CN216209698U - Control loop for bilateral circulating running-in test of GIS three-station mechanism - Google Patents
Control loop for bilateral circulating running-in test of GIS three-station mechanism Download PDFInfo
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- CN216209698U CN216209698U CN202122503224.2U CN202122503224U CN216209698U CN 216209698 U CN216209698 U CN 216209698U CN 202122503224 U CN202122503224 U CN 202122503224U CN 216209698 U CN216209698 U CN 216209698U
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Abstract
The utility model belongs to the technical field of power equipment, and discloses a control loop for bilateral circulating running-in test of a GIS three-station mechanism, which comprises a monitoring branch and a circulating control branch which are connected in parallel, wherein two ends of the monitoring branch and the circulating control branch are connected with a power supply; the circulation control branch comprises an isolation control branch, a grounding control branch, an abnormal cutting-off branch and a counting branch which are connected in parallel, the isolation control branch and the grounding control branch are used for controlling the switching-on and switching-off operations of an isolation switch and a grounding switch by controlling a change-over switch of a plurality of relays, the abnormal cutting-off branch is used for cutting off the electrification of a control system by detecting the abnormal state of a driving coil auxiliary switch corresponding to the isolation switch and the grounding switch, and the counting branch is used for counting by taking the sequential switching-on and switching-off of the isolation switch and the grounding switch as a circulation.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to a control loop for bilateral circulating running-in test of a GIS three-station mechanism.
Background
GIS is the English abbreviation of gas insulated totally closed combined electrical apparatus, by circuit breaker, isolator, earthing switch, mutual-inductor, arrester, generating line etc. and make up, these equipment or part are all enclosed in the metal grounded shell, fill with SF6 insulating gas of certain pressure in its inside, so also call SF6 totally closed combined electrical apparatus, wherein three-station mechanism is its core component, the break-in test to isolator, earthing knife-switch in the three-station mechanism at present is mostly unilateral test, still need tester to monitor the test state constantly simultaneously, waste time and energy, the measuring efficiency is very low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a control loop for bilateral circulating running-in test of a GIS three-station mechanism, which solves the technical problems that most of the existing test methods are unilateral test, time and labor are wasted, the measurement efficiency is very low, and the like.
The utility model can be realized by the following technical scheme:
a control loop for bilateral circulation running-in test of a GIS three-station mechanism comprises a monitoring branch and a circulation control branch which are connected in parallel, wherein two ends of the monitoring branch and the circulation control branch are connected with a power supply, the monitoring branch is used for detecting the states of auxiliary switches of the opening and closing states of an isolating switch and a grounding switch and starting the circulation control branch;
the circulation control branch comprises an isolation control branch, a grounding control branch, an abnormal cut-off branch and a counting branch which are connected in parallel, the isolation control branch and the grounding control branch are used for controlling the switching-on and switching-off operations of an isolation switch and a grounding switch by controlling a change-over switch of a plurality of relays, the abnormal cut-off branch is used for cutting off the electrification of a control system by detecting the abnormal state of a driving coil auxiliary switch corresponding to the isolation switch and the grounding switch, and the counting branch is used for counting by taking the sequential switching-on and switching-off of the isolation switch and the grounding switch as a circulation, so that the automatic bilateral circulation running-in test of the GIS three-station mechanism is realized.
Further, the isolation control branch comprises a time relay KT1, the normally closed point of the time relay KT1 is connected with the closing control circuit of the isolating switch through the mechanical part of an intermediate relay ZJ2, the normally open point of the time relay KT1 is connected with the opening control circuit of the isolating switch through the normally closed point of the time relay KT2,
the grounding control branch comprises an intermediate relay KT3, the normally closed point of the time relay KT3 is connected with the closing control circuit of the grounding switch through the mechanical part of the intermediate relay ZJ1, the normally open point of the time relay KT3 is connected with the opening control circuit of the grounding switch, the control part of the intermediate relay ZJ1 is connected with the normally open point of the time relay KT2, the mechanical part of the intermediate relay ZJ1 is also connected with the control part of the time relay KT3,
the control part of the intermediate relay ZJ2 is connected with a monitoring branch,
the count branch road includes counter PC, counter PC is connected with time relay KT 4's normally open point, time relay KT 4's control part is connected with time relay KT 3's normally open point, and its normally closed point is connected with time relay KT 1's control part through intermediate relay ZJ 2's mechanical part, still is connected with time relay KT 1's control part through time relay KT 2's normally open point.
