Multi-way intelligent online leakage protector power-on testing device
A test device and intelligent technology, applied in the direction of measuring device, measuring electricity, measuring only current, etc., can solve the problems of low-voltage users losing power, reducing the reliability of power supply, difficulty in the tester, etc., achieving reasonable structure, simple wiring, improved The effect of power supply reliability and leakage integrity
Active Publication Date: 2014-10-15
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0003] Due to the need for regular testing and trial trips in the operation and management of leakage protection, low-voltage users will lose power during the operation process, reducing the reliability of power supply and increasing the frequent tripping that customers think
[0004] At present, rural comprehensive substations are basically divided into multiple outgoing lines, basically 3 to 5 outgoing lines, and each outgoing line is equipped with leakage protection, and a set of leakage protection must be installed for each line of the tester, and the number of wiring increases, especially for power distribution. There is very little free space in the case, and it is difficult to install testers in each set
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[0012] A multi-channel intelligent online leakage protection and non-stop power testing device, including an intelligent online leakage protection and non-power failure controller, which is connected to multiple groups of test circuits and corresponding groups of relays (2 relays in each group) ; The intelligent online leakage protection non-stop power controller includes a first current sensor LJ1 connected between the contacts of the contactor JCQ and the leakage protection device LBQ, and one end of the second current sensor LJ2 is connected to the contactor JCQ and the first current sensor Between LJ1, the other end of the second current sensor LJ2 LJ2 is connected to the contact of the first relay k1, and the contact of the first relay k1 is connected to the phase line L1; one end of a leakage current resistor R is connected to the neutral line N, and the other end is connected to the neutral line N. The contacts of the second relay K2 are connected, and the contacts of th...
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The invention discloses a multi-way intelligent online leakage protector power-on testing device which comprises an intelligent online leakage protector power-on controller connected with multiple groups of testing loops and multiple groups of corresponding relays. The testing device is reasonable in structure, simple in wire connection and capable of conducting testing and trial tripping on a leakage protector under the condition that power for customers is not off. The power supply reliability and leakage protector completeness are improved. The multiple ways can be tested independently.
Description
technical field [0001] The invention relates to a multi-channel intelligent online leak protection non-power-off testing device. Background technique [0002] The National Energy Administration's Rural Power Grid Residual Current Action Protector (referred to as leakage protection) installation and operation regulations, rural low-voltage power grid hierarchical installation leakage protection is one of the effective measures to ensure the safe operation of low-voltage power grids, reduce or prevent personal electric shock casualties, rural areas The general protection of the public transformer station area should be installed by the power supply company on the bus of the transformer station area or on each overhead lead-out line. The leakage protection should adopt the electromechanical integrated three-phase four-wire protector and the combined protector that meets the regulations. . Leakage protection operation management requires that the action characteristics be teste...
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IPC IPC(8): G01R19/00G01R31/02
CPCG01R19/00G01R19/0092G01R31/00G01R31/3277G01R31/50
Inventor 蔡其芬孙德斌陶慧岩郁宏明
Owner STATE GRID CORP OF CHINA