CN103532084B - The involution loop of accident resultant signal in microcomputer type relay protection loop - Google Patents

The involution loop of accident resultant signal in microcomputer type relay protection loop Download PDF

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Publication number
CN103532084B
CN103532084B CN201310525543.0A CN201310525543A CN103532084B CN 103532084 B CN103532084 B CN 103532084B CN 201310525543 A CN201310525543 A CN 201310525543A CN 103532084 B CN103532084 B CN 103532084B
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involution
loop
input
separating brake
terminals
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CN103532084A (en
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蒋越
施俊伟
朱建敏
彭宏芬
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Changzhou Power Supply Co of Jiangsu Electric Power Co
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Changzhou Power Supply Co of Jiangsu Electric Power Co
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Abstract

The invention provides the involution loop of accident resultant signal in a kind of microcomputer type relay protection loop, be included in five anti-lock, control handle, auxiliary relay in breaker control circuit, breaker operator loop, positive supply, negative supply and involution button; Positive supply to be anti-lockly electrically connected with the input of control handle by five; The combined floodgate input conllinear in the first separating brake output of control handle, the combined floodgate input of auxiliary relay and breaker operator loop; Combined floodgate output and the separating brake output of auxiliary relay all connect negative supply; The separating brake input conllinear of 1, No. 4 terminals of involution button, the second separating brake output of control handle and auxiliary relay; The separating brake input in No. 2 wiring termination positive supplies of involution button, No. 3 wiring termination breaker operator loops.The present invention can make staff carry out involution work to accident resultant signal quickly and easily, can not cause misoperation and miss the accidents such as misclassification operation, making transformer station can enter normal work quickly.