Furthermore, the monitoring branch comprises a time relay KT5, the control part of the time relay KT5 is connected with an auxiliary switch in a switching-on/off state, the mechanical part of the time relay KT is connected with the control part of an intermediate relay ZJ2,
the circulation control branch circuit further comprises a circulation indicating branch circuit, the circulation indicating branch circuit comprises an indicating lamp PI, and the indicating lamp PI is connected with the mechanical part of the intermediate relay ZJ 2.
Further, the unusual branch circuit that cuts off includes time relay KT6, time relay KT 6's control part and isolator, the drive coil auxiliary switch that earthing switch corresponds are connected, and its normally open point is connected with auxiliary relay ZJ 3's control part, auxiliary relay ZJ 3's mechanical part is connected with the power, still is connected with pilot lamp PI3, pilot lamp PI3 is used for instructing abnormal state, time relay KT 6's timing setting is greater than time relay KT1-KT 4's timing setting.
Further, the circulation control branch circuit also includes a closing indication branch circuit, the closing indication branch circuit includes an indicator light PI1 and an indicator light PI2, the indicator light PI1 is connected with the auxiliary switch of the on-off state of the disconnecting switch for indicating the isolated closing state, and the indicator light PI2 is connected with the auxiliary switch of the on-off state of the grounding switch for indicating the grounded closing state.
The beneficial technical effects of the utility model are as follows:
a control loop is built through a plurality of time relays and intermediate relays, running-in tests of alternate circulating opening and closing of the isolation disconnecting link and the grounding disconnecting link of the three-station mechanism are realized, and meanwhile, the recording of circulating running-in times is completed by matching with a counter; then with the help of the control circuit that the cooperation of the primary node of the on-off state auxiliary switch and the driving coil auxiliary switch in the three-station mechanism isolation side and the grounding side mechanism was built with time relay and relay, realize the shutting function to whole alternate cycle break-in circuit, reach functions such as divide the detection of closing anomaly, result instruction, thereby can protect the product, equipment and operating personnel's safety, one can operate, need not operating personnel and keep watch on the break-in process always, can control many three-station mechanisms simultaneously and break-in, convenient and fast, greatly reduced the input of manpower resources in practical application, and the required equipment input of three-station mechanism break-in, production efficiency has been promoted. In addition, the whole structure is simple, the realization is convenient, and the applicability is stronger.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 and 3 are enlarged schematic views of a part of the circuit of fig. 1 according to the present invention.
Detailed Description
The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.
As shown in fig. 1-3, the present invention provides a control loop for bilateral circulation break-in test of a GIS three-station mechanism, comprising a monitoring branch and a circulation control branch which are connected in parallel, wherein two ends of the monitoring branch are connected with a power supply, the monitoring branch is used for detecting the states of the auxiliary switch of the on-off state of the disconnecting switch and the grounding switch, and starting the circulation control branch; the circulation control branch comprises isolation control branches connected in parallel, a grounding control branch, an abnormal cut-off branch and a counting branch, wherein the isolation control branches and the grounding control branch are all used for controlling an isolating switch by controlling a change-over switch of a plurality of relays, the switching-on and switching-off operations of the grounding switch, the abnormal cut-off branch is used for counting by detecting the abnormal state of a driving coil auxiliary switch corresponding to the isolating switch and the grounding switch and switching-off the control system, and the counting branch is used for counting by taking the isolating switch and the grounding switch as a circulation, so that the automatic bilateral circulation running-in test of the GIS three-station mechanism is realized. Therefore, bilateral circulating running-in tests of the isolating switch and the grounding switch in the GIS three-station mechanism are automatically completed by the aid of the monitoring branch and the circulating control branch, a tester is not required to monitor the test state all the time, manpower and material resources are saved, the intelligent level of the tests is improved, and the production requirements of modernization can be met.
