GIS equipment intelligent heat tracing band constant temperature maintaining device and method

Abstract

The invention discloses a GIS equipment intelligent heat tracing band constant temperature maintaining device and method, and relates to the technical field of power system control, and the device comprises a front end heat tracing band unit which is used for wrapping and heating GIS equipment; the switching control unit is used for selecting a heating tape switching strategy according to the acquired temperature information; and the background monitoring unit is used for summarizing and displaying the temperature state of the in-station equipment and the switching state of the heating device. The outside of the GIS equipment is wrapped and heated through the front-end heat tracing band unit, the front-end heat tracing band unit is controlled through the switching control unit, constant-temperature control is carried out on the GIS equipment, and control information and temperature information are sent to the background monitoring unit for remote real-time monitoring. The connecting mode of the heat tracing assembly can be expanded or reduced according to the actual situation, and the heat tracing assembly has the significance that the heat tracing assembly adopts a modular production mode, is installed, dismantled and maintained in a standardized mode, reduces the maintenance amount and improves the safety margin of equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of power system control, and in particular to a device and method for maintaining a constant temperature of an intelligent heating belt for GIS equipment. Background Art

[0002] Gas insulated switchgear (GIS) is a complete set of switchgear consisting of circuit breakers, disconnectors, grounding switches, current transformers, voltage transformers, lightning arresters, busbars, inlet and outlet bushings or cable terminals, etc., which are enclosed in a grounded metal shell and filled with SF6 gas at a certain pressure as an insulating medium and arc extinguishing medium. Due to its small footprint and high reliability, it is widely used in the field of power substation.

[0003] In severe weather such as cold waves and heavy snow, the temperature difference between the sunny side and the shady side of the GIS cylinder is large. The inconsistent expansion joints on both sides will cause uneven stress on adjacent pot insulators, causing cracks, air leakage and other defects, which seriously threaten the safe and reliable operation of GIS equipment. The SF6 gas inside the GIS equipment is often under high pressure. Its dew point should not exceed -5 degrees Celsius at rated density. GIS equipment in low temperature areas needs to be used with heating cables.

[0004] The heating tape technology currently used can only choose whether to switch on or off the heating tape according to the on-site temperature. The heating tape is mostly heated by laying the heating tape on the outside of the cylinder. The heating tape is put into operation below the set minimum temperature to ensure that the SF6 gas in the GIS cavity is not liquefied. However, the power and number of heating tape modules cannot be adjusted according to changes in ambient temperature, and the housing temperature of the equipment cannot be sensed in real time. In addition, the equipment status and the heating tape status cannot be effectively evaluated, which can easily lead to low-temperature liquefaction of GIS equipment and false signal alarms.

[0005] Therefore, in view of the problems of poor adjustment ability, low safety margin, poor energy efficiency and other issues of existing equipment heating devices, there is an urgent need for an intelligent heating belt constant temperature maintenance device that can dynamically adjust the heating belt power according to the ambient temperature to ensure the adaptability of GIS equipment in extreme climates. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a constant temperature maintaining device and method for an intelligent heating belt for GIS equipment, which is portable for installation, plug-and-play, with background warning and dynamic compensation. It can match the most reasonable temperature state according to the temperature requirements of different equipment, and realize safe, visible and controllable equipment.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] In a first aspect, the present invention provides a GIS equipment intelligent heating belt constant temperature maintaining device, comprising:

[0009] The front-end heating cable unit is used to wrap and heat the GIS equipment;

[0010] A switching control unit is used to control the front-end heating cable unit according to the collected temperature information;

[0011] The background monitoring unit is used to receive the temperature status of the GIS equipment and the switching status of the heating device for remote monitoring.

[0012] As a further technical solution of the present invention, the front-end heating belt unit includes:

[0013] a first heating assembly, a second heating assembly, and a third heating assembly;

[0014] The first heating component is electrically connected by a plurality of first heating components and is provided with a first relay;

[0015] The second heating assembly is electrically connected by a plurality of second heating assemblies and is provided with a second relay;

[0016] The third heating assembly is electrically connected by a plurality of third heating assemblies and is provided with a third relay;

[0017] A first heating shell, a second heating shell and a third heating shell are respectively arranged on the outer sides of the first heating component, the second heating component and the third heating component, and the first heating component, the second heating component and the third heating component are connected through the first heating shell, the second heating shell and the third heating shell.

