CN105093009A

CN105093009A - Multi-path intelligent on-line leakage protection uninterruptible-power-supply testing apparatus capable of improving power supply reliability

Info

Publication number: CN105093009A
Application number: CN201510420539.7A
Authority: CN
Inventors: 蔡其芬; 孙德斌; 陶慧岩; 郁宏明
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Nantong Power Supply Co of Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Nantong Power Supply Co of Jiangsu Electric Power Co Ltd
Priority date: 2014-07-18
Filing date: 2014-07-18
Publication date: 2015-11-25
Also published as: CN104101765A; CN106291184A; CN106291185A; CN106019035A; CN105044510A; CN106019141A; CN106019031A; CN106291347A; CN106019144A; CN106291346A; CN106291054A; CN106291055A; CN106019032A; CN106019030A; CN106291056A; CN106019038A; CN106019142A; CN106249026A; CN106324387A; CN106324391A

Abstract

The invention discloses a multi-path intelligent on-line leakage protection uninterruptible-power-supply testing apparatus capable of improving power supply reliability. An intelligent on-line leakage protection uninterruptible-power-supply controller is connected with multiple groups of testing loops and multiple groups of corresponding relays. According to the invention, the structure is reasonable; and wiring is simple. Testing and trial jumping are carried out on leakage protection under the circumstances that no power interruption is carried out on a client; and the power supply reliability and leakage protection completeness are improved. Multiple paths can be tested respectively.

Description

The multi-way intelligence improving power supply reliability leaks online protects uninterrupted power test device

The application is application number 201410346438.5, the divisional application of applying date 2014.7.18, title " multi-way intelligence leaks online and protects uninterrupted power test device ".

Technical field

The present invention relates to a kind of multi-way intelligence and leak guarantor's uninterrupted power test device online.

Background technology

Rural power grids RCD (be called for short to leak and protect) the installation and operation code of National Energy Board; rural low voltage network classification installing leaks that to protect is ensure low voltage electric network safe operation, reduce or one of effective measures preventing personal electric shock casualty accident; total guarantor in common transformer platform district, rural area should be installed by power supply enterprise; in the bus being arranged on transformer platform area or each bar make somebody a mere figurehead on extension line, leak the combined protector protected and should adopt electromechanical three-phase and four-line protector and conform with the regulations.Leak to protect in operational management and require monthly test action characteristic, thunderstorm season is tested weekly once.

Need routine test, trial jump owing to leaking to protect in operational management, low-voltage customer dead electricity can be caused in operation, reduce power supply reliability and add the Frequent trip that client thinks.

At present, rural comprehensive change is divided into multichannel outlet substantially, is 3 ~ 5 tunnel outlets substantially, the outlet of every road is all provided with Lou to be protected, and tester every road leakage guarantor just must install a set of, and wiring becomes many, especially little for panel box clearance spaces, often overlap and all fill tester and just have any problem.

Summary of the invention

The object of the present invention is to provide a kind of rational in infrastructure, wiring is simple, improve power supply reliability and leak and protect integrality, and can leak online and protect uninterrupted power test device by the multi-way intelligence tested respectively of multichannel.

Technical solution of the present invention is:

A kind of multi-way intelligence leaks guarantor's uninterrupted power test device online, it is characterized in that: comprise intelligent online leakage and protect the controller that do not have a power failure, and intelligent online leakage is protected the controller that do not have a power failure and is connected to organize test loops and corresponding many group relaies more; Described intelligent online is leaked and is protected the controller that do not have a power failure and comprise and be connected on contactor and leak the first current sensor protected between device contact, one end of the second current sensor is connected between contactor and the first current sensor, the other end of the second current sensor is connected with the contact of the first relay, the contact phase-connecting wire L1 of the first relay; A leakage currents resistance one end is connected with zero line, and the other end is connected with the contact of the second relay, and the contact of the second relay connects phase line on rear side of test loop mutual inductor; First, second relay is in parallel, and a terminal connecting zero line of first, second relay, the other end is connected with controller, and controller phase-connecting wire L1, controller is provided with remote-control communication interface.

The present invention is rational in infrastructure, and wiring is simple, when guarantor not testing, trial jump to leaking to when client's power-off, can improve power supply reliability and leaking and protecting integrality; And can multichannel test respectively.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described.

