CN2845262Y

CN2845262Y - Break-off recognizing circuit of circuit breaker

Info

Publication number: CN2845262Y
Application number: CN 200520132692
Authority: CN
Inventors: 梁铸; 史文豪; 暴立勇
Original assignee: Beijing Sifang Automation Co Ltd
Current assignee: Beijing Sifang Automation Co Ltd
Priority date: 2005-11-17
Filing date: 2005-11-17
Publication date: 2006-12-06
Anticipated expiration: 2015-11-17

Abstract

The utility model provides a novel trip recognizing circuit of a circuit breaker, which is called for short DTS, wherein the novel break-off recognizing circuit of a circuit breaker is provided with a closed position fixing element HGJ which has a setting state and keeps to complete the fixation of a switching-on position by self electricity after closing a circuit breaker. The HGJ is provided with a plurality of groups of logic output capabilities so as to provide a control system to use. Circuit breaker state non-corresponding BDJ logic is jointly composed of the HGJ in the set position (self-hold) state 'and ' a circuit breaker trip position. The BDJ is provided with a plurality of groups of logic switching capabilities so as to provide the control system to use. The fixed HGJ element has the reset function of instantaneously relieving the self hold when the circuit breaker is operated to trip by a person, and the fixed HGJ element has the delaying reset function of the state non-corresponding logic. The HGJ element has the function of automatic identification of a reconstruction state after recovering a power failure. The DTS logic of the utility model can be composed of various concrete circuits.

Description

A kind of novel breaker tripping operation identification circuit

Technical field

Technology of the present utility model belongs to the electrical control field, is the control loop logical scheme of the trip reason of power equipment primary cut-out being carried out logic identification, is called for short DTS.

Background technology

Answer the function of relay protection of power system and secondary control loop required; when normal operating primary cut-out took place to transfer the displacement of trip position to by closing position, requiring control loop to jump to discern this displacement was to cause because of manual operation or because of other reasons such as relaying protection effect or explosive separations.

Background technology is for the routine system of controlled condition on the spot, be that the make and break contact that location status linked by control switch (operating handle KK) is achieved, this KK handle design has four steady state position: after closing in advance, close afterwards, presorting, divide, two from moving positions of the wink that resets: closing operation and sub-switching operation.Because artificially the operation that circuit breaker is carried out is all finished by operating handle KK, promptly, after carrying out breaker switching-on operation by rotating operation handle KK, each contact of contact group behind the expression breaker closing can be connected, as the circuit breaker displacement of non-artificial operation takes place, jump the position junction closure and can close the corresponding logic of leaving that back state contact forms " state is not corresponding ", go to finish and start reclosing and send out not function such as corresponding device contraposition flick of lamp of accident alarm and state with closed already KK.Reclosing successfully automatically terminates not corresponding states, reclosing failure or do not throw reclosing and must carry out the not corresponding reset operation of state according to contraposition flash of light by the operations staff, promptly, the operation personnel go to the KK handle according to flash of light anchor point prompting and presort the position and get final product, with the not corresponding contact of leaving of this off-state, do not need to carry out again one time trip operation.Artificial trip operation is left logic because the change of KK handling position makes the disconnection of combined floodgate back contact group can not form " state is not corresponding ".

Background technology is for comprehensive automation with distant control function and unattended station control system, be to adopt generation to have the magnetic freeze mode bistable relay HHJ of memory function to claim to close back position relay (or claiming KKJ), realize by the function of simulating the KK handle, promptly, as long as no matter which kind of mode is carried out closing operation and will be allowed HHJ set, the closed corresponding contact of HHJ of circuit breaker displacement tripping operation that non-artificial operation takes place will constitute the not corresponding logic of leaving of state with jumping position contact, remove to finish the startup reclosing, send out functions such as accident alarm, in the time of artificial trip operation HHJ is resetted, so replace the effect that closing the back circuit-closing contacts of KK handle by the set circuit-closing contacts of HHJ.And not corresponding the resetting of the state of permanent fault just needs clothing to rely remote-control channel, normally must carry out once the people again for the remote control trip operation to it, perhaps the operating process that resets for HHJ some groups of remote control roads of all special increases again to being in the trip position circuit breaker.

There are the following problems for HHJ simulation KK mode:

1. adopt the order of closing a floodgate to close the mode of back state set as HHJ, can not truly reflect circuit breaker reality located to close a floodgate the back state, because real trip position contact is just can disconnect when circuit breaker has transferred closing position to, because the set speed of HHJ is far faster than the closing speed of circuit breaker, therefore normal making process will go out the not corresponding error-logic of present condition.And the reason that the HHJ scheme can also be widely used so far always is, because domestic custom uses trip position TWJ to monitor the string people circuit connection of closing coil simultaneously, the coil of TWJ and closing operation contact place relation in parallel are operated while TWJ and are begun to return the appearance of having avoided error-logic thus in advance like this.Along with the Requirement Increases that uses the inner anti-jump function of circuit breaker, cause TWJ string people wiring to be obstructed, therefore have to change into circuit breaker and jump the TWJ mode of connection that the position auxiliary contact is directly controlled, the result highlights above-mentioned error-logic problem.

