CN104882795A - Power distribution network ring main unit control circuit having broken line monitoring function - Google Patents
Power distribution network ring main unit control circuit having broken line monitoring function Download PDFInfo
- Publication number
- CN104882795A CN104882795A CN201510222853.4A CN201510222853A CN104882795A CN 104882795 A CN104882795 A CN 104882795A CN 201510222853 A CN201510222853 A CN 201510222853A CN 104882795 A CN104882795 A CN 104882795A
- Authority
- CN
- China
- Prior art keywords
- contact
- broken string
- loop
- relay
- separating brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a power distribution network ring main unit control circuit having a broken line monitoring function. The power distribution network ring main unit control circuit includes a closing broken line monitoring relay, an opening broken line monitoring relay, a remote communication contact and a broken line on-site indication lamp. The closing broken line monitoring relay and the opening broken line monitoring relay each include a coil and two normally closed contacts. The coil of the closing broken line monitoring relay is in parallel connection with a normally open auxiliary contact of a closing intermediate relay. The coil of the opening broken line monitoring relay is in parallel connection with a normally open auxiliary contact of an opening intermediate relay. The two normally closed contacts of each of the closing broken line monitoring relay and the opening broken line monitoring relay are respectively connected to the remote communication contact and the broken line on-site indication lamp respectively. According to the invention, a remote control circuit abnormity monitoring method and a local control circuit abnormity monitoring method are provided in a creative manner, thereby thoroughly solving the problems that inspection workers cannot timely find and handle control circuit defects due to the lack of on-site or remote alarming signals causes inspection workers at present. Therefore, the operation correctness of remote control by power distribution network calling workers is improved.
Description
Technical field
The present invention relates to distribution network engineering technical field, be specifically related to a kind of power distribution network ring main unit control loop with broken string function for monitoring.
Background technology
At present, national Distribution Automation Construction constantly advances, and power distribution network is intelligent, automatization level constantly promotes.Successful rate of remote control is one of key index affecting the practical level of power distribution automation.The mode that existing power distribution network ring main unit adopts the position of the switch to show on the spot, and the divide-shut brake position of switch is sent to electrical power distribution automatization system main website in the mode of remote signalling contact by power distribution automation station institute terminal installation monitors.
Existing ring main unit control loop generally comprises the long-range on the spot switching circuit being connected in parallel to DC power supply bus, closing circuit, sub-gate circuit, close a floodgate and indicate loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop, be serially connected with combined floodgate auxiliary relay KM1 in closing circuit and often open auxiliary contact and closing coil HQ, be serially connected with separating brake auxiliary relay in sub-gate circuit and often open auxiliary contact KM2 and switching winding TQ, and the coil of combined floodgate auxiliary relay KM1, the coil of separating brake auxiliary relay KM2 is serially connected with on the spot in long-range switching circuit respectively.But when existing ring main unit control loop template, the on-the-spot index signal that lacks causes tour personnel cannot find the unusual condition of control loop, cannot eliminate defect in time.Simultaneously, the information of control loop template is not sent to power distribution automation main station system by remote signalling mode, cause power distribution network dispatcher cannot Timeliness coverage control loop abnormal conditions, affect the correctness of power distribution network dispatcher straighforward operation, thus affect the practical operation key index of the power distribution automations such as successful rate of remote control.
Summary of the invention
The technical problem to be solved in the present invention is: for the above-mentioned technical problem of prior art, there is provided a kind of and can provide effective supervision means for power distribution network operations staff to the tour of ring main unit scene, for power distribution network dispatcher provides reliable judgement to the supervision of control loop and straighforward operation, the power distribution network ring main unit control loop with broken string function for monitoring of auxiliary tone personnel to the success rate of ring main unit straighforward operation can be improved.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of power distribution network ring main unit control loop with broken string function for monitoring, comprise the long-range on the spot switching circuit being connected in parallel to DC power supply bus, closing circuit, sub-gate circuit, close a floodgate and indicate loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop, be serially connected with combined floodgate auxiliary relay KM1 in described closing circuit and often open auxiliary contact and closing coil HQ, be serially connected with separating brake auxiliary relay KM2 in described sub-gate circuit and often open auxiliary contact and switching winding TQ, and the coil of combined floodgate auxiliary relay KM1, the coil of separating brake auxiliary relay KM2 is serially connected with on the spot in long-range switching circuit respectively, described power distribution network ring main unit control loop also comprises the broken string supervisory relay KA1 that closes a floodgate, separating brake broken string supervisory relay KA2, remote signalling contact DTU-YX003 and the on-the-spot indicator light YR of broken string, described combined floodgate broken string supervisory relay KA1 and separating brake broken string supervisory relay KA2 includes coil and two normally closed contacts, the auxiliary relay KM1 that closes a floodgate in the coil of the described broken string supervisory relay KA1 that closes a floodgate and closing circuit often opens auxiliary contact and is connected in parallel, in the coil of described separating brake broken string supervisory relay KA2 and sub-gate circuit, separating brake auxiliary relay KM2 often opens auxiliary contact and is connected in parallel, a normally closed contact KA1.1 of the described broken string supervisory relay KA1 that closes a floodgate an and normally closed contact KA2.1 of separating brake broken string supervisory relay KA2 and remote signalling contact DTU-YX003 broken string main website remote signalling in series loop, another normally closed contact KA1.2 of the described broken string supervisory relay KA1 that closes a floodgate and another normally closed contact KA2.2 of separating brake broken string supervisory relay KA2 and instruction loop, the on-the-spot indicator light YR of broken string broken string scene in series, instruction loop, described broken string scene, broken string main website remote signalling loop is all connected in parallel with closing circuit.
