CN113346400A

CN113346400A - High-voltage switch equipment with online monitoring and emergency functions and working method

Info

Publication number: CN113346400A
Application number: CN202110899293.1A
Authority: CN
Inventors: 欧阳道生; 胡昀实; 柳文玮; 徐鹏赟; 林媛
Original assignee: Ningbo Tianan Smart Grid Technology Co ltd
Current assignee: Ningbo Tianan Smart Grid Technology Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-09-03
Anticipated expiration: 2041-08-06
Also published as: CN113346400B

Abstract

The application discloses high-voltage switch equipment with on-line monitoring and emergency functions, which comprises a rack and three-phase separation and combination components arranged on the rack, wherein a plurality of butt-joint contacts at different positions are arranged on each phase of separation and combination component; the monitoring components are provided with three monitoring components and correspondingly arranged at the position of each phase of the split-combination component, and the monitoring components are rotationally arranged on the rack; the emergency components are provided with two parts and are correspondingly arranged between the two split-combination components; the control device is suitable for controlling the monitoring component to collect the running state information of the switching-on and switching-off component, and the control device is also suitable for controlling the emergency component to switch between a normal state and an emergency state according to the running state information of the switching-on and switching-off component. The method has the advantages of non-invasive, wide monitoring range, high monitoring precision and capability of coping with abnormal conditions.

Description

High-voltage switch equipment with online monitoring and emergency functions and working method

Technical Field

The application relates to the field of power equipment, in particular to high-voltage switch equipment.

Background

In recent years, the on-line monitoring technology of high-voltage switch equipment in a power system transmission and distribution network is a research hotspot in the industry, is a technical basis for realizing state maintenance, situation perception and full-life cycle management, and is a main breakthrough direction for improving the high-efficiency, safe and environment-friendly operation of a power system. However, the online installation of sensors and other instruments requires a large capital investment, and still costs a lot of money and time during the operation and maintenance phase. Because the traditional power monitoring system adopts an 'intrusive' technical design, during installation and maintenance, a power supply user generally needs to be powered off temporarily, so that the user is easy to be discontented or other economic losses are caused, and the requirements of system optimization, energy conservation, fault detection and analysis and the like are difficult to meet at the same time; it is also possible to change the electrical performance of the object to be monitored and reduce the lifetime of the object to be monitored, thereby defeating the purpose of adding on-line monitoring.

Therefore, how to improve the monitoring method of the existing high-voltage switchgear to overcome the above problems is a problem to be solved by those skilled in the art.

Disclosure of Invention

An object of this application is to provide a non-invasive, and monitoring range is wide, and monitoring accuracy is high, can deal with abnormal conditions's high tension switchgear that has on-line monitoring and emergency function.

Another object of the present application is to provide a method of operating a high voltage switchgear as described above.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: the utility model provides a high tension switchgear with on-line monitoring and emergency function, includes the frame, and set up in three-phase deciliter part in the frame, every looks divide and shut and all be provided with a plurality of butt joint contacts that are in different positions on the part.

The high-voltage switchgear further comprises a monitoring component, an emergency component and a control device.

The monitoring components are provided with three monitoring components and correspondingly arranged at the position of each phase of the split-combination component, and the monitoring components are rotationally arranged on the rack; the monitoring component is suitable for rotating, scanning and monitoring the separation and combination component, and the monitoring component scans and covers all the butt-joint contacts.

The emergency components are arranged between the two split-combined components correspondingly, the emergency components are fixedly arranged on the rack and comprise folding and unfolding insulating parts; the emergency component has a normal state and an emergency state, the folding and unfolding insulating part is folded and attached to the rack in the normal state, and the folding and unfolding insulating part is unfolded and insulates and separates the split and combined components in each phase in the emergency state.

The control device is suitable for controlling the monitoring component to collect the running state information of the switching-on and switching-off component, and the control device is also suitable for controlling the emergency component to switch between a normal state and an emergency state according to the running state information of the switching-on and switching-off component.

Preferably, the monitoring component comprises an infrared temperature measuring module, a partial discharge detecting module and a visual detecting module, the infrared temperature measuring module is suitable for collecting temperature information of the combining and combining component, the partial discharge detecting module is suitable for collecting partial discharge information of the combining and combining component, and the visual detecting module is suitable for collecting image information of the combining and combining component; when any one of the temperature information, the partial discharge information and the image information is abnormal, the control device controls the emergency component to be switched to an emergency state. The comprehensive monitoring of the information can comprehensively find whether the high-voltage switch equipment is abnormal or not.

As an improvement, a temperature sensor and a humidity sensor are further arranged on the rack, the temperature sensor is suitable for collecting environment temperature information, the humidity sensor is suitable for collecting environment humidity information, and the control device is suitable for controlling the emergency component by combining the running state information of the opening and closing component, the environment temperature information and the environment humidity information. The information obtained by the monitoring component is influenced by the environment, so that the environmental information needs to be introduced to correct the information obtained by the monitoring component, so as to more accurately realize monitoring and emergency treatment.

As an improvement, the control device is further provided with a remote communication module, the control device is connected with a remote monitoring terminal through the remote communication module, the remote monitoring terminal is provided with an image processing module, and the image processing module is suitable for processing the image information of the split-combination component and transmitting the image information back to the control device; the remote monitoring terminal is also provided with a display module and an operation module, the display module is suitable for displaying the running state information of the on-off component, the operation module is suitable for remotely controlling the monitoring component and the emergency component through a control device, and the operation module is also suitable for changing the running parameters of the control device. As a remote monitoring and control requirement, a remote communication module and a remote monitoring terminal are generally arranged in the field, at the moment, a control device is equivalent to a transfer station, and steps of information display, information processing, instruction issuing and the like are generally carried out on the remote monitoring terminal; it should be noted that the image processing operation requires a high computational effort, and is generally difficult to be implemented on the control device, so it is preferable to integrate the image processing module in the remote monitoring terminal.