Specifically, the isolation control branch comprises a time relay KT1, the normally closed point of the time relay KT1 is connected with the closing control circuit of the isolation switch through the mechanical part of an intermediate relay ZJ2, the normally open point of the time relay KT1 is connected with the opening control circuit of the isolation switch through the normally closed point of the time relay KT2,
the grounding control branch comprises an intermediate relay KT3, the normally closed point of the time relay KT3 is connected with the closing control circuit of the grounding switch through the mechanical part of the intermediate relay ZJ1, the normally open point of the time relay KT is connected with the opening control circuit of the grounding switch,
the control part of the intermediate relay ZJ1 is connected with the normally open point of the time relay KT2, the mechanical part of the intermediate relay ZJ1 is also connected with the control part of the time relay KT3, the mechanical part and the control part form independent parallel branches respectively to realize the transition control of the opening and closing operations of the isolating switch and the grounding switch,
the control unit of the intermediate relay ZJ2 is connected to a monitoring branch,
this count branch road includes counter PC, this counter PC is connected with time relay KT 4's the normally open point, this time relay KT 4's the control part is connected with time relay KT 3's the normally open point, realize the count operation after a circulation, this time relay KT 4's normally closed point is connected with time relay KT 1's the control part through intermediate relay ZJ 2's mechanical part, still the normally open point through time relay KT1 is connected with time relay KT 2's control part, with the realization to time relay KT1, time relay KT 2's reset operation, do preparation for next circulation divide-shut brake operation.
This monitoring branch road includes time relay KT5, this time relay KT 5's control part is connected with divide-shut brake state auxiliary switch, its mechanical part is connected with auxiliary relay ZJ 2's control part, because this divide-shut brake state auxiliary switch is at isolator, when earthing switch accomplishes the separating brake operation, be in the normally closed state, when accomplishing the closing operation, be in normally open state, be the inside monitoring mechanism of GIS switch, therefore, after a circulation is accomplished, two divide-shut brake state auxiliary switch should all be in the normally closed state, accomplish the start-up of circulation control branch road through the monitoring to this state, it is very convenient.
This circulation control branch road still includes the circulation and indicates the branch road, this circulation is instructed the branch road and is included pilot lamp PI, this pilot lamp PI is connected with auxiliary relay ZJ 2's mechanical part, still include closing an floodgate and indicates the branch road, this closing an floodgate indicates the branch road and includes pilot lamp PI1 and pilot lamp PI2, this pilot lamp PI1 is connected with isolator's divide-shut brake state auxiliary switch, be used for instructing the isolation state of closing a floodgate, this pilot lamp PI2 is connected with earthing switch's divide-shut brake state auxiliary switch, be used for instructing ground connection state of closing a floodgate, make things convenient for the tester to observe control circuit's state at any time.
The abnormal cutoff branch comprises a time relay KT6, a control part of the time relay KT6 is connected with a driving coil auxiliary switch corresponding to a disconnecting switch and a grounding switch, a normally open point of the time relay KT is connected with a control part of an intermediate relay ZJ3, a mechanical part of the intermediate relay ZJ3 is connected with a power supply and is also connected with an indicator lamp PI3, the indicator lamp PI3 is used for indicating an abnormal state, and the timing setting of the time relay KT6 is larger than that of the time relays KT1-KT 4. Because the opening and closing of the GIS switch are driven by the electromagnetic coils, if the isolating switch and the grounding switch can be executed in the specified time, the corresponding driving coil auxiliary switches are in the off state, therefore, the timing setting of the time relay KT6 is larger than that of the time relays KT1-KT4, wherein the timing setting of the time relays KT 1-4 is the time required by the normal opening and closing operation of the isolating switch and the grounding switch, and the abnormal detection of the halving and closing can be completed.