Description

The involution loop of accident resultant signal in microcomputer type relay protection loop
Technical field
The present invention relates to a kind of involution loop of substation accident resultant signal, be specifically related to the involution loop of accident resultant signal in a kind of microcomputer type relay protection loop.
Background technology
In transformer station's microcomputer type relay protection loop, accident resultant signal is important, a conventional pilot signal.In substation breakers because transformer station when the reason such as fault trip or jump disconnects is with regard to cisco unity malfunction.Because breaker operator control switch position is not corresponding with circuit breaker physical location; thus substation breakers can send an accident resultant signal to background monitoring system because of relay protection circuit when the reason such as fault trip or jump disconnects, and represents that circuit breaker there occurs fault and needs query processing immediately.As shown in Figure 1, positive supply+KM is connected with the normally opened contact of auxiliary relay KKJ.The normally opened contact of auxiliary relay KKJ is connected with the normally opened contact of circuit breaker trip position relay TWJ.The normally opened contact of circuit breaker trip position relay TWJ is connected with protection supervisory equipment.When substation breakers disconnects because of the reason such as fault trip or jump, positive supply+KM sends an accident resultant signal by the normally opened contact of auxiliary relay KKJ and the normally opened contact of circuit breaker trip position relay TWJ and protection supervisory equipment to background monitoring system.An all multiple stage breaker interval of power transformation, every platform breaker interval breaks down when disconnecting all can send an accident resultant signal to background monitoring system.Send to background monitoring system after several the simultaneous several accident resultant signals of breaker interval can merge, the accident resultant signal after this merging is called full substation accident resultant signal.Accident resultant signal and full substation accident resultant signal are all called accident resultant signal below.Must carry out involution to accident resultant signal after background monitoring system obtains accident resultant signal makes transformer station recover normal work.Work of transformer substation personnel generally adopt two kinds of methods when the involution of accident settlement resultant signal.The first is directly closed a floodgate by circuit breaker, circuit breaker position changed into " after closing a floodgate " position.The second be the circuit breaker that makes to have separated because breaking down again separating brake once, then during separating brake, circuit breaker position is constant, just the breaker operator position of the switch is become " after separating brake " position from " after closing a floodgate " position.It is corresponding with console switch position that above-mentioned two kinds of methods can realize circuit breaker position, thus can involution accident resultant signal make transformer station recover normal work.Just to breaker closing power transmission when the first has been got rid of the fault that the apparatus resetting method of accident resultant signal is only applicable to each breaker interval and can normally work, thus realize the involution work to accident resultant signal.Although the involution work of the second to accident resultant signal is only applicable to breaker interval fault and still can not gets rid of immediately and breaker interval can't normally work, but the processing stage that the fault of this breaker interval being received and having entered, now can carry out involution to accident resultant signal, just make full substation accident resultant signal all carry out involution after carrying out involution to accident resultant signal, now transformer station can normally work.Also just can continue to background monitoring system transmission accident resultant signal when now other breaker intervals of this transformer station trip as broken down and cause the action bullet window prompting work of transformer substation personnel inquiry process again of full station accident resultant signal.The breaker open operation operation that the involution work of above-mentioned the second to accident resultant signal is carried out, again carry out separating brake on the circuit breaker being in gate-dividing state, this method of operation is have cannot by anti-misoperation flow process in high performance five anti-lock WF electronic systems, and namely the contact of five anti-lock WF cannot be connected.As just unlocking operation will must be carried out to five anti-lock WF electronic systems by the anti-misoperation flow process in five anti-lock WF electronic systems.And the very complicated trouble of authoring program to five anti-lock WF electronic system unlocking operations.The method being the figure anti-lock WF contact of convenience short circuit five as work of transformer substation personnel also can involution accident resultant signal, but the method belongs to operation against rules, and the method is easy to cause breaker interval misclassification to run, and causes a serious accident.
Summary of the invention
The object of the invention is: the involution loop that accident resultant signal in a kind of microcomputer type relay protection loop is provided; this involution loop can make work of transformer substation personnel carry out involution work to accident resultant signal quickly and easily rapidly; and this involution work can not cause misoperation and miss the accidents such as misclassification operating circuit breaker; make transformer station can enter normal work quickly, effective guarantee electric power supplies.
Technical scheme of the present invention is: in microcomputer type relay protection loop of the present invention the involution loop of accident resultant signal, comprises five anti-lock WF, the control handle KK be arranged in breaker control circuit, auxiliary relay KKJ, breaker operator loop, positive supply+KM, negative supply-KM; Described five anti-lock WF have input and output; Control handle KK has input, the first separating brake output and the second separating brake output; Auxiliary relay KKJ has combined floodgate input, combined floodgate output, separating brake input and separating brake output; Breaker operator loop has combined floodgate input and separating brake input;
Positive supply+KM is electrically connected with the input of five anti-lock WF, and the output of five anti-lock WF is electrically connected with the input of control handle KK; The combined floodgate input conllinear in the first separating brake output of control handle KK, the combined floodgate input of auxiliary relay KKJ and breaker operator loop; Combined floodgate output and the separating brake output of auxiliary relay KKJ are all electrically connected with negative supply-KM; Its design feature is:
Also comprise involution button F GAN; Described involution button F GAN comprises normally opened contact and normally-closed contact; The normally opened contact of involution button F GAN has No. 2 and No. 4 terminals; The normally-closed contact of involution button F GAN has No. 1 and No. 3 terminals; No. 1 terminals of involution button F GAN, No. 4 terminals of involution button F GAN, the second separating brake output of control handle KK and the separating brake input conllinear of auxiliary relay KKJ; No. 2 terminals of involution button F GAN are electrically connected with positive supply+KM; No. 3 terminals of involution button F GAN are electrically connected with the separating brake input in breaker operator loop.
The present invention has positive effect: in (1) microcomputer type relay protection loop of the present invention the involution loop of accident resultant signal; work of transformer substation personnel can be made to carry out involution work to accident resultant signal rapidly, quickly and easily; and this involution work can not cause misoperation and miss the accidents such as misclassification operation; thus making transformer station can enter normal work quickly, effective guarantee electric power supplies.(2) the involution loop of accident resultant signal in microcomputer type relay protection loop of the present invention, structure is simple, cost is lower, easy for installation, is convenient to promote.