Preferably, the monitoring component and the splitting and combining components of each phase are arranged in a staggered mode, and the infrared temperature measurement module and the visual detection module are both provided with wide-angle lenses. If the monitoring component and each phase combining component are arranged in parallel, parts such as an insulating column, a pull rod and the like on the combining and combining components can shield the monitoring component; therefore, the staggered arrangement is carried out, the wide-angle lens is installed, the monitoring component has a larger monitoring range, and the monitoring blind area is reduced.

As an improvement, the monitoring part is also provided with an illuminating module; the light supplement module is used for supplementing light when light is insufficient, so that the visual detection module can obtain clearer images.

As the linkage setting, still rotate in the frame and be provided with the universal driving shaft, three monitoring part is fixed connection respectively the universal driving shaft, universal driving shaft one end is connected with driving motor, driving motor passes through the universal driving shaft drive monitoring part rotates in step.

Preferably, the folding and unfolding insulating part is an insulating air bag, an air supply system for storing insulating air is connected to the insulating air bag, the air supply system is suitable for inflating or deflating the insulating air bag, the insulating air bag is unfolded during inflation, and the insulating air bag is folded during deflation. The insulating air bag has the advantages of small volume when folded and large area when unfolded, has good insulating property when filled with insulating gas, and is suitable for being used as a folding and unfolding insulating part.

As specific structure, insulating gasbag is the ripple structure and is suitable for and be fan-shaped expansion, emergent part still includes bottom plate, guide rail and skeleton, the bottom plate be suitable for fixed set up in the frame, insulating gasbag seal installation in on the bottom plate, gas supply system passes bottom plate and intercommunication insulating gasbag, the guide rail be convex and fixed set up in bottom plate one end, the guide rail have two and distribute in insulating gasbag both sides, the skeleton have a plurality ofly and respectively fixed set up in insulating gasbag both sides, just the skeleton activity set up in on the guide rail, the skeleton is suitable for the edge the guide rail is fan-shaped expansion. Due to the arrangement of the guide rail and the framework, the expansion and the furling of the insulating air bag are more regular and ordered, and the stability and the reliability of the action of the emergency component are ensured.

As an improvement, the insulating air bag is also connected with a quick inflation device, and the quick inflation device is suitable for quickly inflating the insulating air bag; the quick inflation device with be provided with the check valve between the insulating gasbag, the check valve makes insulating gas follow quick inflation device flow direction insulating gasbag, gas supply system with be provided with the solenoid valve between the insulating gasbag, when emergent part is in normal condition the solenoid valve normal close. Because the air supply system needs a certain time (generally several seconds to tens of seconds) for inflating the insulating air bag, rapid emergency response cannot be carried out; therefore, the scheme is also provided with the quick inflation device, and the insulation air bag can be inflated within one second in a special emergency situation, so that the emergency part has the capability of quick response to deal with the emergency situation. It should be noted that the quick inflator is disposable, and after the quick inflator works, the high-voltage switch equipment is usually required to be powered off for maintenance, and at the moment, the quick inflator can be replaced at the same time.

For more comprehensive monitoring, the three-phase splitting and combining component is connected with a plurality of driving shafts, the high-voltage switch device further comprises a mechanical performance monitoring device, the mechanical performance monitoring device comprises an angular displacement sensor, a first magnetic block and a second magnetic block, the angular displacement sensor is fixedly arranged on the rack, the first magnetic block is fixedly arranged on the angular displacement sensor in a concentric mode, the second magnetic block is fixedly arranged on the driving shaft in a concentric mode, the first magnetic block and the second magnetic block are attracted magnetically, the driving shafts are suitable for driving the angular displacement sensor to rotate through the matching of the first magnetic block and the second magnetic block, and the angular displacement sensor is suitable for transmitting the rotation information of the driving shafts to the control device. The first magnetic block and the second magnetic block are arranged, so that the angular displacement sensor is not in direct contact with the driving shaft, a non-invasive arrangement mode is adopted, and the influence of the angular displacement sensor on the mechanical performance of the driving shaft is avoided.

As an improvement, the rack is also provided with a sound collection device, and the sound collection device is suitable for transmitting the operation sound information of the high-voltage switch equipment to the control device. The sound of the high-voltage switch equipment during operation often contains a lot of information, and the sound information is processed in time, so that a lot of abnormal conditions can be prevented.

A working method of a high-voltage switch device with on-line monitoring and emergency functions comprises the following steps:

s1: the monitoring component continuously rotates to scan and monitor, so that the infrared temperature measurement module collects temperature information of a plurality of positions on the switching component in real time, the partial discharge detection module collects partial discharge information near each switching component in real time, and the visual detection module collects image information of a plurality of positions on the switching component in real time; the temperature sensor collects environmental temperature information in real time, and the humidity sensor collects environmental humidity information in real time.

S2: the control device and the remote monitoring terminal obtain the information in S1, and determine whether the temperature information, the partial discharge information, and the image information are abnormal or not, in combination with the environmental temperature information and the environmental humidity information.

S3: when any one of the temperature information, the partial discharge information and the image information is abnormal, the control device or the remote monitoring terminal controls the emergency component to be switched to an emergency state for insulation and isolation.

Specifically, the step of determining whether the temperature information is abnormal in S2 includes the steps of:

s21: and (3) taking the ambient temperature T1 at a certain moment when the high-voltage switchgear normally operates and the temperature T2 at a certain position on the switching-on and switching-off component, calculating to obtain a temperature rise constant delta T1= T2-T1, and recording the ambient humidity phi 1 at the moment.

S22: the method comprises the steps of monitoring the ambient temperature T3 at any time when the high-voltage switch device operates, the temperature T4 and the ambient humidity phi 2 at corresponding positions on the switching component, calculating a temperature rise correction parameter delta phi =2 (phi 2-phi 1) at any time, and calculating a temperature rise parameter delta T2= T4-T3-delta phi = T4-T3-2 (phi 2-phi 1) at any time.

S23: calculating the temperature rise coefficient a = delta T2/delta T1; and when a is larger than 1.1, judging that the temperature information is abnormal.