Preferably, described long-range switching circuit on the spot comprise a distant place on the spot diverter switch SA, on the spot switch knob SB1, DTU control splice grafting point, on the spot opening button SB2, DTU and control tapping point and a switch auxiliary contact QF1, described switch knob on the spot SB1, DTU control be connected to DC power supply bus after splice grafting point is connected in parallel the normally closed contact QF1.1 of rear one end successively by the coil of combined floodgate auxiliary relay KM1, a switch auxiliary contact QF1 negative pole, the other end then by the way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, described opening button SB2 on the spot, DTU control to be connected to after tapping point is connected in parallel the normal opened contact QF1.2 of rear one end successively by the coil of separating brake auxiliary relay KM2, a switch auxiliary contact QF1 negative pole of DC power supply bus, the other end then by another way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, self-sustaining contact one end that combined floodgate auxiliary relay KM1 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by the coil successively by combined floodgate auxiliary relay KM1, the negative pole of DC power supply bus is connected to after the normally closed contact QF1.1 of a switch auxiliary contact QF1, self-sustaining contact one end that separating brake auxiliary relay KM2 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by often opening the coil of auxiliary contact KM2 successively by separating brake auxiliary relay, the negative pole of DC power supply bus is connected to after the normal opened contact QF1.2 of a switch auxiliary contact QF1.
Preferably, be also provided with trip protection contact in described sub-gate circuit, in described trip protection contact and sub-gate circuit, often opening between auxiliary contact of separating brake auxiliary relay KM2 is connected in parallel.
Preferably, described closing circuit and sub-gate circuit are also connected with a switch auxiliary contact QF2 jointly, and the normally closed contact QF2.1 of a described switch auxiliary contact QF2 is connected in series in closing circuit, the normal opened contact QF2.2 of a described switch auxiliary contact QF2 is connected in series in sub-gate circuit.
Preferably, described combined floodgate instruction loop comprises combined floodgate indicator light HG, described separating brake instruction loop comprises separating brake indicator light HR, described combined floodgate instruction loop, separating brake instruction loop are also connected with a switch auxiliary contact QF3 jointly, and the normally closed contact QF3.1 of a described switch auxiliary contact QF3 is connected in series in combined floodgate instruction loop, the normal opened contact QF3.2 of a described switch auxiliary contact QF3 is connected in series in separating brake instruction loop.
Preferably, described main website switching signal loop comprises remote signalling contact DTU-YX001, main website sub-gate signal loop comprises remote signalling contact DTU-YX002, described main website switching signal loop and main website sub-gate signal loop are also connected with a switch auxiliary contact QF4 jointly, and the normally closed contact QF4.1 of a described switch auxiliary contact QF4 is connected in series in main website switching signal loop, the normal opened contact QF4.2 of a described switch auxiliary contact QF4 is connected in series in main website sub-gate signal loop.
Preferably, described power distribution network ring main unit control loop also comprises two air switch ZK, after described long-range switching circuit on the spot, closing circuit, sub-gate circuit, combined floodgate instruction loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop are connected in parallel, one end is connected to DC power supply bus by an air switch ZK
Positive pole, the other end are connected to the negative pole of DC power supply bus by another air switch ZK.