Accompanying drawing explanation
Fig. 1 is the principle schematic in accident resultant signal loop in microcomputer type relay protection loop;
Fig. 2 is electrical structure schematic diagram of the present invention;
Fig. 3 is the winding diagram of each terminal of control handle in Fig. 2, auxiliary relay, breaker operator loop and involution button.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
(embodiment 1)
The involution loop of accident resultant signal in the microcomputer type relay protection loop of the present embodiment, the microcomputer type relay protection loop of the route protection measure and control device that the model of producing for Nanjing Guo electricity Nan Si Electric Applicance Co., Ltd is NSL641 illustrates the embodiment of the present embodiment in conjunction with each accompanying drawing:
See Fig. 1 to Fig. 3; the involution loop of accident resultant signal in the microcomputer type relay protection loop of the present embodiment, forms primarily of the five anti-lock WF, the control handle KK that are arranged in breaker control circuit, auxiliary relay KKJ, breaker operator loop, positive supply+KM, negative supply-KM and involution button F GAN.Five anti-lock WF have input and output; Control handle KK has 1 to No. 20 terminals, and wherein No. 17 terminals are input, and No. 2 terminals are the first separating brake output, and No. 4 terminals are the second separating brake output; Auxiliary relay KKJ has 1 to No. 12 terminals, and wherein, No. 1 terminals are combined floodgate input, and No. 7 terminals are separating brake input, and No. 6 terminals are combined floodgate output, and No. 12 terminals are separating brake output; Breaker operator loop has No. 7 and No. 37 terminals, and wherein, No. 7 terminals are combined floodgate input, and No. 37 terminals are separating brake input; Involution button F GAN is made up of normally opened contact and normally-closed contact, and the normally opened contact of involution button F GAN has No. 2 and No. 4 terminals; The normally-closed contact of involution button F GAN has No. 1 and No. 3 terminals.In the present embodiment, the LAY50 type tack push-button switch that involution button F AGN preferably adopts Shuan Ke electric corporation, Shanghai to produce.
Positive supply+KM is electrically connected with the input of five anti-lock WF, and the output of five anti-lock WF is electrically connected with the input (i.e. No. 17 terminals) of control handle KK; Combined floodgate input (No. 7 terminals) conllinear in the first separating brake output (No. 2 terminals) of control handle KK, the combined floodgate input (No. 1 terminals) of auxiliary relay KKJ and breaker operator loop; Combined floodgate output (No. 6 terminals) and the separating brake output (No. 12 terminals) of auxiliary relay KKJ are all electrically connected with negative supply-KM; The second separating brake output (No. 4 terminals) of control handle KK, the separating brake input (No. 7 terminals) of auxiliary relay KKJ, No. 1 terminals of involution button F GAN and No. 4 terminals conllinear of involution button F GAN; No. 2 terminals of involution button F GAN are electrically connected with positive supply+KM; No. 3 terminals of involution button F GAN are electrically connected with the separating brake input (No. 37 terminals) in breaker operator loop.
In the microcomputer type relay protection loop of the present embodiment, the involution loop works principle of accident resultant signal is summarized as follows:
Under normal circumstances, No. 1 terminals and No. 3 terminals of the normally-closed contact of involution button F GAN are in connected state, and No. 2 terminals and No. 4 terminals of the normally opened contact of involution button F GAN are in off-state; When the normal power transmission in substation breakers interval, the contact of five anti-lock WF is in connected state.Control handle KK carries out input (i.e. No. 17 terminals) and No. 18 terminals connections of breaker closing and control handle KK; Simultaneously No. 1 terminals of control handle KK and No. 2 terminals were also connected in breaker closing moment; Positive supply+KM is connected with breaker operator loop combined floodgate input terminal (i.e. No. 7 terminals).Positive supply+KM is also connected with the combined floodgate input (i.e. No. 1 terminals) of auxiliary relay KKJ.Now control handle KKJ is in " after closing a floodgate " state.Relay protection circuit is now as shown in Figure 1: the normally opened contact of auxiliary relay KKJ is connected.The normally-closed contact of circuit breaker trip position relay TWJ disconnects.Now transformer station is in normal operating conditions.
When substation breakers disconnects because of the reason such as fault trip or jump, state that control handle KKJ is still in " after closing a floodgate ".But circuit breaker is in open position, the normally-closed contact of circuit breaker trip position relay TWJ is connected, and circuit breaker sends accident resultant signal.Now work of transformer substation personnel need involution accident resultant signal.So work of transformer substation personnel press involution button F GAN.After pressing involution button F GAN, first the normally-closed contact (i.e. No. 1 terminals and No. 3 terminals) of involution button F GAN disconnects, after normally-closed contact 1,3 disconnection of involution button F GAN, positive supply+KM disconnects with the separating brake input terminal (i.e. No. 37 terminals) in breaker operator loop, and now circuit breaker carries out separating brake.The normally opened contact (i.e. No. 2 and No. 4 terminals) of now involution button F GAN is connected; Positive supply+KM is connected with the separating brake input (i.e. No. 7 terminals) of auxiliary relay KKJ by the normally opened contact 2,4 of involution button F GAN connected, and makes auxiliary relay KKJ convert " after separating brake " position to.The normally opened contact of the auxiliary relay KKJ in the relay protection circuit now in Fig. 1 disconnects.After the normally opened contact disconnection of auxiliary relay KKJ, accident resultant signal loop is disconnected.Thus achieve the involution of accident resultant signal.Involution button F GAN normally-closed contact 1,3 role is that its normally-closed contact 1,3 disconnects when pressing involution button F GAN.Now brake division loop of circuit breaker disconnects, and positive supply+KM disconnects with the separating brake input terminal 37 in breaker operator loop.The separating brake input terminal 37 in positive supply+KM and breaker operator loop disconnects and can prevent will being in the operating circuit breaker mistake of "on" position when by mistake pressing the involution button running interval and divide to fall.
An electric substation has multiple stage breaker interval usually, thus on every platform breaker interval, is all provided with an involution button F GAN.The breaker interval disconnected that breaks down needs to carry out involution by involution button F GAN to accident resultant signal.The breaker interval disconnected that do not break down just does not need by involution button F GAN.Work of transformer substation personnel often push the wrong involution button F GAN when pressing involution button.If there is no normally-closed contact 1,3, will be divided to fall by the switch pushing the wrong the breaker interval of involution button F GAN, produced misoperation fault.Therefore normally-closed contact 1,3 disconnection wherein when pushing the wrong involution button F GAN is devised in the present embodiment.Positive supply+KM is disconnected with the separating brake input terminal 37 in breaker operator loop, and " control loop template " signal can be sent out in this operation interval.The mistake that misoperation would not be caused to cause like this divides the accidents such as run switch.
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present invention.