Specifically, the step of determining whether the partial discharge information is abnormal in S2 includes the steps of:

s24: and taking a partial discharge constant P1 at a certain moment when the high-voltage switch equipment normally operates, and recording the environment humidity phi 3 at the moment, wherein the phi 3 is less than or equal to 80%.

S25: and monitoring the partial discharge parameter P2 and the environment humidity phi 4 at any time when the high-voltage switch equipment operates.

When phi 4 is less than or equal to 80%, calculating a partial discharge coefficient b = P2/P1; when phi 4 is larger than 80%, calculating partial discharge coefficient b = P2/P1+ phi 4; and when the partial discharge coefficient b is more than or equal to 2, judging that the partial discharge information is abnormal.

As an improvement, in the above S23, when a is more than 1.1 and less than a and less than 1.3, the temperature information is judged to be a general abnormality, and the control device or the remote monitoring terminal controls the air supply system to inflate the insulating airbag and switch the emergency part to the emergency state; and when a is more than or equal to 1.3, judging that the temperature information is seriously abnormal, and controlling the quick inflating device to inflate the insulating air bag and quickly switch the emergency part to an emergency state by the control device or the remote monitoring terminal.

As an improvement, in the above S26, when b is greater than or equal to 2 and less than 3, it is determined that the temperature information is a general abnormality, and the control device or the remote monitoring terminal controls the air supply system to inflate the insulating airbag and switch the emergency component to the emergency state; and when b is more than or equal to 3, judging that the temperature information is seriously abnormal, and controlling a quick inflating device to inflate the insulating air bag and quickly switch the emergency part to an emergency state by a control device or a remote monitoring terminal.

Preferably, in S1, the monitoring unit scans and monitors n key positions, the dwell time of the monitoring unit at each position is 5 seconds, the average rotation time of the monitoring unit at the adjacent position is 2 seconds, the monitoring unit performs scanning and monitoring by using reciprocating rotation, and the scanning period t =5n +2 (n-1) =7n-2 seconds is calculated; when the monitoring component stays or rotates, the partial discharge detection module works in the whole process and records partial discharge information in the whole time period, and the vision detection module makes a picture in the whole process; when the monitoring component stays, the infrared temperature measurement module works and records the temperature information of a certain position in the time interval, and the visual detection module shoots and records the image information of the certain position at a certain time.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the monitoring component and the emergency component of the scheme are non-invasive, so that the electrical performance and the mechanical performance of the monitored object cannot be influenced, and the monitoring accuracy is ensured; and the distance between the monitoring device and a primary circuit with high voltage, large current and strong magnetic field environment can be kept, and the safety and reliability of the work of monitoring components and emergency components are ensured.

(2) The monitoring part of the scheme also adopts a rotating scanning mode to monitor, so that the number of the monitoring part arrangement is effectively reduced on the premise of ensuring the monitoring range, and the manufacturing cost of the whole equipment is reduced.

(3) The scheme is also provided with an emergency component which is used for insulating and separating each phase of the split component in time when the monitoring component monitors abnormal conditions, so that the operation safety of the high-voltage switch equipment is ensured; and when the abnormal condition is relieved, the emergency component can be recovered to a normal state, and the influence on the subsequent operation of the high-voltage switch equipment is avoided.

Drawings

Fig. 1 is a schematic structural view of a conventional combined type high voltage vacuum circuit breaker according to an embodiment of the present application.

Fig. 2 is a perspective view of a preferred embodiment according to the present application (emergency components in normal condition).

Fig. 3 is a perspective view of a preferred embodiment according to the present application (emergency component in emergency condition).

Fig. 4 is a perspective view from another perspective according to a preferred embodiment of the present application (the monitoring member stays in three different positions in fig. 2-4).

FIG. 5 is an enlarged view at A of FIG. 4 in accordance with a preferred embodiment of the present application.

FIG. 6 is an enlarged view at B of FIG. 4 in accordance with a preferred embodiment of the present application.

FIG. 7 is a schematic perspective view of a linkage of three monitoring members according to a preferred embodiment of the present application.

FIG. 8 is a front view of a monitoring component in accordance with a preferred embodiment of the present application.

Fig. 9 is a perspective view of an emergency component according to a preferred embodiment of the present application.

FIG. 10 is a schematic diagram of a work frame according to a preferred embodiment of the present application.

In the figure: 100. a frame; 101. a separating and combining component; 102. a drive shaft; 111. butting contacts; 200. a wiring board; 300. a conductive seat; 400. isolating the contact cutter; 500. a wall-penetrating pole column; 600. a vacuum arc-extinguishing chamber; 700. a conductive rod; 800. an operating mechanism; 900. a grounding switch; 201. static contact; 701. a moving contact; 301. a ground contact; 1. a monitoring component; 11. an infrared temperature measurement module; 12. a partial discharge detection module; 13. a visual detection module; 14. a lighting module; 15. a linkage shaft; 16. a drive motor; 2. an emergency component; 21. an insulating air bag; 22. a base plate; 23. a guide rail; 24. a framework; 25. an electromagnetic valve; 3. a control device; 31. a remote communication module; 4. a temperature sensor; 5. a humidity sensor; 6. a remote monitoring terminal; 61. an image processing module; 62. a display module; 63. an operation module; 7. an air supply system; 8. a rapid inflation device; 81. a one-way valve; 9. a mechanical property monitoring device; 91. an angular displacement sensor; 92. a first magnetic block; 93. a second magnetic block; 10. a sound collection device.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, the present application is exemplified by a combined high voltage vacuum circuit breaker, which includes a rack 100, wherein a three-phase wiring board 200 and a conductive socket 300 are respectively mounted on two sides of the rack 100 in an insulated manner, the wiring board 200 is suitable for being electrically connected to incoming cables, and the conductive socket 300 is suitable for being electrically connected to outgoing cables; an isolation contact knife 400, a wall-penetrating pole 500 and a vacuum arc-extinguishing chamber 600 are sequentially arranged between each phase of wiring board 200 and the conductive seat 300, the wall-penetrating pole 500 is arranged on the rack 100 in a penetrating manner, a conductive rod 700 is arranged in the wall-penetrating pole 500, and the conductive rod 700 is electrically connected with the wiring board 200 and the vacuum arc-extinguishing chamber 600, so that a three-phase split-combined component 101 is formed; the rack 100 is further provided with an operating mechanism 800, and the operating mechanism 800 is used for controlling the actions of the isolating contact knife 400 and the vacuum arc-extinguishing chamber 600, so as to open and close the circuit breaker. The wiring board 200 is provided with a fixed contact 201, one end of the conductive rod 700 is provided with a movable contact 701, one end of the isolating contact knife 400 rotates and is electrically connected to the movable contact 701, the isolating contact knife 400, the movable contact 701 and the fixed contact 201 form an isolating switch, and the operating mechanism 800 controls the isolating contact knife 400 to rotate so as to open and close the isolating switch. The rack 100 is further provided with a grounding switch 900, the conductive seat 300 is provided with a grounding contact 301, and the operating mechanism 800 controls the grounding switch 900 to be switched on and switched off.