The power distribution network ring main unit control loop that the present invention has broken string function for monitoring has following advantage: the present invention is by increasing the broken string supervisory relay KA1 that closes a floodgate, separating brake broken string supervisory relay KA2, remote signalling contact DTU-YX003 and the on-the-spot indicator light YR of broken string, the broken string supervisory relay KA1 and separating brake broken string supervisory relay KA2 that closes a floodgate includes coil and two normally closed contacts, the coil of combined floodgate broken string supervisory relay KA1 and combined floodgate auxiliary relay KM1 often open auxiliary contact and are connected in parallel, the coil of separating brake broken string supervisory relay KA2 and separating brake auxiliary relay KM2 often open auxiliary contact and are connected in parallel, a normally closed contact KA1.1 of a combined floodgate broken string supervisory relay KA1 and normally closed contact KA2.1 of separating brake broken string supervisory relay KA2 and remote signalling contact DTU-YX003 broken string main website remote signalling in series loop, another normally closed contact KA1.2 of combined floodgate broken string supervisory relay KA1 and another normally closed contact KA2.2 of separating brake broken string supervisory relay KA2 and the on-the-spot indicator light YR of broken string broken string in series on-the-spot instruction loop, broken string on-the-spot instruction loop, broken string main website remote signalling loop is all connected in parallel with closing circuit, for power distribution network ring main unit control loop adds control loop template field monitor and distant place alarm function, give a distant place and two kinds of mode control loop abnormal conditions supervision methods on the spot innovatively, thoroughly solve at present for want of on-the-spot or distant place alarm signal cause tour personnel cannot Timeliness coverage a difficult problem for processing controls circuit defect.The information of control loop template is sent to power distribution automation main station system by remote signalling mode, for power distribution network dispatcher provides reliable basis to the supervision of control loop and straighforward operation, improve the correctness of power distribution network dispatcher straighforward operation, improve the practical operation key index of power distribution automation, in order to advance, national Distribution Automation Construction, power distribution network are intelligent, automatization level is significant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment of the present invention power distribution network ring main unit control loop.
Embodiment
As shown in Figure 1, the power distribution network ring main unit control loop that the present embodiment has broken string function for monitoring comprises the long-range on the spot switching circuit being connected in parallel to DC power supply bus, closing circuit, sub-gate circuit, close a floodgate and indicate loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop, be serially connected with combined floodgate auxiliary relay KM1 in closing circuit and often open auxiliary contact and closing coil HQ, be serially connected with separating brake auxiliary relay KM2 in sub-gate circuit and often open auxiliary contact and switching winding TQ, and the coil of combined floodgate auxiliary relay KM1, the coil of separating brake auxiliary relay KM2 is serially connected with on the spot in long-range switching circuit respectively, it is characterized in that: power distribution network ring main unit control loop also comprises the broken string supervisory relay KA1 that closes a floodgate, separating brake broken string supervisory relay KA2, remote signalling contact DTU-YX003 and the on-the-spot indicator light YR of broken string, the broken string supervisory relay KA1 and separating brake broken string supervisory relay KA2 that closes a floodgate includes coil and two normally closed contacts, the auxiliary relay KM1 that to close a floodgate in the coil of broken string supervisory relay KA1 and closing circuit of closing a floodgate often opens auxiliary contact and is connected in parallel, in the coil of separating brake broken string supervisory relay KA2 and sub-gate circuit, separating brake auxiliary relay KM2 often opens auxiliary contact and is connected in parallel, a normally closed contact KA1.1 of a combined floodgate broken string supervisory relay KA1 and normally closed contact KA2.1 of separating brake broken string supervisory relay KA2 and remote signalling contact DTU-YX003 broken string main website remote signalling in series loop, another normally closed contact KA1.2 of combined floodgate broken string supervisory relay KA1 and another normally closed contact KA2.2 of separating brake broken string supervisory relay KA2 and the on-the-spot indicator light YR of broken string broken string in series on-the-spot instruction loop, broken string on-the-spot instruction loop, broken string main website remote signalling loop is all connected in parallel with closing circuit.
