3A, X3B and X3C of the SVQC capacitance and impedance regulating switch, the detection output end of the device corresponding to the fourth three-core test cable 404 is connected to the first group of terminal output ends C1A, C1B and C1C of the SVQC capacitance and impedance regulating switch, the detection output end of the device corresponding to the fifth three-core test cable 405 is connected to the second group of terminal output ends C2A, C2B and C2C of the SVQC capacitance and impedance regulating switch, and the power switch 3 is turned on;

[0022] 2. If Figure 3 As shown ( Figure 3 X1, X2 and X3 are the switch input terminals, C1 and C2 are the switch output terminals), adjust the SVQC capacity and impedance regulating switch to the "1" position on the SVQC type substation reactive power compensation and voltage optimization complete set. At this time, the correct corresponding positions of the three-phase switches in the SVQC capacity and impedance regulating switch should be: switch K1 closed, switch K2 open, switch K3 open, switch K4 closed, switch K5 open, switch K6 open, and the first group of capacitor switching indicator lights 6 are lit in three phases; if the second group of capacitor switching indicator lights 7 are lit in three phases or the first and second groups of capacitor switching indicator lights are lit in three phases, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC type substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted;

[0023] 3. If Figure 4 As shown, on the SVQC substation reactive power compensation and voltage optimization complete set, the SVQC capacity and impedance regulating switch is adjusted to the "2" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is closed, switch K3 is open, switch K4 is open, switch K5 is closed, switch K6 is open, and the three-phase switching indicator light 7 of the second group of capacitors is lit; if the three-phase switching indicator light 6 of the first group of capacitors is lit or the three-phase switching indicator lights of the first and second groups of capacitors are lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted.

[0024] 4. If Figure 5As shown, on the SVQC substation reactive power compensation and voltage optimization complete set, the SVQC capacity and impedance regulating switch is adjusted to the "3" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is open, switch K3 is closed, switch K4 is closed, switch K5 is open, and switch K6 is closed. The three-phase switching indicator lights 6 and 7 of the first and second groups of capacitors are lit. If the switching indicator light of a certain group of capacitors is not lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted.

[0025] The above are only specific embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A SVQC capacitance and impedance regulating switch switching position inspection device, comprising a box, characterized in that: A power switch, a battery compartment, five three-core test cables, a first group of capacitor switching indicator lights and a second group of capacitor switching indicator lights are arranged on the box body, wherein one end of the first three-core test cable, the second three-core test cable and the third three-core test cable is connected to the positive end of the power supply of the battery compartment, the other end of the first three-core test cable, the second three-core test cable and the third three-core test cable is the inspection input end of the device, one end of the fourth three-core test cable and the fifth three-core test cable is connected to the negative end of the battery compartment through the first group of capacitor switching indicator lights and the second group of capacitor switching indicator lights respectively, and the other end of the fourth three-core test cable and the fifth three-core test cable is the inspection output end of the device; During operation, connect the test input end of the device to the first group of terminal input ends of the SVQC capacitance and impedance regulating switch ~ the third group of terminal input ends of the SVQC capacitance and impedance regulating switch, connect the test output end corresponding to the fourth three-core test cable to the first group of terminal output ends of the SVQC capacitance and impedance regulating switch, connect the test output end corresponding to the fifth three-core test cable to the second group of terminal output ends of the SVQC capacitance and impedance regulating switch and the third group of terminal output ends of the SVQC capacitance and impedance regulating switch, and turn on the power switch; On the SVQC substation reactive power compensation and voltage optimization complete set, adjust the SVQC capacity and impedance regulating switch to the "1" position. At this time, the correct corresponding positions of the three-phase switches in the SVQC capacity and impedance regulating switch should be: switch K1 closed, switch K2 open, switch K3 open, switch K4 closed, switch K5 open, switch K6 open, and the three-phase switching indicator lights of the first group of capacitors are lit; if the three-phase switching indicator lights of the second group of capacitors are lit or the three-phase switching indicator lights of the first and second groups of capacitors are lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted; On the SVQC substation reactive power compensation and voltage optimization complete set, adjust the SVQC capacity and impedance regulating switch to the "2" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is closed, switch K3 is open, switch K4 is open, switch K5 is closed, switch K6 is open, and the three-phase switching indicator lights of the second group of capacitors are lit; if the three-phase switching indicator lights of the first group of capacitors are lit or the three-phase switching indicator lights of the first and second groups of capacitors are lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted; On the SVQC reactive power compensation and voltage optimization complete set, adjust the SVQC capacity and impedance regulating switch to the "3" position. At this time, the correct corresponding positions of the three-phase switches should be: switch K1 is open, switch K2 is open, switch K3 is closed, switch K4 is closed, switch K5 is open, and switch K6 is closed. The three-phase switching indicator lights of the first and second groups of capacitors are lit; if the switching indicator light of a certain group of capacitors is not lit, the actual switching position of the SVQC capacity and impedance regulating switch does not correspond to the display of the SVQC type substation reactive power compensation and voltage optimization complete set, and needs to be checked and adjusted.

2. According to the SVQC capacitance and resistance regulating switch switching position inspection device described in claim 1, it is characterized in that: a plug-in head 1 and a plug-in head 2 are also arranged on the surface of the box body, and the first three-core test cable, the second three-core test cable and the third three-core test cable are connected to the positive power terminal of the battery compartment through the plug-in head, and the fourth three-core test cable and the fifth three-core test cable are connected to the negative power terminal of the battery compartment through the plug-in head 2 respectively.

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