Each phase of the combined high-voltage vacuum circuit breaker has four butt contacts 111, and twelve total butt contacts 111 (including the internal butt contacts of the vacuum arc-extinguishing chamber, two isolated butt contacts formed by an isolated contact knife, a moving contact and a fixed contact, and a grounding butt contact formed by a grounding switch and a grounding contact) are provided, and the butt contacts 111 are located at different positions and are separated at two sides of the rack 100.

In the prior art, the monitoring modes for a plurality of butt contacts 111 are mainly two types: (1) a monitoring device is arranged near each butt contact 111 for monitoring one by one; (2) a plurality of monitoring devices are provided at the remote end to monitor the high voltage switchgear as a whole, and the operating conditions of each mating contact 111 are calculated by dividing the area and by means of algorithm analysis. In the first monitoring method, a large number of monitoring devices (for example, twelve monitoring devices are required to be arranged in the combined high-voltage vacuum circuit breaker), which greatly increases the overall manufacturing cost of the equipment; in the second monitoring method, the monitoring distance is long, so that the monitoring data can be greatly influenced by environmental factors, the data is obtained mainly through an algorithm, and the accuracy of the data has a certain difference compared with a one-to-one monitoring mode.

In view of the above situation, as shown in fig. 2 to 10, a monitoring component 1 is provided in a preferred embodiment of the present application, and a rotational scanning monitoring mode is adopted, so that on the premise of ensuring a monitoring range and monitoring accuracy, the number of the monitoring components 1 is effectively reduced, and the manufacturing cost of the whole device is controlled.

The arrangement of the monitoring unit 1 is as follows: the monitoring parts 1 are provided with three parts and correspondingly arranged at the position of each phase separation and combination part 101, and the monitoring parts 1 are rotatably arranged on the rack 100; the monitoring part 1 is adapted to rotate to scan and monitor the opening and closing part 101, and the monitoring part 1 scans and covers all the butt contacts 111.

In addition, when the monitoring part 1 monitors an abnormal condition, the current general method is to manually determine whether the abnormal condition is serious, if the abnormal condition is serious, the high-voltage switchgear needs to be subjected to power-off inspection and maintenance, and if the abnormal condition is controllable, the monitoring is continuously observed. The above-mentioned method mainly has two problems: (1) the requirement of manual judgment on professional literacy of a judge is extremely high, and misjudgment is still possible; when the controllable abnormal condition is judged as a serious abnormal condition by mistake, unnecessary power failure of the high-voltage switch equipment is caused, and unnecessary loss is caused; when the serious abnormal condition is judged as the controllable abnormal condition by mistake, the operation of the high-voltage switch equipment has huge potential safety hazard. (2) Both manual judgment and manual control on/off of the high-voltage switch equipment require response time, and emergency is difficult to deal with at the first time.

In view of the above situation, as shown in fig. 2 to 10, in a preferred embodiment of the present application, an emergency component 2 and a control device 3 are further provided, when the monitoring component 1 monitors an abnormal condition, the control device 3 can control the emergency component 2 to timely isolate and separate the phase separation and combination components 101, so as to preferentially ensure the safety of the operation of the high-voltage switchgear; on the basis of safe operation of the high-voltage switch equipment, a worker can check abnormal conditions on line or on site and judge whether power-off maintenance needs to be carried out on the high-voltage switch equipment. The emergency component 2 effectively solves two problems of untimely response and easy misjudgment in the prior art, and reserves sufficient and safe troubleshooting time for workers.

The emergency part 2 and the control device 3 are arranged as follows: the emergency component 2 is provided with two parts which are correspondingly arranged between the two split-combined components 101, the emergency component 2 is fixedly arranged on the rack 100, and the emergency component 2 comprises a folding-unfolding insulating part; the emergency part 2 has a normal state in which the folding and unfolding insulating member is folded and attached to the frame 100 and an emergency state in which the folding and unfolding insulating member is unfolded and insulates and separates the respective engaging parts 101. The control device 3 is suitable for controlling the monitoring component 1 to collect the running state information of the switching component 101, and the control device 3 is further suitable for controlling the emergency component 2 to switch between the normal state and the emergency state according to the running state information of the switching component 101.

It should be noted that the emergency part 2, although it is capable of increasing the insulating properties of the high voltage switchgear, determines that the function and structure of the emergency part 2 is not suitable as a normalized arrangement. Specifically, on the one hand, the normal arrangement of the emergency component 2 may affect the normal operation of the high-voltage switchgear to a certain extent, and on the other hand, the normal arrangement of the emergency component 2 may greatly increase the possibility of insulation failure of itself, even a fault or damage, thereby losing its emergency function. Therefore, the panic member 2 can only serve as a panic device for coping with an abnormal situation.