[0018] As a further technical solution of the present invention, a first card slot for installing a heating component is provided on the heating shell, and an electrical connection locking slot and an electrical connector are respectively provided at both ends of the first card slot; the electrical connector includes a plug and a clamping lock, and the electrical connection locking slot includes a socket and a locking slot, the clamping lock is located at the upper end of the plug, and the locking slot is provided at the bottom of the socket, and after the plug is inserted into the socket, the clamping lock is locked with the locking slot.

[0019] As a further technical solution of the present invention, buckles and locks are arranged on both sides of the heating shell, the buckle includes a first lock tongue, a second lock tongue, a reset spring and a support plate, the first lock tongue and the second lock tongue are arranged on the support plate, a reset spring is arranged between the first lock tongue and the second lock tongue, the lock includes a support frame and a groove arranged on the support frame, the first lock tongue and the second lock tongue are embedded in the groove to connect the lock with the buckle.

[0020] As a further technical solution of the present invention, the switching control unit includes:

[0021] An information collection module is used to collect temperature information of the front-end heating belt unit;

[0022] The CPU module receives the temperature information collected by the information collection module and generates control instructions;

[0023] A storage module, used for storing temperature information and control instructions;

[0024] The heating tape control module receives the control instruction of the CPU module to control the heating tape;

[0025] Information sending module, used to send temperature information and control instructions to the background monitoring platform;

[0026] The power module is used to provide the working voltage for the front-end heating cable unit and the switching control unit;

[0027] The output end of the information acquisition module is connected to the CPU module, the output end of the CPU module is connected to the heating belt control module and the information sending module, and the output end of the power supply module is connected to the CPU module.

[0028] As a further technical solution of the present invention, the information acquisition module includes:

[0029] A first temperature sensor is arranged on the first heating component, a second temperature sensor is arranged on the second heating component, and a third temperature sensor is arranged on the third heating component; the output ends of the first temperature sensor, the second temperature sensor, and the third temperature sensor are connected to the CPU module.

[0030] As a further technical solution of the present invention, the background monitoring unit includes:

[0031] The host computer monitoring station is used to summarize and display the cylinder temperature of the GIS equipment in the station and the heating belt switching status;

[0032] The monitoring substation is used to monitor the cylinder temperature information of the GIS equipment and the switching status of the heating belt in the combined electrical compartment, and is connected to the host computer monitoring station and the controller signal in the combined electrical compartment.

[0033] In a second aspect, the present invention provides a method for maintaining a constant temperature of an intelligent heating belt of a GIS device, comprising:

[0034] The front-end heating cable unit wraps and heats the GIS equipment;

[0035] The switching control unit controls the front-end heating tape unit according to the collected temperature information;

[0036] The background monitoring unit receives the temperature status of the GIS equipment and the switching status of the heating device for remote monitoring.

[0037] As a further technical solution of the present invention, the switching control unit controls the front-end heating belt unit according to the collected temperature information; specifically, it includes:

[0038] The front-end heating belt unit includes: a first heating component, a second heating component and a third heating component;

[0039] The upper temperature information, the middle temperature information and the lower temperature information of the GIS device are collected by a first temperature sensor provided in the first heating component, a second temperature sensor provided in the second heating component and a third temperature sensor provided in the third heating component;

[0040] When the upper surface temperature or the lower surface temperature is lower than -20°C, the first heating component and the third heating component enter the working mode;

[0041] When the upper and lower surface temperatures are higher than -20°C, and the temperature difference between the upper and lower surfaces is greater than 4°C, the heating belt located at the lower temperature part of the cylinder enters the heating mode;

[0042] When the upper and lower surface temperatures are both higher than -20°C, and the temperature difference between the upper and lower surfaces is less than 4°C, the heating belt stops working.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The present invention wraps and heats the outside of the GIS equipment through the front-end heating belt unit, controls the front-end heating belt unit through the switching control unit, performs constant temperature control on the GIS equipment, and sends the control information and temperature information to the background monitoring unit for remote real-time monitoring.