In the present embodiment, on the spot long-range switching circuit comprise a distant place on the spot diverter switch SA, on the spot switch knob SB1, DTU control splice grafting point, on the spot opening button SB2, DTU and control tapping point and a switch auxiliary contact QF1, on the spot switch knob SB1, DTU control be connected to DC power supply bus after splice grafting point is connected in parallel the normally closed contact QF1.1 of rear one end successively by the coil of combined floodgate auxiliary relay KM1, a switch auxiliary contact QF1 negative pole, the other end then by the way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, on the spot opening button SB2, DTU control to be connected to after tapping point is connected in parallel the normal opened contact QF1.2 of rear one end successively by the coil of separating brake auxiliary relay KM2, a switch auxiliary contact QF1 negative pole of DC power supply bus, the other end then by another way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, self-sustaining contact one end that combined floodgate auxiliary relay KM1 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by the coil successively by combined floodgate auxiliary relay KM1, the negative pole of DC power supply bus is connected to after the normally closed contact QF1.1 of a switch auxiliary contact QF1, self-sustaining contact one end that separating brake auxiliary relay KM2 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by the coil successively by separating brake auxiliary relay KM2, the negative pole of DC power supply bus is connected to after the normal opened contact QF1.2 of a switch auxiliary contact QF1.A distant place on the spot diverter switch SA is used for switching a distant place/control on the spot, splice grafting point is controlled by switch knob SB1 or DTU on the spot, the coil of combined floodgate auxiliary relay KM1 obtains electric adhesive and realizes self-sustaining based on the retaining contact that combined floodgate auxiliary relay KM1 often opens auxiliary contact, combined floodgate auxiliary relay KM1 often opens auxiliary contact and closes, and closing coil HQ obtains electric adhesive and controls a switch combined floodgate.Tapping point is controlled by opening button SB2 on the spot or DTU, separating brake auxiliary relay KM2 obtains electric adhesive and realizes self-sustaining based on the retaining contact that separating brake auxiliary relay KM2 often opens auxiliary contact, separating brake auxiliary relay KM2 often opens auxiliary contact and closes, and switching winding TQ obtains electric adhesive and controls a switch separating brake.In the present embodiment, No. one time switch auxiliary contact QF1 comprises normally closed contact QF1.1 and normal opened contact QF1.2, occur in pairs in control loop, realize lock-in control logic function, the function of switch auxiliary contact QF2 ~ mono-No. a time switch auxiliary contact QF4 is identical with a switch auxiliary contact QF1, therefore is hereafter repeating no more.
In the present embodiment, be also provided with trip protection contact in sub-gate circuit, in trip protection contact and sub-gate circuit, often opening between auxiliary contact of separating brake auxiliary relay KM2 is connected in parallel.Trip protection contact is under circuit failure condition; distribution terminal (or protective device) exports tripping operation control command; realize trip protection function, the normal opened contact QF2.2 trip protection loop in series of trip protection contact, switching winding TQ, a switch auxiliary contact QF2.
In the present embodiment, closing circuit and sub-gate circuit are also connected with a switch auxiliary contact QF2 jointly, and the normally closed contact QF2.1 of a switch auxiliary contact QF2 is connected in series in closing circuit, the normal opened contact QF2.2 of a switch auxiliary contact QF2 is connected in series in sub-gate circuit.
In the present embodiment, close a floodgate and indicate loop to comprise combined floodgate indicator light HG, separating brake instruction loop comprises separating brake indicator light HR, close a floodgate and indicate loop, separating brake instruction loop to be also jointly connected with a switch auxiliary contact QF3, and the normally closed contact QF3.1 of a switch auxiliary contact QF3 is connected in series in combined floodgate instruction loop, the normal opened contact QF3.2 of a switch auxiliary contact QF3 is connected in series in separating brake instruction loop.
In the present embodiment, main website switching signal loop comprises remote signalling contact DTU-YX001, main website sub-gate signal loop comprises remote signalling contact DTU-YX002, main website switching signal loop and main website sub-gate signal loop are also connected with a switch auxiliary contact QF4 jointly, and the normally closed contact QF4.1 of a switch auxiliary contact QF4 is connected in series in main website switching signal loop, the normal opened contact QF4.2 of a switch auxiliary contact QF4 is connected in series in main website sub-gate signal loop.
In the present embodiment, power distribution network ring main unit control loop also comprises two air switch ZK, after long-range switching circuit, closing circuit, sub-gate circuit, combined floodgate instruction loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop are connected in parallel on the spot, one end is connected to by an air switch ZK positive pole of DC power supply bus, the other end to be connected to DC power supply bus negative pole by another air switch ZK.