2. because to combine operations staff from system be that CRT by concentrator station carries out telemanagement to a plurality of sub-station equipments, not corresponding resetting can not resemble usual manner for state only needs operating handle is turned to pre-jumping position after closing a floodgate, need not carry out trip operation once more, finish and must clothing rely artificial mode to arrange remote control tripping operation or special remote control involution to operate, through facts have proved that to bring for the fail safe of combining from system's operation a lot of unfavorable.

3. combine from the long-range operational management personnel of tele-control system in the face of the CRT picture, for the not demonstration of corresponding states, do not resemble and be provided with very clear and definite and eye-catching acousto-optic hints such as contraposition flash of light and sound equipment the usual manner on control flow, therefore the not corresponding reset operation of combining after system is to permanent fault is very easy to be left in the basket.

4. occur usually needing power supply unit is checked after the permanent fault, therefore must control power supply by off device, because the mechanical relay that HHJ adopts permanent magnet to keep, just be disconnected as the direct current operative power source that is not reset of corresponding states not, when sending electricity again not corresponding states will reproduce, therefore be very easy to cause error starting reclosing and mistake to send out logic errors such as accident alarm;

Summary of the invention

It is a kind of that this novel circuit breaker trip identification is called for short DTS logic connection plan, 1) have circuit breaker close back state set and by self electricity keep finishing closing position fixing close a retaining element HGJ; 2) HGJ has some groups of logics and leaves ability and use for control system; 3) disposed position (self-sustaining) state HGJ " with " the circuit breaker trip position constitutes the not corresponding BDJ logic of circuit-breaker status jointly; 4) BDJ has some groups of logics and leaves ability and use for control system; 5) the HGJ element that is fixed has manual operation circuit breaker trip transient solution and removes the self-sustaining reset function of HGJ; 6) the HGJ element that is fixed has the not corresponding logical time delay reset function of leaving of state; 7) the HGJ element has the automatic recognition function of rebuilding state behind the power interruption recovering; 8) DTS logic of the present invention can be made of multiple physical circuit.

This novel concrete scheme provides a kind of novel breaker tripping operation identification circuit DTS that is used for the power equipment primary cut-out, comprise: closing position relay HWJ, tripping position relay TWJ, hand trip(ping) relay STJ, control power positive end KM+, control power supply negative terminal KM-, it is characterized in that, also comprise: close a fixed relay HGJ1 and a HGJ2, the not corresponding relay BDJ of state, and delay function is left element MOSFET, an end that closes a fixed relay HGJ1 links with an end of controlling power positive end KM+ and closing position relay HWJ, the other end is connected with the positive pole of a diode D2 and the end of tripping position relay TWJ, the other end of described closing position relay HWJ is connected with the negative pole of described diode D2, and be connected to hand trip(ping) relay STJ by a resistance R 1, and close the fixed relay HGJ1 and HGJ2 and delay function in parallel with described hand trip(ping) relay STJ leave element MOSFET, the other end of described tripping position relay TWJ links with the not corresponding relay BDJ of state, described BDJ is capacitor C 1 charging through resistance R 2, and finally make delay function leave element MOSFET conducting short circuit HGJ and time-delay reset BDJ, when breaker closing position relay HWJ contact is connected, HGJ is activated and forms self-sustaining by the HGJ1 contact through D2, described HGJ1 contact can constitute not counterlogic of state jointly with the TWJ contact simultaneously, and the not corresponding relay BDJ of the state that reaches, artificial tripping operation reaches the purpose of instant reset BDJ by hand trip(ping) relay STJ contact with the method for short circuit HGJ, HGJ2 aim at close the position fixedly intermediate logic leave and establish.

Technological innovation of this circuit and characteristics.

Circuit design take to close the position and start a circuit breaker that keeps by electricity and close a retaining element HGJ, therefore have true and can repeat to discern the ability of "on" position, as long as this state of the true closing position of circuit breaker will be by lock (solid) calmly (set), so not corresponding error-logic of state of having avoided HHJ scheme making process to occur, and HGJ of the present invention has according to the automatic recognition capability of circuit breaker physical location when ring current take place to interrupt recovering once more, can adapt to this automatically and close back set (fixing) and still HGJ should be resetted.