[0045] 2. The switching control unit of the present invention is used to control the front-end heating unit. A group of switching control units can control multiple front-end heating belt units. The background monitoring unit can monitor multiple switching control units to realize the monitoring and control of GIS equipment in the entire area. The present invention uses cluster control to facilitate the monitoring of the temperature of GIS equipment in the entire regional substation.

[0046] 3. The GIS equipment is heated by setting a spliced ​​heating shell composed of the first heating shell, the second heating shell and the third heating shell to ensure the normal and stable operation of the GIS equipment. The first heating component, the second heating component and the third heating component are controlled separately by setting relays to realize the individual control of each heating component, which is convenient to control.

[0047] 4. In order to facilitate the splicing and installation of the heating components embedded in the first heating shell, the second heating shell and the third heating shell, a first slot for installing the heating components is provided on the first heating shell, and electrical connection locking slots and electrical connectors are respectively provided at both ends of the first slot.

[0048] 5. In order to facilitate the connection between the first heating shell, the second heating shell and the third heating shell, buckles and locks are provided on both sides of the first heating shell.

[0049] 6. The connection mode of the heating components of the present invention can be expanded or reduced according to actual conditions. Its significance lies in that the heating components adopt a modular production mode, standardized installation, removal and maintenance, reduced maintenance workload and improved equipment safety margin. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a control structure diagram of a GIS equipment intelligent heating belt constant temperature maintenance device proposed by the present invention;

[0051] Figure 2 This is a structural diagram of the front-end heating cable unit proposed by the present invention;

[0052] Figure 3 A structural diagram of a first heating shell proposed by the present invention;

[0053] Figure 4 A structural diagram of the electrical connector proposed by the present invention;

[0054] Figure 5 This is a buckle structure diagram proposed by the present invention;

[0055] Figure 6 This is a structural diagram of the lock proposed by the present invention;

[0056] Figure 7 This is a structural diagram of the switching control unit proposed by the present invention;

[0057] Figure 8 A structural diagram of a specific embodiment of a switching control unit proposed in the present invention;

[0058] Fig. 9 This is a schematic diagram of the background monitoring unit proposed by the present invention;

[0059] Fig.10 The present invention provides a flow chart of a method for maintaining constant temperature of an intelligent heating belt for GIS equipment. DETAILED DESCRIPTION

[0060] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0061] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0062] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0063] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0064] Embodiment 1

[0065] like Figure 1 As shown, the present invention provides a GIS equipment intelligent heating belt constant temperature maintaining device, comprising:

[0066] The front-end heating cable unit 101 is used to wrap and heat the GIS equipment;

[0067] A switching control unit 102, used to control the front-end heating belt unit according to the collected temperature information;

[0068] The background monitoring unit 103 is used to receive the temperature status of the GIS equipment and the switching status of the heating device for remote monitoring.

[0069] In the embodiment of the present invention, the front-end heating belt unit is used to wrap and heat the outside of the GIS device, and the front-end heating belt unit is controlled by the switching control unit to control the GIS device at a constant temperature, and the control information and temperature information are sent to the background monitoring unit for remote real-time monitoring.

[0070] In an embodiment of the present invention, a switching control unit is used to control a front-end heating unit. A group of switching control units can control multiple front-end heating belt units. The background monitoring unit can monitor multiple switching control units to realize monitoring and control of GIS equipment in the entire area. The present invention facilitates temperature monitoring of GIS equipment in the entire regional substation through cluster control.

[0071] See also Figure 2 , the front end heating cable unit 101 comprises:

[0072] A first heating assembly 111, a second heating assembly 112 and a third heating assembly 113;

[0073] The first heating assembly 111 is electrically connected by a plurality of first heating modules and is provided with a first relay JDQ1;

[0074] The second heating assembly 112 is electrically connected by a plurality of second heating modules and is provided with a second relay JDQ2;

[0075] The third heating assembly 113 is electrically connected by a plurality of third heating modules and is provided with a third relay JDQ3;

[0076] A first heating shell 114, a second heating shell 114 and a third heating shell 113 are respectively disposed on the outer sides of the first heating component 111, the second heating component 112 and the third heating component 113, and the first heating component 111, the second heating component 112 and the third heating component 113 are connected through the first heating shell 114, the second heating shell 114 and the third heating shell 114.