See Fig. 1, the present embodiment comprises lower column circuits from top to bottom successively:
(1) combined floodgate keeps loop: the normally closed contact QF1.1 three combined floodgate in series of the self-sustaining contact of combined floodgate auxiliary relay KM1, the coil of combined floodgate auxiliary relay KM1, a switch auxiliary contact QF1 keeps loop.(2) closing circuit on the spot: the normally closed contact QF1.1 three of switch knob SB1, a switch auxiliary contact QF1 forms closing circuit on the spot on the spot.(3) remote control closing circuit: DTU controls the normally closed contact QF1.1 three remote control closing circuit in series of splice grafting point, a switch auxiliary contact QF1.(4) remote control sub-gate circuit: DTU controls the normal opened contact QF1.2 three remote control sub-gate circuit in series of tapping point, a switch auxiliary contact QF1.(5) sub-gate circuit on the spot: the normal opened contact QF1.2 three sub-gate circuit on the spot in series of opening button SB2, a switch auxiliary contact QF1 on the spot
.(6) separating brake keeps loop: the normal opened contact QF1.2 separating brake in series of the self-sustaining contact of separating brake auxiliary relay KM2, the coil of separating brake auxiliary relay KM2, a switch auxiliary contact QF1 keeps loop.(7) closing circuit: combined floodgate auxiliary relay KM1 often opens the normally closed contact QF2.1 closing circuit in series of auxiliary contact, closing coil HQ, a switch auxiliary contact QF2.(8) close a floodgate broken string monitoring circuit: normally closed contact QF2.1 combined floodgates in series of the coil of the broken string supervisory relay KA1 that closes a floodgate, closing coil HQ, a switch auxiliary contact QF2 breaks monitoring circuit (9) trip protection loop: the normal opened contact QF2.2 trip protection loop in series of trip protection contact, switching winding TQ, a switch auxiliary contact QF2.(10) sub-gate circuit: separating brake auxiliary relay KM2 often opens the normal opened contact QF2.2 sub-gate circuit in series of auxiliary contact, switching winding TQ, a switch auxiliary contact QF2.(11) separating brake broken string monitoring circuit: the normal opened contact QF2.2 separating brake broken string in series monitoring circuit of the coil of separating brake broken string supervisory relay KA1, switching winding TQ, a switch auxiliary contact QF2.(12) combined floodgate instruction loop: the normally closed contact QF3.1 combined floodgate instruction in series loop of combined floodgate indicator light HG, a switch auxiliary contact QF3; (13) separating brake instruction loop: the normal opened contact QF3.2 separating brake instruction in series loop of separating brake indicator light HR, a switch auxiliary contact QF3; (14) main website switching signal loop: the normally closed contact QF4.1 main website switching signal in series loop of remote signalling contact DTU-YX001, a switch auxiliary contact QF4; (15) main website sub-gate signal loop: the normal opened contact QF4.2 main website sub-gate signal in series loop of remote signalling contact DTU-YX002, a switch auxiliary contact QF4.(16) broken string main website remote signalling loop: a normally closed contact KA1.1 of the broken string supervisory relay KA1 that closes a floodgate an and normally closed contact KA2.1 of separating brake broken string supervisory relay KA2 and remote signalling contact DTU-YX003 broken string main website remote signalling in series loop.(17) broken string on-the-spot instruction loop: another normally closed contact KA1.2 of the broken string supervisory relay KA1 that closes a floodgate and another normally closed contact KA2.2 of separating brake broken string supervisory relay KA2 and instruction loop, the on-the-spot indicator light YR of broken string broken string scene in series.In above-mentioned loop, the broken string monitoring circuit that closes a floodgate, separating brake broken string monitoring circuit, broken string on-the-spot instruction loop, broken string loop, four, main website remote signalling loop are the Key Circuit that the present embodiment monitors for realizing power distribution network ring main unit broken string.
The operation principle that the present embodiment has the power distribution network ring main unit control loop of broken string function for monitoring is as follows: in normal operation, when a switch is in open position, in closing circuit, the normally closed contact QF2.1 of a switch auxiliary contact QF2 closes, the coil of combined floodgate broken string supervisory relay KA1 obtains electric, the separating brake indicator light HR in separating brake instruction loop is bright, when a switch is in closing position, in closing circuit, the normal opened contact QF2.2 of a switch auxiliary contact QF2 closes, the coil of separating brake broken string supervisory relay KA2 obtains electric, close a floodgate and indicate the separating brake indicator light HG in loop bright.When there is sub-gate circuit or closing circuit broken string, combined floodgate broken string supervisory relay KA1, the whole dead electricity of separating brake broken string supervisory relay KA2, the break normally closed contact (KA2.1 and KA2.2) of supervisory relay KA2 of the normally closed contact (KA1.1 and KA1.2) of broken string supervisory relay KA1 and separating brake that closes a floodgate is all closed, the on-the-spot indicator light YR of broken string in broken string on-the-spot instruction loop is bright, separating brake indicator light HQ and combined floodgate indicator light HR all extinguishes, thus can Monitor and Control circuit breaking situation at the scene.Simultaneously, the normally closed contact KA2.2 of combined floodgate broken string supervisory relay KA1 normally closed contact KA1.2, separating brake broken string supervisory relay KA2 connects access remote signalling contact DTU-YX003 as control loop template signal, upload control loop template alarm signal to distribution main website by remote signalling contact DTU-YX003, main website can receive control loop template alarm.Therefore, the combined floodgate broken string monitoring circuit increased by the present embodiment, separating brake broken string monitoring circuit, broken string on-the-spot instruction loop, broken string loop, four, main website remote signalling loop, control loop template field monitor and distant place alarm can be increased, effective supervision means can be provided for power distribution network operations staff to the tour of ring main unit scene, for power distribution network dispatcher provides reliable judgement to the supervision of control loop and straighforward operation, improve auxiliary tone personnel to the success rate of ring main unit straighforward operation.