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is that intelligent online leaks the structural representation protecting the controller that do not have a power failure.

Embodiment

A kind of multi-way intelligence leaks guarantor's uninterrupted power test device online, comprises intelligent online leakage and protects the controller that do not have a power failure, and intelligent online leakage is protected the controller that do not have a power failure and is connected to organize test loops and corresponding many group relaies (often organizing 2 relays) more; Described intelligent online is leaked and is protected the controller that do not have a power failure and comprise and be connected on contactor JCQ and leak the first current sensor LJ1 protected between device LBQ contact, one end of the second current sensor LJ2 is connected between contactor JCQ and the first current sensor LJ1, the other end of the second current sensor LJ2LJ2 is connected with the contact of the first relay k1, the contact phase-connecting wire L1 of the first relay k1; A leakage currents resistance R one end is connected with zero line N, and the other end is connected with the contact of the second relay K 2, and the contact of the second relay K 2 connects phase line on rear side of test loop mutual inductor; First, second relay is in parallel, a terminal connecting zero line N of first, second relay, other end phase-connecting wire L1.

Intelligent online leaks the testing sequence of protecting the controller that do not have a power failure:

1, K1 closes, and LJ1 electric current reduces, and LJ3 electric current increases, and confirms that K1 closes;

2, K2 closes, and leaks and protects action, and LJ1 is that 0, LJ2 electric current increases, and confirms to leak and protects action;

3, K2 disconnects, and LJ2 reduces, and LJ1 increases, and confirms to leak to protect to close;

4, K1 disconnects, and test terminates.

Can timing automatic test be carried out, connect the remote-controlled distant place of order circuit and test and return results; For preventing the short circuit of phase place wrong, intelligent online leakage is protected the controller that do not have a power failure and is protected power supply same-phase with leakage, namely connecing control power supply from leakage guarantor; Working power is defaulted as AC220V, on-the-spot as contactor be AC380V time, switchable power supply pattern, the data of current sensor send controller to and carry out logical relation judgement; Protect wiring with leakage only to need several (Φ 1 ~ Φ 4); Φ 5 connects phase line (being better than L1 homophase most) on rear side of test loop mutual inductor.

Multi-channel test order:

First Kn-1 adhesive during test current loop, then Kn-2 adhesive again; Exit first Kn-2 dead electricity when testing current loop, then Kn-1 dead electricity again, disconnects with current loop.Kn-2 with two normally closed be guarantee reliable.

Claims

1. the multi-way intelligence improving power supply reliability leaks guarantor's uninterrupted power test device online, it is characterized in that: comprise intelligent online leakage and protect the controller that do not have a power failure, intelligent online leakage is protected the controller that do not have a power failure and is connected to many group test loops and corresponding many group relaies, often organizes 2 relays; Described intelligent online is leaked and is protected the controller that do not have a power failure and comprise and be connected on contactor JCQ and leak the first current sensor LJ1 protected between device LBQ contact, one end of the second current sensor LJ2 is connected between contactor JCQ and the first current sensor LJ1, the other end of the second current sensor LJ2LJ2 is connected with the contact of the first relay k1, the contact phase-connecting wire L1 of the first relay k1; A leakage currents resistance R one end is connected with zero line N, and the other end is connected with the contact of the second relay K 2, and the contact of the second relay K 2 connects phase line on rear side of test loop mutual inductor; First, second relay is in parallel, a terminal connecting zero line N of first, second relay, other end phase-connecting wire L1;

(1) K1 closes, and LJ1 electric current reduces, and LJ3 electric current increases, and confirms that K1 closes;

(2) K2 closes, and leaks and protects action, and LJ1 is that 0, LJ2 electric current increases, and confirms to leak and protects action;

(3) K2 disconnects, and LJ2 reduces, and LJ1 increases, and confirms to leak to protect to close;

(4) K1 disconnects, and test terminates;

Multi-channel test order:

First Kn-1 adhesive during test current loop, then Kn-2 adhesive again; Exit first Kn-2 dead electricity when testing current loop, then Kn-1 dead electricity again, disconnects with current loop; Kn-2 with two normally closed be guarantee reliable.