When the control loop is used for running-in test, the process is as follows:
1. switching on the miniature circuit breakers DK1 and DK2, wherein DK1 is a master switch of a whole control circuit, and DK2 is a master switch of a motor driving circuit of a disconnecting switch and an earthing switch in a GIS;
2. after the power supply is switched on, the DS1 and the ES1 are both in opening and closing positions at the moment, the DS1 and the ES1 opening and closing state auxiliary switches in the monitoring branch circuits are at normal closing points, the time relay KT5 is started to time, the intermediate relay ZJ2 is started after 20s, the ZJ2 assists in node position switching, the circulating operation state indicator lamp is turned on to be green, and the control loop is allowed to circulate;
3. the position of an auxiliary node of the intermediate relay is switched, a closing loop of a disconnecting switch DS1 is switched on, DS1 starts closing, after DS1 is closed in place, the auxiliary switch in a closing and opening state is a normally closed point, PI1 lights a green lamp, and meanwhile, a time relay KT1 starts timing;
4. after the time relay KT1 times for 15s, KT1 assists the node position switching, a DS1 closing loop is switched off, a DS1 opening loop is switched on, DS1 starts opening, and meanwhile, the time relay KT2 starts timing;
5. the time relay KT2 starts an intermediate relay ZJ1 after timing for 15s, the ZJ1 assists the node position switching, an ES1 closing loop is switched on, ES1 starts closing, ES1 is closed in place, an opening and closing state auxiliary switch is a normally closed point, PI2 lights a green light, and the time relay KT3 starts timing;
6. after the time relay KT3 times for 15s, KT3 assists the node position switching, an ES1 closing loop is disconnected, an ES1 opening loop is connected, ES1 starts opening, and meanwhile, the time relay KT4 starts timing;
7. a time relay KT4 starts a counter PC after timing for 15s, and the counter PC counts once;
8. after one cycle is finished, DS1 and ES1 are both in a brake-off state, at the moment, the brake-off position auxiliary switches of DS1 and ES1 in the tool monitoring loop are normally closed points, a time relay KT5 is started to time, an intermediate relay ZJ2 is started after 20s, the position of a ZJ2 auxiliary node is switched, a cycle operation state indicator lamp is turned on, and the tool is allowed to perform the next cycle operation;
9. when DS1 or ES1 is in the process of opening and closing action, or DS1 or ES1 is in a half-opening and half-closing state due to fault, the auxiliary node of the opening and closing coil in the action process in the mechanism is normally opened and normally closed, a time relay KT6 and a time relay KT6 are started to time, if DS1 or ES1 is normally opened and closed in place within 15s, the auxiliary node of the opening and closing coil is normally closed and normally opened, a locking control circuit is powered off, the time relay KT6 stops timing, and when DS1 or ES1 is in the half-opening and half-closing state due to fault exceeds 20s, the time relay KT6 starts an intermediate relay ZJ3 after timing for 20s, the auxiliary node position of ZJ3 is switched, a PI3 red light is started to give an alarm, and the whole control circuit is cut off.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is therefore defined by the appended claims.
Claims (5)
1. The utility model provides a control circuit that is used for two side circulation break-in tests of three station mechanisms of GIS which characterized in that: the circuit comprises a monitoring branch circuit and a circulating control branch circuit which are connected in parallel, wherein two ends of the monitoring branch circuit and the circulating control branch circuit are connected with a power supply, the monitoring branch circuit is used for detecting the states of opening and closing state auxiliary switches of an isolating switch and a grounding switch, and starting the circulating control branch circuit;
the circulation control branch comprises an isolation control branch, a grounding control branch, an abnormal cut-off branch and a counting branch which are connected in parallel, the isolation control branch and the grounding control branch are used for controlling the switching-on and switching-off operations of an isolation switch and a grounding switch by controlling a change-over switch of a plurality of relays, the abnormal cut-off branch is used for cutting off the electrification of a control system by detecting the abnormal state of a driving coil auxiliary switch corresponding to the isolation switch and the grounding switch, and the counting branch is used for counting by taking the sequential switching-on and switching-off of the isolation switch and the grounding switch as a circulation, so that the automatic bilateral circulation running-in test of the GIS three-station mechanism is realized.