It should be noted that, in the present embodiment, the numbering DTU-YX001 ~ DTU-YX003 of remote signalling contact is only used for distinguishing different remote signalling contacts, and should not be understood to the model of remote signalling contact, the remote signalling contact of numbering DTU-YX001 ~ DTU-YX003 is for communicating with distribution main website.Certainly, those skilled in the art can select to realize the remote signalling contact of various model that alarm signal uploads and specification as required, do not repeat them here.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. one kind has the power distribution network ring main unit control loop of broken string function for monitoring, comprise the long-range on the spot switching circuit being connected in parallel to DC power supply bus, closing circuit, sub-gate circuit, close a floodgate and indicate loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop, be serially connected with combined floodgate auxiliary relay KM1 in described closing circuit and often open auxiliary contact and closing coil HQ, be serially connected with separating brake auxiliary relay KM2 in described sub-gate circuit and often open auxiliary contact and switching winding TQ, and the coil of combined floodgate auxiliary relay KM1, the coil of separating brake auxiliary relay KM2 is serially connected with on the spot in long-range switching circuit respectively, it is characterized in that: described power distribution network ring main unit control loop also comprises the broken string supervisory relay KA1 that closes a floodgate, separating brake broken string supervisory relay KA2, remote signalling contact DTU-YX003 and the on-the-spot indicator light YR of broken string, described combined floodgate broken string supervisory relay KA1 and separating brake broken string supervisory relay KA2 includes coil and two normally closed contacts, the auxiliary relay KM1 that closes a floodgate in the coil of the described broken string supervisory relay KA1 that closes a floodgate and closing circuit often opens auxiliary contact and is connected in parallel, in the coil of described separating brake broken string supervisory relay KA2 and sub-gate circuit, separating brake auxiliary relay KM2 often opens auxiliary contact and is connected in parallel, a normally closed contact KA1.1 of the described broken string supervisory relay KA1 that closes a floodgate an and normally closed contact KA2.1 of separating brake broken string supervisory relay KA2 and remote signalling contact DTU-YX003 broken string main website remote signalling in series loop, another normally closed contact KA1.2 of the described broken string supervisory relay KA1 that closes a floodgate and another normally closed contact KA2.2 of separating brake broken string supervisory relay KA2 and instruction loop, the on-the-spot indicator light YR of broken string broken string scene in series, instruction loop, described broken string scene, broken string main website remote signalling loop is all connected in parallel with closing circuit.
2. the power distribution network ring main unit control loop with broken string function for monitoring according to claim 1, it is characterized in that: described long-range switching circuit on the spot comprises distant place diverter switch SA on the spot, switch knob SB1 on the spot, DTU controls splice grafting point, opening button SB2 on the spot, DTU controls tapping point and a switch auxiliary contact QF1, the described SB1 of switch knob on the spot, DTU is controlled splice grafting point and is connected in parallel rear one end successively by the coil of combined floodgate auxiliary relay KM1, the negative pole of DC power supply bus is connected to after the normally closed contact QF1.1 of a switch auxiliary contact QF1, the other end then by the way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, described opening button SB2 on the spot, DTU control to be connected to after tapping point is connected in parallel the normal opened contact QF1.2 of rear one end successively by the coil of separating brake auxiliary relay KM2, a switch auxiliary contact QF1 negative pole of DC power supply bus, the other end then by another way switch expanding channels of distant place diverter switch SA on the spot to the positive pole of DC power supply bus, self-sustaining contact one end that combined floodgate auxiliary relay KM1 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by the coil successively by combined floodgate auxiliary relay KM1, the negative pole of DC power supply bus is connected to after the normally closed contact QF1.1 of a switch auxiliary contact QF1, self-sustaining contact one end that separating brake auxiliary relay KM2 often opens auxiliary contact is connected with the positive pole of DC power supply bus, the other end is by the coil successively by separating brake auxiliary relay KM2, the negative pole of DC power supply bus is connected to after the normal opened contact QF1.2 of a switch auxiliary contact QF1.