As shown in fig. 7 and 8, the monitoring component 1 includes an infrared temperature measuring module 11, an partial discharge detecting module 12, a visual detecting module 13, and an illuminating module 14, where the infrared temperature measuring module 11 is adapted to collect temperature information of the switching component 101, the partial discharge detecting module 12 is adapted to collect partial discharge information of the switching component 101, and the visual detecting module 13 is adapted to collect image information of the switching component 101; when any one of the temperature information, the partial discharge information and the image information is abnormal, the control device 3 controls the emergency part 2 to be switched to an emergency state; the lighting module 14 is used for supplementary lighting when light is insufficient, so that the visual detection module 13 can obtain a clearer image. As linkage setting, a linkage shaft 15 is also rotatably arranged on the rack 100, the three monitoring components 1 are respectively and fixedly connected with the linkage shaft 15, one end of the linkage shaft 15 is connected with a driving motor 16, and the driving motor 16 drives the monitoring components 1 to synchronously rotate through the linkage shaft 15; the driving motor 16 may be disposed in the operating mechanism 800, and the circuit of the monitoring component 1, the components in the operating mechanism 800, and the circuit of the control device 3 perform secondary paying-off together.

In order to enable the monitoring component 1 to have a larger monitoring range and reduce monitoring blind areas, the monitoring component 1 and each phase split component 101 are arranged in a staggered mode, and the infrared temperature measurement module 11 and the visual detection module 13 are both provided with wide-angle lenses.

It should be mentioned that, in order to reduce the overall volume of the monitoring component 1, the infrared temperature measurement module 11, the partial discharge detection module 12 and the visual detection module 13 may all be configured with the probe on the monitoring component 1 on the machine, and the detection main body, the processing unit, etc. may be configured integrally or on the control device 3 through the circuit. It should be noted that the specific structures and operating principles of the infrared temperature measuring module 11, the partial discharge detection module 12, and the visual detection module 13 are common knowledge, and therefore are not specifically described in this embodiment, but this does not prevent the specific features from becoming implicit in this application.

As shown in fig. 6, in order to correct the information obtained by the monitoring component 1, the rack 100 is further provided with a temperature sensor 4 and a humidity sensor 5, the temperature sensor 4 is adapted to collect environmental temperature information, the humidity sensor 5 is adapted to collect environmental humidity information, and the control device 3 is adapted to control the emergency component 2 in combination with the operating state information of the switching component 101, the environmental temperature information, and the environmental humidity information. It is worth mentioning that the temperature sensor 4 and the humidity sensor 5 both extend out of the rack 100 for a distance, so that the temperature sensor 4 and the humidity sensor can monitor the environmental information more accurately, and the operation of the high-voltage switch device is prevented from influencing the high-voltage switch device.

As shown in fig. 10, a remote communication module 31 is further disposed on the control device 3, the control device 3 is connected to the remote monitoring terminal 6 through the remote communication module 31, the remote monitoring terminal 6 has an image processing module 61, and the image processing module 61 is adapted to process the image information of the combining component 101 and transmit the image information back to the control device 3; the remote monitoring terminal 6 is also provided with a display module 62 and an operation module 63, the display module 62 is suitable for displaying the running state information of the on-off component 101, the operation module 63 is suitable for remotely controlling the monitoring component 1 and the emergency component 2 through the control device 3, and the operation module 63 is also suitable for changing the running parameters of the control device 3. As a remote monitoring and control requirement, a remote communication module 31 and a remote monitoring terminal 6 are generally arranged in the field, at this time, the control device 3 is equivalent to a transfer station, and the steps of information display, information processing, instruction issuing and the like are generally carried out at the remote monitoring terminal 6; it is worth mentioning that the image processing work requires a high computational effort and is generally difficult to be implemented on the control device 3, and therefore, it is preferable to integrally provide the image processing module 61 on the remote monitoring terminal 6. In this embodiment, the remote monitoring terminal 6 is a conventional computer, the image processing module 61 is a combination of software and hardware such as a CPU and a GPU of the computer, the display module 62 is a display of the computer, and the operation module 63 is a keyboard and a mouse of the computer.

The remote monitoring terminal 6 can be used for manually controlling the operation of the monitoring component 1 and the emergency component 2 besides normally monitoring the high-voltage switch equipment and automatically controlling the monitoring component 1 and the emergency component 2, so that required information can be obtained at any time, manual intervention control can be performed at any time, and the applicability of the remote monitoring terminal is improved.

The embodiment further provides a specific structure of the emergency component 2, specifically, as shown in fig. 9, the emergency component 2 includes a folding and unfolding insulating member, a bottom plate 22, a guide rail 23 and a framework 24, wherein the folding and unfolding insulating member is an insulating airbag 21, the insulating airbag 21 is of a corrugated structure and is suitable for being unfolded in a fan shape, an air supply system 7 for storing insulating gas is connected to the insulating airbag 21, the air supply system 7 is suitable for inflating or deflating the insulating airbag 21, the insulating airbag 21 is unfolded when inflated, and the insulating airbag 21 is folded when deflated; the bottom plate 22 is suitable for fixed setting on frame 100, and insulating gasbag 21 seal installation is on bottom plate 22, and air supply system 7 passes bottom plate 22 and communicates insulating gasbag 21, and guide rail 23 is arc and fixed setting in bottom plate 22 one end, and guide rail 23 has two and distributes in insulating gasbag 21 both sides, and skeleton 24 has a plurality ofly and respectively fixed setting in insulating gasbag 21 both sides, and skeleton 24 activity sets up on guide rail 23, and skeleton 24 is suitable for and is fan-shaped expansion along guide rail 23.

Wherein the insulating air bag 21 and the framework 24 are made of insulating fireproof materials; the insulating gas stored in the gas supply system 7 is preferably sulfur hexafluoride gas. The gas supply system 7 can be an air pump station scheme or a needle cylinder piston scheme, and since the schemes are the prior art and are not the key points of the embodiment, detailed description is not provided.