[0077] The front-end heating tape unit is composed of a heating module 11, a heating module 12, ..., a heating module 3n, a snap connection, an electrical connection, a relay 1, a relay 2, a relay 3, etc.

[0078] The heating module 11 is a basic component of the front-end heating belt unit, and is electrically connected to the heating module 12 and the heating module 10, and is snap-connected to the heating module 21;

[0079] The heating module 12 is a basic component of the front-end heating belt unit, and is electrically connected to the heating module 13 and the heating module 11, and is snap-connected to the heating module 22;

[0080] The heating module 13 is a basic component of the front-end heating belt unit, which is electrically connected to the heating module 12 and the heating module 10, and is snap-connected to the heating module 23;

[0081] Relay 1 is the control element of the front-end heating belt unit, electrically connected to the heating module 13 and the heating module 1m, and connected to the controller 1 by signal;

[0082] The heating module 1m is a basic component of the front-end heating belt unit, which is electrically connected to the heating module 1n and the relay 1, and is snap-connected to the heating module 2m;

[0083] The heating module 1n is a basic component of the front-end heating belt unit, which is electrically connected to the heating module 1m and the heating module 1o, and is snap-connected to the heating component 2n;

[0084] The heating module 1o is a basic component of the front-end heating belt unit, and is electrically connected to the heating module 1n and the heating module 11, and is snap-connected to the heating module 2o;

[0085] The connection method of heating module series 2 is similar to that of heating module series 1, so it will not be described here.

[0086] The connection method of the heating module series 3 is similar to that of the heating module series 1, so it will not be repeated here.

[0087] The front-end heating belt unit adopts a modular splicing composition consisting of the first heating component, the second heating component and the third heating component. The GIS equipment is heated by setting a spliced ​​heating shell composed of the first heating shell, the second heating shell and the third heating shell to ensure the normal and stable operation of the GIS equipment. The first heating component, the second heating component and the third heating component are controlled separately by setting relays to achieve individual control of each heating component, which is convenient to control.

[0088] See also Figure 3 and Figure 4 The first heating shell, the second heating shell and the third heating shell have the same structure. In order to facilitate the splicing and installation of the heating components embedded in the first heating shell, the second heating shell and the third heating shell, the first heating shell 114 is provided with a first card slot 1141 for installing the heating component. Both ends of the first card slot 1141 are respectively provided with an electrical connection locking slot and an electrical connector; the electrical connector includes a plug 1142 and a clamping lock 1143, the electrical connection locking slot includes a socket 1144 and a locking slot 1145, the clamping lock is located at the upper end of the plug, and the locking slot is provided at the bottom of the socket. After the plug is inserted into the socket, the clamping lock is locked with the locking slot.

[0089] See also Figure 5 and Figure 6 In order to facilitate the connection between the first heating shell, the second heating shell and the third heating shell, a buckle 146 and a lock buckle 147 are set on both sides of the first heating shell 114, the buckle includes a first locking tongue, a second locking tongue, a reset spring and a support plate, the first locking tongue and the second locking tongue are set on the support plate, and a reset spring is set between the first locking tongue and the second locking tongue. The lock buckle includes a support frame and a groove set on the support frame, and the first locking tongue and the second locking tongue are embedded in the groove to connect the lock buckle with the buckle.

[0090] In the embodiment of the present invention, the snap connection is located at the left end of the heating component, the number of which is designed according to the size of the heating component (the size of the heating component varies according to the size of the GIS equipment), and is plastically connected to the heating shell;

[0091] The electrical connection is located at the upper end of the heating assembly. The number is designed according to the size of the heating assembly (the size of the heating assembly varies according to the size of the GIS equipment). It is plastically connected to the heating shell and metal connected to the heater.

[0092] The heating shell serves as a carrier of the heating component. Its size is designed according to the size of the heating component (the size of the heating component varies according to the size of the GIS equipment). It is plastically connected to the snap connection, plastically linked to the electrical connection, and plastically connected to the heater.