3. the power distribution network ring main unit control loop with broken string function for monitoring according to claim 2; it is characterized in that: be also provided with trip protection contact in described sub-gate circuit, in described trip protection contact and sub-gate circuit, often opening between auxiliary contact of separating brake auxiliary relay KM2 is connected in parallel.
4. the power distribution network ring main unit control loop with broken string function for monitoring according to claim 3, it is characterized in that: described closing circuit and sub-gate circuit are also connected with a switch auxiliary contact QF2 jointly, and the normally closed contact QF2.1 of a described switch auxiliary contact QF2 is connected in series in closing circuit, the normal opened contact QF2.2 of a described switch auxiliary contact QF2 is connected in series in sub-gate circuit.
5. the power distribution network ring main unit control loop with broken string function for monitoring according to claim 4, it is characterized in that: described combined floodgate instruction loop comprises combined floodgate indicator light HG, described separating brake instruction loop comprises separating brake indicator light HR, described combined floodgate instruction loop, separating brake instruction loop are also connected with a switch auxiliary contact QF3 jointly, and the normally closed contact QF3.1 of a described switch auxiliary contact QF3 is connected in series in combined floodgate instruction loop, the normal opened contact QF3.2 of a described switch auxiliary contact QF3 is connected in series in separating brake instruction loop.
6. the power distribution network ring main unit control loop with broken string function for monitoring according to claim 5, it is characterized in that: described main website switching signal loop comprises remote signalling contact DTU-YX001, main website sub-gate signal loop comprises remote signalling contact DTU-YX002, described main website switching signal loop and main website sub-gate signal loop are also connected with a switch auxiliary contact QF4 jointly, and the normally closed contact QF4.1 of a described switch auxiliary contact QF4 is connected in series in main website switching signal loop, the normal opened contact QF4.2 of a described switch auxiliary contact QF4 is connected in series in main website sub-gate signal loop.
7. according to the power distribution network ring main unit control loop with broken string function for monitoring in claim 1 ~ 6 described in any one, it is characterized in that: described power distribution network ring main unit control loop also comprises two air switch ZK, after described long-range switching circuit on the spot, closing circuit, sub-gate circuit, combined floodgate instruction loop, separating brake instruction loop, main website switching signal loop and main website sub-gate signal loop are connected in parallel, one end is connected to by an air switch ZK positive pole of DC power supply bus, the other end to be connected to DC power supply bus negative pole by another air switch ZK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222853.4A CN104882795B (en) | 2015-05-05 | 2015-05-05 | Power distribution network ring main unit control circuit having broken line monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222853.4A CN104882795B (en) | 2015-05-05 | 2015-05-05 | Power distribution network ring main unit control circuit having broken line monitoring function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104882795A true CN104882795A (en) | 2015-09-02 |
| CN104882795B CN104882795B (en) | 2017-01-11 |
Family
ID=53950182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510222853.4A Active CN104882795B (en) | 2015-05-05 | 2015-05-05 | Power distribution network ring main unit control circuit having broken line monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104882795B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884521A (en) * | 2019-03-28 | 2019-06-14 | 山东钢铁股份有限公司 | A kind of circuit-breaker switching on-off control loop template monitoring, alarming circuit |
| CN110146773A (en) * | 2019-06-20 | 2019-08-20 | 广东电网有限责任公司 | A kind of monitoring of control loop and fault coverage judgement system |
| CN110514961A (en) * | 2019-08-27 | 2019-11-29 | 宁波天安（集团）股份有限公司 | Ring network cabinet fault monitoring control device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB221658A (en) * | 1923-10-09 | 1924-09-18 | Westinghouse Electric & Mfg Co | Improvements relating to remote control systems for electric substations |
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High voltage circuit short-circuit fault protector |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | On-off coil protector for circuit breaker |