As an improvement, the insulating air bag 21 is also connected with a quick inflation device 8, and the quick inflation device 8 is suitable for quickly inflating the insulating air bag 21; a check valve 81 is arranged between the quick inflator 8 and the insulating air bag 21, the check valve 81 enables the insulating gas to flow from the quick inflator 8 to the insulating air bag 21, an electromagnetic valve 25 is arranged between the gas supply system 7 and the insulating air bag 21, and the electromagnetic valve 25 is normally closed when the emergency part 2 is in a normal state. The quick inflation device 8 can adopt a quick release scheme of an automobile safety airbag, so that the insulation airbag 21 can be quickly filled with nitrogen, and the nitrogen also has a good insulation effect; the fast release scheme of the automobile safety airbag is the prior art, is not the key point of the embodiment, and is not described in detail.

As shown in fig. 5, for more comprehensive monitoring, a plurality of driving shafts 102 (in this embodiment, an arc extinguishing chamber main shaft, an isolation main shaft and a grounding main shaft) are connected to the three-phase opening and closing component 101, the high-voltage switch device further includes a mechanical performance monitoring device 9, the mechanical performance monitoring device 9 includes an angular displacement sensor 91, a first magnetic block 92 and a second magnetic block 93, the angular displacement sensor 91 is fixedly disposed on the rack 100, the first magnetic block 92 is fixedly disposed on the angular displacement sensor 91 concentrically, the second magnetic block 93 is fixedly disposed on the driving shaft 102 concentrically, the first magnetic block 92 and the second magnetic block 93 are magnetically attracted to each other, the driving shaft 102 is adapted to drive the angular displacement sensor 91 to rotate by cooperation of the first magnetic block 92 and the second magnetic block 93, and the angular displacement sensor 91 is adapted to transmit rotation information of the driving shaft 102 to the control device 3. In addition, as a matching configuration, a component for monitoring mechanical performance is also provided in the operating mechanism 800, and is monitored in cooperation with the mechanical performance monitoring device 9 of the drive shaft 102.

As shown in fig. 6, more fully, the rack 100 is further provided with a sound collection device 10, and the sound collection device 10 is adapted to transmit operation sound information of the high-voltage switchgear to the control device 3. The corresponding remote monitoring terminal 6 is also correspondingly provided with sound output equipment, so that a worker can conveniently monitor the sound generated when the high-voltage switch equipment operates at any time. For example, when the partial discharge is abnormal, a distinct sound may be generated, and at this time, the worker may determine whether the abnormal condition is serious or not according to experience.

The working method of the high-voltage switch equipment with the on-line monitoring and emergency functions comprises the following steps:

The step of determining whether the temperature information is abnormal in S2 includes the steps of:

The step of determining whether the partial discharge information is abnormal in S2 includes the steps of:

In the above S23, when a is greater than 1.1 and less than 1.3, it is determined that the temperature information is generally abnormal, and the control device or the remote monitoring terminal controls the air supply system to inflate the insulating airbag and switch the emergency component to the emergency state; and when a is more than or equal to 1.3, judging that the temperature information is seriously abnormal, and controlling the quick inflating device to inflate the insulating air bag and quickly switch the emergency part to an emergency state by the control device or the remote monitoring terminal.

In the above S26, when b is greater than or equal to 2 and less than 3, it is determined that the temperature information is generally abnormal, and the control device or the remote monitoring terminal controls the air supply system to inflate the insulating airbag and switch the emergency component to the emergency state; and when b is more than or equal to 3, judging that the temperature information is seriously abnormal, and controlling a quick inflating device to inflate the insulating air bag and quickly switch the emergency part to an emergency state by a control device or a remote monitoring terminal.

In the above S1, the important positions of the monitoring unit for scanning and monitoring are n, the dwell time of the monitoring unit at each position is 5 seconds, the average rotation time of the monitoring unit at the adjacent position is 2 seconds, the monitoring unit performs scanning and monitoring by adopting reciprocating rotation, and the scanning period t =5n +2 (n-1) =7n-2 seconds, in this embodiment, n =4, so the scanning period is 26 seconds. When the monitoring component stays or rotates, the partial discharge detection module works in the whole process and records partial discharge information in the whole time period, and the vision detection module makes a picture in the whole process; when the monitoring component stays, the infrared temperature measurement module works and records the temperature information of a certain position in the time interval, and the visual detection module shoots and records the image information of the certain position at a certain time. The scanning period is not suitable to be too long, the monitoring is not timely due to the too long period, the scanning period is not suitable to be too short, and the monitoring is not accurate due to the too short period.

The reason why the temperature rise correction parameter is introduced in S22 is that, according to field data, test data and experience, when the ambient humidity is high, the butt-joint contact is wrapped by water vapor, and a damp condition occurs, so that the resistance between the butt-joint contacts is increased, the temperature rises, which is a normal phenomenon, and therefore, the influence of the temperature rise on the temperature rise generated by monitoring the operation of the high-voltage switchgear needs to be eliminated. In the embodiment, the temperature rise correction parameter Δ Φ =2 (Φ 2- Φ 1) belongs to an empirical formula (the coefficient 2 in the formula belongs to an empirical coefficient), the influence of the ambient humidity on the temperature rise generally does not exceed 2 ℃, and the temperature rise and the humidity are approximately in a direct proportion relationship, so the formula is adopted for approximate correction.

The reason why the environmental humidity parameter is introduced in S26 is that the high humidity environment (humidity is not less than 80%) has a great influence on the insulation performance of the high voltage switchgear, and the influence of the non-high humidity environment on the insulation performance is negligible; in order to ensure safe operation of the high-voltage switchgear, it is necessary to reduce the partial discharge information to be a criterion for determining abnormality in a high-humidity environment, and therefore, the partial discharge coefficient needs to be corrected and amplified in the high-humidity environment. In the embodiment, the partial discharge coefficient b = P2/P1+ Φ 4 in the high humidity environment also belongs to an empirical formula; the higher the humidity is, the lower the partial discharge parameter when the partial discharge information is judged to be abnormal; even if the partial discharge parameter P2 is equal to the partial discharge constant P1 (i.e., the partial discharge amount at this time is not increased compared to that in the normal operation state) when the ambient humidity reaches 100%, the partial discharge coefficient b reaches 2, and it is determined that the high-voltage switching device is in an abnormal condition, so that the high-voltage switching device can better cope with the environment with extremely high humidity.