[0093] See also Figure 7 , the switching control unit 102 includes:

[0094] The information collection module 121 is used to collect the temperature information of the front-end heating belt unit;

[0095] CPU module 122, receives temperature information collected by the information collection module and generates control instructions;

[0096] The storage module 123 is used to store temperature information and control instructions;

[0097] The heating belt control module 124 receives the control instruction of the CPU module to control the heating belt;

[0098] Information sending module 125, used to send temperature information and control instructions to the background monitoring platform;

[0099] The power module 126 is used to provide the working voltage for the front-end heating belt unit and the switching control unit;

[0100] The output end of the information acquisition module is connected to the CPU module, the output end of the CPU module is connected to the heating cable control module and the information sending module, and the output end of the power supply module is connected to the CPU module.

[0101] The switching control unit receives the temperature information of the front-end heating unit and heats or stops heating the heating tape component according to the set constant temperature maintenance information to achieve constant temperature maintenance of the GIS equipment. The heating tape control module controls the front-end heating tape unit, and the isomorphic information sending module sends the temperature information and control instructions to the background monitoring platform. The power supply module is used to ensure the normal working voltage of the switching control unit.

[0102] Among them, the information acquisition module includes: a first temperature sensor arranged on the first heating component, a second temperature sensor arranged on the second heating component, and a third temperature sensor arranged on the third heating component; the output ends of the first temperature sensor, the second temperature sensor, and the third temperature sensor are connected to the CPU module.

[0103] The first heating component, the second heating component and the third heating component can be respectively arranged at the upper, middle and lower parts of the outside of the GIS equipment, and the temperature information of the upper, middle and lower parts of the outside of the GIS equipment can be collected and monitored by the first temperature sensor, the second temperature sensor and the third temperature sensor respectively, and the temperature information is sent to the switching control unit.

[0104] See also Figure 8 ,The upper temperature sensor is used to collect the upper surface temperature of the GIS cylinder and is connected to the information acquisition module signal;

[0105] The middle temperature sensor is used to collect the surface temperature of the GIS cylinder and is connected to the information acquisition module signal;

[0106] The lower temperature sensor is used to collect the lower surface temperature of the GIS cylinder and is connected to the information acquisition module signal;

[0107] The power module is used to provide power support for the data processing unit;

[0108] The information collection module is used to collect the temperatures of various parts of the GIS cylinder and is connected with the upper temperature sensor, the middle temperature sensor, the lower temperature sensor, and the CPU signal;

[0109] The CPU is used to process temperature data and issue a controller switching plan according to the switching strategy, and is connected to the memory, information acquisition module, and information sending module by signal;

[0110] The information sending module is used to execute the switching strategy generated by the CPU, and is connected with the heating belt controller 1, the heating belt controller 2, the heating belt controller 3, and the heating belt controller n by signal;

[0111] The memory is used to store temperature data and heating tape switching data, and is connected to the CPU and background monitoring unit signals.

[0112] See also Fig. 9 , the background monitoring unit includes:

[0113] The host computer monitoring station is used to summarize and display the cylinder temperature of the GIS equipment in the station and the heating belt switching status;

[0114] The monitoring substation is used to monitor the cylinder temperature information of the GIS equipment and the switching status of the heating belt in the combined electrical compartment, and is connected to the host computer monitoring station and the controller signal in the combined electrical compartment.

[0115] The background monitoring unit adopts monitoring substation and host computer monitoring station to realize constant temperature monitoring of heating tape of substation GIS equipment in the whole area. The monitoring substation realizes monitoring of heating tape of GIS equipment in substation, and the host computer monitoring station conducts unified monitoring of each monitoring substation.