Claims (1)

1. the involution loop of accident resultant signal in microcomputer type relay protection loop, comprises five anti-lock WF, the control handle KK be arranged in breaker control circuit, auxiliary relay KKJ, breaker operator loop, positive supply+KM, negative supply-KM; Described five anti-lock WF have input and output; Control handle KK has input, the first separating brake output and the second separating brake output; Auxiliary relay KKJ has combined floodgate input, combined floodgate output, separating brake input and separating brake output; Breaker operator loop has combined floodgate input and separating brake input;
Positive supply+KM is electrically connected with the input of five anti-lock WF, and the output of five anti-lock WF is electrically connected with the input of control handle KK; The combined floodgate input conllinear in the first separating brake output of control handle KK, the combined floodgate input of auxiliary relay KKJ and breaker operator loop; Combined floodgate output and the separating brake output of auxiliary relay KKJ are all electrically connected with negative supply-KM; It is characterized in that:
Also comprise involution button F GAN; Described involution button F GAN comprises normally opened contact and normally-closed contact; The normally opened contact of involution button F GAN has No. 2 and No. 4 terminals; The normally-closed contact of involution button F GAN has No. 1 and No. 3 terminals; No. 1 terminals of involution button F GAN, No. 4 terminals of involution button F GAN, the second separating brake output of control handle KK and the separating brake input conllinear of auxiliary relay KKJ; No. 2 terminals of involution button F GAN are electrically connected with positive supply+KM; No. 3 terminals of involution button F GAN are electrically connected with the separating brake input in breaker operator loop.
CN201310525543.0A 2013-10-30 2013-10-30 The involution loop of accident resultant signal in microcomputer type relay protection loop Active CN103532084B (en)

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CN109301937A (en) * 2018-10-31 2019-02-01 国网湖南省电力有限公司 A kind of scheduling substation accident resultant signal synthetic method and system
CN111682647B (en) * 2020-07-03 2021-09-21 国网四川省电力公司绵阳供电公司 Power-off resetting device and system for telecontrol signal of transformer substation

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CN203553880U (en) * 2013-10-30 2014-04-16 江苏省电力公司常州供电公司 Integrated accident signal resetting circuit in microcomputer type relay protection circuit

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CN203553880U (en) * 2013-10-30 2014-04-16 江苏省电力公司常州供电公司 Integrated accident signal resetting circuit in microcomputer type relay protection circuit

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