2. this circuit has not corresponding states time-delay auto-reset function, or else the not corresponding BDJ of the state under the permanent fault situation needs by the people for having carried out reset operation, and what overcome the HHJ scheme fail safe causes to operation is unfavorable.Promptly, after non-artificial tripping operation appears in circuit breaker, this circuit will provide not corresponding the leaving of some groups of states to supply control system required as starting functions such as reclosing and accident alarm, the mode of this circuit by time-delay reset HGJ, guarantee all groups leave task and all finish after not corresponding BDJ state will automatically reset.

3. the circuit breaker trip of this programme design is discerned DTS logic connection plan, with close a retaining element HGJ and state not counter element BDJ be core, can directly constitute, also can constitute by other various ways such as electronic logic door and relay assemblies by mechanical relay or photoelectric relay.

Description of drawings

Accompanying drawing 1 shows this programme circuit breaker trip identification circuit and constitutes logic diagram;

Accompanying drawing 2 is by electronic component and mechanical type and photoelectric type relay, presses the concrete circuit of implementing of a kind of circuit breaker trip identification of the logical combination formation of this utility model technology.

Specific embodiments

As shown in Figure 1, close the position startup by circuit breaker and close the fixing or gate logic HGJ (HGJ set) in position, HGJ is provided with some groups of logic outputs, for directly leaving, constitute not counterlogic and self-sustaining use, HGJ can remove self-sustaining (HGJ resets) by artificial trip operation transient solution, also can be by not corresponding BDJ logic output time-delay reset HGJ, constitute the not corresponding BDJ logic of state of circuit breaker by HGJ set output and circuit breaker trip position, BDJ has some groups of logic fan-out capabilities.

Use the DTS function of this DTS logic realization can adopt many kinds of specific embodiments, accompanying drawing 2 has been enumerated a kind of concrete circuit of implementing of circuit breaker trip identification that is made of by the logical combination of this circuit electronic component and mechanical type and photoelectric type relay, as shown in Figure 2, wherein, HWJ-closing position relay, the TWJ-tripping position relay, KM+-controls power positive end, KM-controls power supply negative terminal, STJ-hand trip(ping) relay, the MOSFET-delay function is left element, and HGJ1,2-close a fixed relay, the not corresponding relay of BDJ-state.Its logical process is described below:

Discern the DTS circuit according to the circuit breaker trip that this circuit logic constitutes, directly use the power supply of DC220V or DC110V breaker operator power supply, use two photoelectric relay HGJ1,2 as closing a retaining element, when its position relay of breaker closing HWJ contact is connected, HGJ is activated and forms self-sustaining by the HGJ1 contact through D2, this HGJ1 contact can constitute not counterlogic of state jointly with the TWJ contact simultaneously, the not corresponding heavy motor type relay BDJ of the state that is provided with specially, be used for moving in BDJ logic wink and leave expansion, the BDJ excitation begins the charging slowly to C2 through R2 simultaneously, when C2 voltage reaches the voltage-stabiliser tube breakdown point, SOMFET conducting short circuit HGJ reaches the purpose of time-delay reset BDJ, artificial tripping operation reaches the purpose of instant reset BDJ equally by the hand trip(ping) relay tip with the method for short circuit HGJ, HGJ2 aim at close the position fixedly intermediate logic leave and establish.

Claims

1. novel breaker tripping operation identification circuit DTS who is used for the power equipment primary cut-out, comprise: closing position relay HWJ, tripping position relay TWJ, hand trip(ping) relay STJ, control power positive end KM+, control power supply negative terminal KM-, it is characterized in that, also comprise: close a fixed relay HGJ1 and a HGJ2, the not corresponding relay BDJ of state, and delay function is left element MOSFET, an end that closes a fixed relay HGJ1 links with an end of controlling power positive end KM+ and closing position relay HWJ, the other end is connected with the positive pole of a diode D2 and the end of tripping position relay TWJ, the other end of described closing position relay HWJ is connected with the negative pole of described diode D2, and be connected to hand trip(ping) relay STJ by a resistance R 1, and close the fixed relay HGJ1 and HGJ2 and delay function in parallel with described hand trip(ping) relay STJ leave element MOSFET, the other end of described tripping position relay TWJ links with the not corresponding relay BDJ of state, described BDJ is capacitor C 1 charging through resistance R 2, and finally make delay function leave element MOSFET conducting short circuit HGJ and time-delay reset BDJ, when breaker closing position relay HWJ contact is connected, HGJ is activated and forms self-sustaining by the HGJ1 contact through D2, described HGJ1 contact can constitute not counterlogic of state jointly with the TWJ contact simultaneously, and the not corresponding relay BDJ of the state that reaches, artificial tripping operation reaches the purpose of instant reset BDJ by hand trip(ping) relay STJ contact with the method for short circuit HGJ, HGJ2 aim at close the position fixedly intermediate logic leave and establish.