The working method is described by introducing specific parameters as follows:

the ambient temperature T1=25 ℃ and the ambient humidity phi 1=50% when the high-voltage switchgear operates normally, the temperature of a pair of contact heads is T2=65 ℃, and a temperature rise constant delta T1= T2-T1=40 ℃ is calculated. At a certain moment, the temperature T4=80 ℃ of the pair of contacts, the ambient temperature T3=30 ℃ and the ambient humidity phi 2=80%, the temperature rise parameter delta T2= T4-T3-2 (phi 2-phi 1) =49.6 ℃ is calculated, and the temperature rise coefficient a = delta T2/delta T1=1.24 at the moment is judged to be generally abnormal; if T4=90 ℃, the temperature rise coefficient a =1.49 and it is determined as serious abnormality if the other conditions are not changed. The general abnormity is usually caused by factors such as contact abrasion, poor contact of the contact and the like, the serious abnormity is usually caused by factors such as contact deformation, contact looseness and the like, and the judgment standard is basically in accordance with the expectation.

The partial discharge constant P1=10pC and the ambient humidity Φ 3=50% when the high-voltage switchgear is operating normally. The partial discharge parameter P2=20pC at a certain moment, the environmental humidity phi 4=60%, the partial discharge coefficient b = P2/P1=2, and the general abnormality is judged; if the partial discharge parameter P2=25pC at a certain time and the ambient humidity Φ 4=90%, the partial discharge system b = P2/P1+ Φ 4 ± ] 4=3.31 is calculated, and it is determined as a serious abnormality.

In addition, the reason why the temperature rise coefficient a and the partial discharge coefficient b both adopt proportional coefficients rather than absolute values is that the absolute values of the temperature rise parameter and the partial discharge parameter of different high-voltage switchgear are greatly different, and a unified judgment standard is not provided, so that the proportional coefficients are introduced, so that different high-voltage switchgear can judge whether an abnormal condition occurs according to the same calculation formula.

It should be noted that the temperature rise constant Δ T1 and the partial discharge constant P1 may be dynamic constants, at this time, the temperature rise parameter Δ T2 is compared with the temperature rise constant Δ T1 at the previous time and the temperature rise coefficient a is calculated, and the partial discharge parameter P2 is compared with the partial discharge constant P1 at the previous time and the partial discharge coefficient b is calculated. Therefore, the influence of the environmental factors on the temperature rise coefficient a and the partial discharge coefficient b can be avoided to the greatest extent, but the adverse effect is that when the temperature rise coefficient a and the partial discharge coefficient b rise slowly, the conditions are easily judged to be non-abnormal conditions, and a new algorithm is needed for correction at the moment, which is not in the discussion range of the application.

It should be noted that, the calculation method of the above working method is obtained by running the high-voltage switch equipment under the rated power, rated voltage and rated current, and the abnormal condition is mainly caused by the problems of the high-voltage switch equipment; if the abnormal condition is caused by the change of power, current and voltage, the calculation mode will introduce the corresponding electrical parameters, which is not in the scope of the present application.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides a high tension switchgear with on-line monitoring and emergency function, includes the frame, and set up in three-phase deciliter part in the frame, every looks divide and shut and all be provided with a plurality of butt joint contact that are in different positions on the part, its characterized in that:

the high-voltage switch equipment also comprises a monitoring component, an emergency component and a control device;

the monitoring components are provided with three monitoring components and correspondingly arranged at the position of each phase of the split-combination component, and the monitoring components are rotationally arranged on the rack; the monitoring component is suitable for rotationally scanning and monitoring the on-off component, and the monitoring component scans and covers all the butt-joint contacts;

the emergency components are arranged between the two split-combined components correspondingly, the emergency components are fixedly arranged on the rack and comprise folding and unfolding insulating parts; the emergency component has a normal state and an emergency state, the folding and unfolding insulating part is folded and close to the rack in the normal state, and the folding and unfolding insulating part is unfolded and insulates and separates the split and combined components in each phase in the emergency state;

2. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 1, characterized in that: the monitoring component comprises an infrared temperature measuring module, a partial discharge detecting module and a visual detecting module, the infrared temperature measuring module is suitable for collecting temperature information of the on-off component, the partial discharge detecting module is suitable for collecting partial discharge information of the on-off component, and the visual detecting module is suitable for collecting image information of the on-off component; when any one of the temperature information, the partial discharge information and the image information is abnormal, the control device controls the emergency component to be switched to an emergency state.

3. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 2, characterized in that: still be provided with temperature sensor and humidity transducer in the frame, temperature sensor is suitable for gathering ambient temperature information, humidity transducer is suitable for gathering ambient humidity information, controlling means is suitable for combining the running state information of deciliter part, above-mentioned ambient temperature information and ambient humidity information are right emergent part is controlled.

4. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 3, characterized in that: the control device is also provided with a remote communication module, the control device is connected with a remote monitoring terminal through the remote communication module, the remote monitoring terminal is provided with an image processing module, and the image processing module is suitable for processing the image information of the split-combination component and transmitting the image information back to the control device; the remote monitoring terminal is also provided with a display module and an operation module, the display module is suitable for displaying the running state information of the on-off component, the operation module is suitable for remotely controlling the monitoring component and the emergency component through a control device, and the operation module is also suitable for changing the running parameters of the control device.

5. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 2, characterized in that: the monitoring component and the splitting and combining components of each phase are arranged in a staggered mode, and the infrared temperature measurement module and the vision detection module are both provided with wide-angle lenses;

the monitoring part is also provided with an illumination module;

the frame is further rotatably provided with a linkage shaft, the three monitoring components are respectively and fixedly connected with the linkage shaft, one end of the linkage shaft is connected with a driving motor, and the driving motor drives the monitoring components to synchronously rotate through the linkage shaft.

6. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 1, characterized in that: the foldable insulating part is an insulating air bag, an air supply system for storing insulating air is connected to the insulating air bag, the air supply system is suitable for inflating or exhausting the insulating air bag, the insulating air bag is unfolded during inflation, and the insulating air bag is folded during exhausting.

7. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 6, characterized in that: insulating gasbag is corrugated structure and is suitable for and be fan-shaped expansion, emergent part still includes bottom plate, guide rail and skeleton, the bottom plate be suitable for fixed set up in the frame, insulating gasbag seal installation in on the bottom plate, gas supply system passes bottom plate and intercommunication insulating gasbag, the guide rail be convex and fixed set up in bottom plate one end, the guide rail have two and distribute in insulating gasbag both sides, the skeleton have a plurality ofly and respectively fixed set up in insulating gasbag both sides, just the skeleton activity set up in on the guide rail, the skeleton is suitable for the edge the guide rail is fan-shaped expansion.

8. A high voltage switchgear with on-line monitoring and emergency functions, according to claim 7, characterized in that: the insulation air bag is also connected with a quick inflation device, and the quick inflation device is suitable for quickly inflating the insulation air bag; the quick inflation device with be provided with the check valve between the insulating gasbag, the check valve makes insulating gas follow quick inflation device flow direction insulating gasbag, gas supply system with be provided with the solenoid valve between the insulating gasbag, when emergent part is in normal condition the solenoid valve normal close.

9. A high voltage switchgear with on-line monitoring and emergency functions according to any of claims 1 to 8, characterized in that: the high-voltage switch equipment comprises three phases of switching components, a high-voltage switch device and a mechanical performance monitoring device, wherein the switching components are connected with a plurality of driving shafts, the high-voltage switch equipment further comprises a mechanical performance monitoring device, the mechanical performance monitoring device comprises an angular displacement sensor, a first magnetic block and a second magnetic block, the angular displacement sensor is fixedly arranged on the rack, the first magnetic block is concentrically and fixedly arranged on the angular displacement sensor, the second magnetic block is concentrically and fixedly arranged on the driving shaft, the first magnetic block and the second magnetic block are magnetically attracted, the driving shaft is suitable for driving the angular displacement sensor to rotate through the matching of the first magnetic block and the second magnetic block, and the angular displacement sensor is suitable for transmitting the rotation information of the driving shaft to the control device; the rack is also provided with a sound collection device, and the sound collection device is suitable for transmitting the operation sound information of the high-voltage switch equipment to the control device.

10. A working method of high-voltage switch equipment with on-line monitoring and emergency functions is characterized in that: the method comprises the following steps:

s1: the monitoring component continuously rotates to scan and monitor, so that the infrared temperature measurement module collects temperature information of a plurality of positions on the switching component in real time, the partial discharge detection module collects partial discharge information near each switching component in real time, and the visual detection module collects image information of a plurality of positions on the switching component in real time; the temperature sensor acquires environmental temperature information in real time, and the humidity sensor acquires environmental humidity information in real time;

s2: the control device and the remote monitoring terminal obtain the information in the step S1, and judge whether the temperature information, the partial discharge information and the image information are abnormal or not by combining the environmental temperature information and the environmental humidity information;

11. A method of operating a high voltage switchgear with on-line monitoring and emergency functions, as claimed in claim 10, characterized in that: the step of determining whether the temperature information is abnormal in S2 includes the steps of:

s21: taking the ambient temperature T1 at a certain moment when the high-voltage switch equipment normally operates and the temperature T2 at a certain position on the opening and closing component, calculating to obtain a temperature rise constant delta T1= T2-T1, and recording the ambient humidity phi 1 at the moment;

s22: monitoring the ambient temperature T3 at any time when the high-voltage switch equipment operates, the temperature T4 and the ambient humidity phi 2 at corresponding positions on the switching component, calculating a temperature rise correction parameter delta phi =2 (phi 2-phi 1) at any time, and calculating a temperature rise parameter delta T2= T4-T3-delta phi = T4-T3-2 (phi 2-phi 1) at any time;

12. A method of operating a high voltage switchgear with on-line monitoring and emergency functions, as claimed in claim 11, characterized in that: the step of determining whether the partial discharge information is abnormal in S2 includes the steps of:

s24: taking a partial discharge constant P1 at a certain moment when the high-voltage switch equipment normally operates, and recording the environment humidity phi 3 at the moment, wherein the phi 3 is less than or equal to 80%;

s25: monitoring partial discharge parameters P2 and environment humidity phi 4 at any time when the high-voltage switch equipment operates;

s26: when phi 4 is less than or equal to 80%, calculating a partial discharge coefficient b = P2/P1; when phi 4 is larger than 80%, calculating partial discharge coefficient b = P2/P1+ phi 4; and when the partial discharge coefficient b is more than or equal to 2, judging that the partial discharge information is abnormal.

13. A method of operating a high voltage switchgear with on-line monitoring and emergency functions, as claimed in claim 12, characterized in that: in the above S23, when a is greater than 1.1 and less than 1.3, it is determined that the temperature information is generally abnormal, and the control device or the remote monitoring terminal controls the air supply system to inflate the insulating airbag and switch the emergency component to the emergency state; when a is more than or equal to 1.3, judging that the temperature information is seriously abnormal, and controlling a quick inflating device to inflate the insulating air bag and quickly switch the emergency component to an emergency state by a control device or a remote monitoring terminal;

14. A method of operating a high voltage switchgear with on-line monitoring and emergency functions, as claimed in claim 10, characterized in that: in the above S1, the number of the important positions of the monitoring component for scanning and monitoring is n, the dwell time of the monitoring component at each position is 5 seconds, the average rotation time of the monitoring component at the adjacent position is 2 seconds, the monitoring component performs scanning and monitoring by adopting reciprocating rotation, and the scanning period t =5n +2 (n-1) =7n-2 seconds is calculated;

when the monitoring component stays or rotates, the partial discharge detection module works in the whole process and records partial discharge information in the whole time period, and the vision detection module makes a picture in the whole process; when the monitoring component stays, the infrared temperature measurement module works and records the temperature information of a certain position in the time interval, and the visual detection module shoots and records the image information of the certain position at a certain time.