| CN103515921A (en) * | 2013-09-25 | 2014-01-15 | 国家电网公司 | Online protection circuit of high-voltage breaker opening/closing coil and protection method thereof |
| CN203850926U (en) * | 2014-05-29 | 2014-09-24 | 国家电网公司 | Modular intelligent operating loop of high-voltage breaker |
| CN204012928U (en) * | 2014-06-30 | 2014-12-10 | 国家电网公司 | A kind of 10kV handcart type high voltage switch cabinet separating brake monitoring circuit |
| CN204065311U (en) * | 2014-10-15 | 2014-12-31 | 新疆特变电工自控设备有限公司 | The aobvious device of switch behaviour of monitoring switch control loop template |
-
2015
- 2015-05-05 CN CN201510222853.4A patent/CN104882795B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB221658A (en) * | 1923-10-09 | 1924-09-18 | Westinghouse Electric & Mfg Co | Improvements relating to remote control systems for electric substations |
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High voltage circuit short-circuit fault protector |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | On-off coil protector for circuit breaker |
| CN103515921A (en) * | 2013-09-25 | 2014-01-15 | 国家电网公司 | Online protection circuit of high-voltage breaker opening/closing coil and protection method thereof |
| CN203850926U (en) * | 2014-05-29 | 2014-09-24 | 国家电网公司 | Modular intelligent operating loop of high-voltage breaker |
| CN204012928U (en) * | 2014-06-30 | 2014-12-10 | 国家电网公司 | A kind of 10kV handcart type high voltage switch cabinet separating brake monitoring circuit |
| CN204065311U (en) * | 2014-10-15 | 2014-12-31 | 新疆特变电工自控设备有限公司 | The aobvious device of switch behaviour of monitoring switch control loop template |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884521A (en) * | 2019-03-28 | 2019-06-14 | 山东钢铁股份有限公司 | A kind of circuit-breaker switching on-off control loop template monitoring, alarming circuit |
| CN109884521B (en) * | 2019-03-28 | 2024-03-12 | 山东钢铁股份有限公司 | Circuit breaker divide-shut brake control circuit broken wire monitoring alarm circuit |
| CN110146773A (en) * | 2019-06-20 | 2019-08-20 | 广东电网有限责任公司 | A kind of monitoring of control loop and fault coverage judgement system |
| CN110514961A (en) * | 2019-08-27 | 2019-11-29 | 宁波天安（集团）股份有限公司 | Ring network cabinet fault monitoring control device |
| CN110514961B (en) * | 2019-08-27 | 2023-12-08 | 宁波天安（集团）股份有限公司 | Ring main unit fault monitoring control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104882795B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105305620B (en) | A kind of breaker closing control loop template monitoring system | |
| Coster et al. | Self healing distribution networks using smart controllers | |
| CN102611082B (en) | Self-adaptive feeder neighborhood interactive fault-tolerant relay protection method for power distribution network | |
| CN104882795A (en) | Power distribution network ring main unit control circuit having broken line monitoring function | |
| CN104122790A (en) | Cooling system | |
| CN106487004B (en) | One electrical secondary system of intelligent substation runs hidden danger Intelligent drainage checking method | |
| CN205389136U (en) | Cable branch case standard management system | |
| CN103643854A (en) | System and method for controlling bus rapid transit (BRT) safety door | |
| CN106655463A (en) | Safety anti-misoperation and sound-light alarm integrated logic system applied to voltage paralleling device | |
| CN102565632A (en) | Automatically-connected remote control grounded line disconnection and selection working method for low-current system | |
| CN204633475U (en) | Based on the dual-channels communication system of transmission line on-line monitoring | |
| CN202550668U (en) | Distributed power distribution network management terminal | |
| CN105896473A (en) | Open-phase protection device having a function of multi-redundancy intelligent carried charge display and control method of open-phase protection device | |
| CN207166224U (en) | Switch cubicle control circuit on-line monitoring system | |
| CN109950883A (en) | Protection supervisory equipment and protection investigating method for distribution network automated switch | |
| CN209608335U (en) | A kind of protection supervisory equipment for distribution network automated switch | |
| CN202679073U (en) | HP-9000 type switching station fault processing system | |
| CN204424881U (en) | A kind of SF 6circuit breaker monitoring system | |
| CN102590712B (en) | Fast acting fuse-based detection and positioning device and method thereof | |
| CN202888959U (en) | High and low-voltage transformer station control system apparatus | |
| CN205070616U (en) | Supervision return circuit of trip(ping) circuit | |
| CN204538823U (en) | A kind of step hydropower station is unattended and remote central control | |
| CN203871927U (en) | Breaker remote operation function monitoring device | |
| CN202333998U (en) | Intelligent recloser | |
| CN104701821A (en) | SF6 circuit breaker monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |