CN210775698U - Quick detection device of electric interlocking trouble of transformer substation - Google Patents
Quick detection device of electric interlocking trouble of transformer substation Download PDFInfo
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- CN210775698U CN210775698U CN201921427660.2U CN201921427660U CN210775698U CN 210775698 U CN210775698 U CN 210775698U CN 201921427660 U CN201921427660 U CN 201921427660U CN 210775698 U CN210775698 U CN 210775698U
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 238000012806 monitoring device Methods 0.000 claims description 45
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 30
- 230000007246 mechanism Effects 0.000 description 12
- 238000002955 isolation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012031 short term test Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model relates to a transformer substation monitoring technology field, in particular to quick detection device of electrical interlocking trouble of transformer substation. The utility model discloses a shutting state monitoring arrangement A includes a plurality of sampling measurement points, the empty state information that opens of motor power among the different interlocking circuit of measurement point collection, shutting state monitoring arrangement A's every sampling measurement point sets up the pilot lamp, shutting state monitoring arrangement B includes five measurement points, A, B, C three measurement points are connected with the empty opening of motor power that corresponds respectively, self-sustaining and shutting node correspond the empty opening of power with the self-sustaining power in return circuit and shutting power node respectively and are connected, shutting state monitoring arrangement B's every sampling measurement point sets up the pilot lamp. The utility model discloses a maintainer provides reliable and accurate fault information, and then improves power supply security, reliability.
Description
Technical Field
The utility model relates to a transformer substation monitoring technology field, in particular to quick detection device of electrical interlocking trouble of transformer substation.
Background
With the vigorous development of the power internet of things technology and the continuous improvement of the intelligent level of a modern transformer substation, the switching operation of the transformer substation becomes the most frequent operation for changing the operation mode of the transformer substation, and the reliability of the switching operation becomes an important ring of the power supply reliability and the operation safety of the modern transformer substation. In order to prevent misoperation of operation and maintenance personnel of a transformer substation, an isolation (grounding) switch has to have a perfect misoperation prevention function and mainly comprises two parts, namely mechanical locking and electrical interlocking, wherein the latter is indispensable.
The misoperation prevention of the transformer substation has double requirements, namely, logical locking is required to be realized in the electrical equipment across the interval besides mechanical and electrical locking in the interval, so that the risk of misoperation is further reduced. The operation method of operation and maintenance personnel and the quality of the electric secondary components directly determine the smooth implementation of the electric operation of the isolation (grounding) switch. At present, a transformer substation does not have the function of monitoring an electric operation locking loop of an isolation (grounding) switch, if an operation and maintenance worker cannot drive the isolation (grounding) switch in the operation process, the power supply reliability is reduced, and the safety risk of manually operating the isolation (grounding) switch is further increased. Under the condition, the maintenance personnel are required to arrive at the site for treatment, and due to the lack of an electric operation locking loop monitoring means of the isolating (grounding) switch, the operation and maintenance personnel difficultly provide effective phenomenon description for the maintenance personnel, and difficulty is caused for the establishment of the emergency maintenance strategy of the maintenance personnel.
As shown in fig. 5, taking a 220 kv double-bus connection mode of a 220 kv substation as an example, the specific implementation situations are as follows:
the operation mode of a certain interval is shown in fig. 5, the operation and maintenance personnel changes the operation mode of the interval into a cold standby state, when the operation is performed to 'the 3G isolating switch should be pulled open', the isolating switch cannot be driven when the operation is performed at the terminal box, the operation and maintenance personnel check that the motor power supply and the control power supply of the 3G isolating switch are both in the closed position, and the 3G isolating switch far and near control switch is in the 'on-site' state. And finally, the operation and maintenance personnel arrive beside the 3G isolating switch operating mechanism box, the mechanism box is opened, the remote and near control switch is switched to the 'on-site' state, the mechanism box can not be electrically operated when in-site operation, and finally, the operation and maintenance personnel arrive in front of the control panel, check whether the state signal indication of the electrical equipment in the interval is abnormal, immediately call and report a dispatching department, and contact the maintainer to rush repair. After the overhaul (primary and secondary) personnel arrive at the site, the inspection finally finds that the junction of the opening travel switch in the 3G isolating switch mechanism box is not reset, so that the opening loop is not communicated, and after the travel switch is replaced, the 3G isolating switch is electrically operated normally immediately, so that the fault is eliminated.
According to the traditional first-aid repair process, the isolating switch cannot be driven electrically in the operation process of operation and maintenance personnel, 3 hours are left until the site of the maintenance personnel is cleared, the time consumed in route clearing is shortened, the maintenance personnel cannot accurately and judge the fault reason according to the description of the site operation and maintenance personnel, the electric operation cannot be realized, the problem that the internal loop of the mechanism box is the primary loop or the secondary locking loop cannot be defined, manpower and material resources are wasted, and the switching operation and the first-aid repair efficiency are greatly reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a quick detection device of electrical interlocking trouble of transformer substation. The utility model discloses a gather the isolation (switch electric operation shutting return circuit node potential realizes that isolator electric operation shutting return circuit overall process real-time supervision acts on to through simple pilot lamp, for the maintainer provides reliable and accurate fault information, and then improve power supply security, reliability.
The technical scheme of the utility model is that: the utility model provides a quick detection device of electric interlocking fault of transformer substation, includes shutting state monitoring devices A, a plurality of shutting state monitoring devices B, and every shutting state monitoring devices B corresponds the electric interlocking circuit of transformer substation of a way, and shutting state monitoring devices A corresponds the electric interlocking circuit of connecting multichannel transformer substation, its characterized in that: the locking state monitoring device A comprises a plurality of sampling measuring points, the measuring points collect motor power supply idle-open state information in different interlocking circuits, each sampling measuring point of the locking state monitoring device A is provided with an indicator lamp, the locking state monitoring device B comprises five measuring points, A, B, C three measuring points are respectively connected with corresponding motor power supplies in an idle-open mode, self-holding and locking nodes are respectively connected with a self-holding power supply and a locking power supply node of a loop in a power supply idle-open mode, and each sampling measuring point of the locking state monitoring device B is provided with an indicator lamp.
According to electric interlocking fault quick detection device of transformer substation as above, its characterized in that: the indicator light in the locking state monitoring device A is a light-emitting diode which is connected with the fuse in series.
According to electric interlocking fault quick detection device of transformer substation as above, its characterized in that: the indicator light in the locking state monitoring device B is a light-emitting diode which is connected with the fuse in series.
According to electric interlocking fault quick detection device of transformer substation as above, its characterized in that: the device also comprises a sampling switch KN, a collecting switch KM and a voltage holding circuit C, wherein the sampling switch KN is added on each sampling point of the locking state monitoring device A, the collecting switch KM is added at the input point of the locking state monitoring device A, and the collecting switch KM is connected with the corresponding collecting point through the voltage holding circuit C.
According to electric interlocking fault quick detection device of transformer substation as above, its characterized in that: the sampling switch KM is used for sampling data, and the sampling switch KN is connected with the corresponding sampling switch KM in a sampling period.
The utility model has the advantages that: (1) the utility model discloses the blank of transformer substation's electrical interlocking fault short-term test real-time supervision has been filled. The method comprises the steps of monitoring whether a partition switch in an interval keeps a power supply intact or not and whether a locking condition is opened or not in real time through an electric operation locking loop monitoring device A arranged in a switch terminal box, and monitoring whether the partition switch keeps the power supply intact or not and whether the locking condition is opened or not through an electric operation locking loop monitoring device B arranged in an isolation switch operation mechanism box.
(2) The utility model discloses a device structure is simple and easy, indicate clearly and definitely, do not produce additional influence to the shutting return circuit. The device simple structure need not working power supply, need not to change electric operation shutting return circuit itself, only gathers the electric potential of electric and shutting node, judges the integrity of shutting return circuit through the pilot lamp.
(3) The utility model provides an electrically operated shutting return circuit monitoring arrangement has economic nature, practicality concurrently. The whole device is good in economical efficiency, the nodes are in a plug-in type, the installation and the replacement are convenient, the automation level of the transformer substation is improved, effective support is provided for the maintainer to judge the fault of the switch electric operation locking loop, and a basis is provided for the establishment of the maintenance strategy.
The device improves the monitoring level and the intelligent level of the electric operation loop of the substation disconnecting switch equipment.
Drawings
Fig. 1 is a schematic structural diagram of a fault rapid detection device.
Fig. 2 is a heat generation circuit diagram of the monitoring device a.
Fig. 3 is a circuit diagram of the monitoring device B.
Fig. 4 is a schematic structural diagram of another embodiment of the rapid failure detection device.
Fig. 5 is a schematic diagram of a state maintenance state of certain existing switch interval electrical equipment.
FIG. 6 is a schematic diagram of the condition maintenance of certain switch interval electrical equipment.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the utility model discloses a quick detection device of electric interlocking fault of transformer substation includes shutting state monitoring device A, a plurality of shutting state monitoring device B, and every shutting state monitoring device B corresponds the electric interlocking circuit of transformer substation all the way, and shutting state monitoring device A corresponds and connects electric interlocking circuit of multichannel transformer substation. As shown in fig. 2, the locking state monitoring device a includes a plurality of sampling measurement points, the measurement points collect the motor power supply idle-on state information in different interlocking lines, and each sampling measurement point of the locking state monitoring device a is provided with an indicator light for displaying the state of the measurement point. The locking state monitoring device B comprises five measuring points, A, B, C three measuring points are respectively connected with corresponding motor power supply idle switches, the self-holding and locking nodes are respectively connected with the self-holding power supply and the locking power supply nodes of the loop corresponding to the power supply idle switches, and each sampling measuring point of the locking state monitoring device B is provided with an indicator light for displaying the connection state of the corresponding motor power supply idle switch.
As shown in fig. 2 and fig. 3, the indicator lights of the locking state monitoring device a and the locking state monitoring device B of the present invention can be light emitting diodes, which will not generate large power, and the light emitting diodes are connected in series with the fuse to prevent short circuit fault from being cut off from the circuit rapidly.
The specific embodiment is as follows: still taking a 220 kv double-bus wiring mode of a certain 220 kv substation in the background technology as an example, the fault process is simulated, and the specific situation is as follows: when the operation and maintenance personnel operate the 3G disconnecting switch to be pulled open, and after the electric operation is found to be unavailable, the operation and maintenance personnel observe panels of a locking state monitoring device A and a locking state monitoring device B which are arranged in the interval terminal box, as shown in figure 6, a lamp in grey in figure 6 is turned on, a lamp in white in figure 6 is turned off, the lamp in on represents that the corresponding motor power supply is closed in an idle mode, and the lamp in off represents that the corresponding motor power supply is opened in an idle mode. The operation and maintenance personnel intuitively find out in fig. 6 that the blocking operation loop of the isolating switch 3G is smooth, and the situation that the electric operation cannot be performed due to the fact that a control loop in the isolating switch 3G electric operation mechanism box is disconnected cannot be caused, the operation and maintenance personnel immediately contact maintenance personnel and report that the blocking loop is abnormal, but the isolating switch 3G cannot perform the electric operation, the internal fault of the mechanism is suspected to be processed as soon as possible, and the maintenance personnel prepare relevant spare parts in the mechanism box through the fault phenomenon and rapidly remove the fault.
From the above specific examples, general conclusions can be drawn: the utility model provides an electric operation shutting return circuit monitoring arrangement can simulate under the various fault conditions, and concrete trouble link in the shutting return circuit is reflected to the accuracy, and fortune dimension personnel and maintainer are according to the signal lamp on the shutting state indicating device, alright directly perceived maintenance suggestion and maintenance strategy of giving. Specifically, as shown in table 1, the simulation of the 3G signal lamp phenomenon and the corresponding maintenance strategy are taken as an example, and the rest of the analysis processes are similar.
Table 13G isolation switch signal lamp phenomenon and reason analysis and corresponding maintenance strategy
Because the locking state monitoring device A is correspondingly connected with the electric interlocking lines of the multi-path transformer substations, the circuits of the small-sized transformer substations can be only dozens of circuits, but the connections of the large-sized transformer substations can reach hundreds of circuits or even thousands of circuits, the wiring amount is very large, and the input cost and the equipment maintenance cost are increased. Therefore, as a further proposal of the utility model, a sampling switch KN can be added on each sampling point of the locking state monitoring device A, an acquisition switch KM is added at the input point of the locked state monitoring device A, the acquisition switch KM is connected with a corresponding acquisition point through a voltage holding circuit C, when in work, the sampling switches KN are controlled to be closed in sequence, and meanwhile, the corresponding sampling switches KM are controlled to be closed, if the voltage of the circuit is high, the voltage kept for a certain time by the voltage keeping circuit C is high voltage, because the utility model has low requirement on the sampling speed, the equipment can not change for a long time, the sampling period can be longer, such as 10 seconds, 1 minute, or 2 minutes, the corresponding voltage holding circuit C should hold time greater than the sampling rate, this ensures that the indicator light corresponding to the closed state monitoring device a with a high sampling signal is always on, while the indicator light corresponding to the closed state monitoring device a with a low sampling signal is not on. The voltage holding circuit C of the present invention can be a variety of circuits, such as a MOS transistor holding circuit (application number 201820311858.3).
The utility model discloses can also include controlling means, controlling means is used for controlling opening and being closed of a plurality of sampling switch KN, a plurality of collection switch KM, makes a sampling switch KN and the collection switch KM that corresponds closed in the same time through controlling means, accomplishes so the closure of corresponding switch in a sampling cycle, has reduced the termination of equipment like this under the function prerequisite of not reducing equipment, has practiced thrift the cost. And simultaneously, the utility model discloses because work is in the transformer substation, electromagnetic environment is abominable to be not suitable for wireless signal's collection and transmission, and the utility model discloses a method of timesharing collection has reduced the connection of circuit and has ensured the reliability of adoption, can not be because of the wrong collection of signal interference.
The utility model provides an electric interlocking fault short-term test of electric substation device application scope: 1. the isolating (grounding) switch can be widely applied to isolating (grounding) switches with electric operating mechanisms in the existing transformer substations, and manual operating mechanisms are not applicable. 2. The circuit breaker is required to be arranged in a circuit breaker terminal box and an isolation (grounding) switch electric operating mechanism box to prevent damp and grounding. 3. The method is not only suitable for the alternating current closed loop, but also suitable for the direct current closed loop.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a quick detection device of electric interlocking fault of transformer substation, includes shutting state monitoring devices A, a plurality of shutting state monitoring devices B, and every shutting state monitoring devices B corresponds the electric interlocking circuit of transformer substation of a way, and shutting state monitoring devices A corresponds the electric interlocking circuit of connecting multichannel transformer substation, its characterized in that: the locking state monitoring device A comprises a plurality of sampling measuring points, the measuring points collect motor power supply idle-open state information in different interlocking circuits, each sampling measuring point of the locking state monitoring device A is provided with an indicator lamp, the locking state monitoring device B comprises five measuring points, A, B, C three measuring points are respectively connected with corresponding motor power supplies in an idle-open mode, self-holding and locking nodes are respectively connected with a self-holding power supply and a locking power supply node of a loop in a power supply idle-open mode, and each sampling measuring point of the locking state monitoring device B is provided with an indicator lamp.
2. The quick detection device of electric interlock trouble of transformer substation of claim 1 characterized in that: the indicator light in the locking state monitoring device A is a light-emitting diode which is connected with the fuse in series.
3. The quick detection device of electric interlock trouble of transformer substation of claim 1 characterized in that: the indicator light in the locking state monitoring device B is a light-emitting diode which is connected with the fuse in series.
4. The quick detection device of electric interlock trouble of transformer substation of claim 1 characterized in that: the device also comprises a sampling switch KN, a collecting switch KM and a voltage holding circuit C, wherein the sampling switch KN is added on each sampling point of the locking state monitoring device A, the collecting switch KM is added at the input point of the locking state monitoring device A, and the collecting switch KM is connected with the corresponding collecting point through the voltage holding circuit C.
5. The quick detection device of electric interlock trouble of transformer substation of claim 1 characterized in that: the sampling switch KM is used for sampling data, and the sampling switch KN is connected with the corresponding sampling switch KM in a sampling period.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427660.2U CN210775698U (en) | 2019-08-30 | 2019-08-30 | Quick detection device of electric interlocking trouble of transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921427660.2U CN210775698U (en) | 2019-08-30 | 2019-08-30 | Quick detection device of electric interlocking trouble of transformer substation |
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| CN210775698U true CN210775698U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488126A (en) * | 2019-08-30 | 2019-11-22 | 国网江苏省电力有限公司泰州供电分公司 | A kind of substation's electric interlock failure device for fast detecting |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488126A (en) * | 2019-08-30 | 2019-11-22 | 国网江苏省电力有限公司泰州供电分公司 | A kind of substation's electric interlock failure device for fast detecting |
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