2. The control loop for the bilateral cycle running-in test of the GIS three-station mechanism according to claim 1, characterized in that: the isolation control branch comprises a time relay KT1, the normally closed point of the time relay KT1 is connected with the closing control circuit of the isolating switch through the mechanical part of an intermediate relay ZJ2, the normally open point of the time relay KT1 is connected with the opening control circuit of the isolating switch through the normally closed point of the time relay KT2,
the grounding control branch comprises an intermediate relay KT3, the normally closed point of the time relay KT3 is connected with the closing control circuit of the grounding switch through the mechanical part of the intermediate relay ZJ1, the normally open point of the time relay KT3 is connected with the opening control circuit of the grounding switch, the control part of the intermediate relay ZJ1 is connected with the normally open point of the time relay KT2, the mechanical part of the intermediate relay ZJ1 is also connected with the control part of the time relay KT3,
the control part of the intermediate relay ZJ2 is connected with a monitoring branch,
the count branch road includes counter PC, counter PC is connected with time relay KT 4's normally open point, time relay KT 4's control part is connected with time relay KT 3's normally open point, and its normally closed point is connected with time relay KT 1's control part through intermediate relay ZJ 2's mechanical part, still is connected with time relay KT 2's control part through time relay KT 1's normally open point.
3. The control loop for the bilateral cycle running-in test of the GIS three-station mechanism according to claim 2, characterized in that: the monitoring branch comprises a time relay KT5, the control part of the time relay KT5 is connected with an auxiliary switch in a switching-on/off state, the mechanical part of the time relay KT is connected with the control part of an intermediate relay ZJ2,
the circulation control branch circuit further comprises a circulation indicating branch circuit, the circulation indicating branch circuit comprises an indicating lamp PI, and the indicating lamp PI is connected with the mechanical part of the intermediate relay ZJ 2.
4. The control loop for the bilateral cycle running-in test of the GIS three-station mechanism according to claim 2, characterized in that: the unusual branch circuit that cuts off includes time relay KT6, the drive coil auxiliary switch that time relay KT 6's control part and isolator, earthing switch correspond is connected, and its normally open point is connected with auxiliary relay ZJ 3's control part, auxiliary relay ZJ 3's mechanical part is connected with the power, still is connected with pilot lamp PI3, pilot lamp PI3 is used for instructing abnormal state, time relay KT 6's timing setting is greater than time relay KT1-KT 4's timing setting.
5. The control loop for the bilateral cycle running-in test of the GIS three-station mechanism according to claim 1, characterized in that: the circulation control branch circuit further comprises a closing indication branch circuit, the closing indication branch circuit comprises an indicator light PI1 and an indicator light PI2, the indicator light PI1 is connected with the auxiliary switch of the opening and closing state of the isolating switch and used for indicating the isolating and closing state, and the indicator light PI2 is connected with the auxiliary switch of the opening and closing state of the grounding switch and used for indicating the grounding and closing state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122503224.2U CN216209698U (en) | 2021-10-18 | 2021-10-18 | Control loop for bilateral circulating running-in test of GIS three-station mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122503224.2U CN216209698U (en) | 2021-10-18 | 2021-10-18 | Control loop for bilateral circulating running-in test of GIS three-station mechanism |
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| CN216209698U true CN216209698U (en) | 2022-04-05 |
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| CN202122503224.2U Active CN216209698U (en) | 2021-10-18 | 2021-10-18 | Control loop for bilateral circulating running-in test of GIS three-station mechanism |
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