[0116] The background monitoring unit is used to monitor the GIS cylinder temperature and heating belt switching status in the station, including the host computer monitoring station, monitoring substation 1, monitoring substation 2, monitoring substation 3, monitoring substation 4, monitoring substation 5, controller, relay, and heating unit;

[0117] The host computer monitoring station is used to summarize and display the temperature of all GIS cylinders and the switching status of heating cables in the station;

[0118] Monitoring substation 1 is used to monitor the GIS cylinder temperature and heating belt switching status in the combined electrical compartment 1, and is connected to the upper computer monitoring station and the controller signal in the combined electrical compartment 1;

[0119] Monitoring substation 2 is used to monitor the GIS cylinder temperature and heating belt switching status in combination electrical compartment 2, and is connected to the host computer monitoring station and the controller signal in combination electrical compartment 2;

[0120] Monitoring substation 3 is used to monitor the GIS cylinder temperature and heating belt switching status in the combination electrical compartment 3, and is connected to the upper computer monitoring station and the controller signal in the combination electrical compartment 3;

[0121] Monitoring substation 4 is used to monitor the GIS cylinder temperature and heating belt switching status in combination electrical compartment 4, and is connected to the host computer monitoring station and the controller signal in combination electrical compartment 4;

[0122] The monitoring substation 5 is used to monitor the GIS cylinder temperature and heating belt switching status in the combined electrical compartment 5, and is connected to the upper computer monitoring station and the controller signal in the combined electrical compartment 5;

[0123] The controller is the switching control unit, which is used to give the correct heating tape switching strategy and is connected with the monitoring substation and relay signal;

[0124] The relay is used to execute the correct heating tape switching strategy and is connected with the controller and heating unit signals;

[0125] The heating unit is used to provide temperature compensation for the GIS cylinder and is electrically connected to the relay.

[0126] The connection mode of the heating components described in the present invention can be expanded or reduced according to actual conditions. Its significance lies in that the heating components adopt a modular production mode, standardized installation, removal and maintenance, reduced maintenance workload, and improved equipment safety margin; the switching strategy described in the present invention can be upgraded according to the different altitudes, temperatures, and operating standards of the regions, and the switching of odd and even heating components can be added, etc., aiming to keep the cylinder temperature of the GIS equipment above the standard value and the temperature of each part is uniform, thereby improving power utilization, reducing costs and increasing efficiency; the control chip of the present invention can adopt various digital chips as long as it can complete data calculation work, and can be replaced by various chips.

[0127] Embodiment 2

[0128] See also Fig.10 This embodiment proposes a method for maintaining a constant temperature of an intelligent heating belt for GIS equipment, including:

[0129] Step 201, the front-end heating cable unit wraps and heats the GIS equipment;

[0130] Step 202, the switching control unit controls the front-end heating belt unit according to the collected temperature information;

[0131] Step 203: the background monitoring unit receives the temperature status of the GIS equipment and the switching status of the heating device to perform remote monitoring.

[0132] The switching control unit controls the front-end heating belt unit according to the collected temperature information; specifically, it includes:

[0133] The front-end heating belt unit includes: a first heating component, a second heating component and a third heating component;

[0134] The upper temperature information, the middle temperature information and the lower temperature information of the GIS device are collected by a first temperature sensor provided in the first heating component, a second temperature sensor provided in the second heating component and a third temperature sensor provided in the third heating component;

[0135] When the upper surface temperature or the lower surface temperature is lower than -20℃, the first heating component and the third heating component enter the working mode, and the upper and lower heating belts heat the GIS cylinder to ensure that the GIS cylinder temperature is higher than -20℃, preventing the low-temperature liquefaction of SF6 in the GIS cylinder from causing insulation failure;

[0136] When the upper and lower surface temperatures are higher than -20°C, and the temperature difference between the upper and lower surfaces is greater than 4°C, the heating belt located at the lower temperature part of the cylinder enters the heating mode to heat the lower temperature cylinder surface and reduce the temperature difference on the cylinder surface;

[0137] When the upper and lower surface temperatures are both higher than -20°C, and the temperature difference between the upper and lower surfaces is less than 4°C, the heating belt stops working.

[0138] In the embodiment of the present invention, the number of the first temperature sensor, the second temperature sensor and the third temperature sensor can be set as needed, and the upper surface temperature and the lower surface temperature are based on the average value of multiple temperature sensors of each heating belt component.

[0139] The various variations and specific examples of the device in the aforementioned embodiment are also applicable to a method for maintaining a constant temperature of an intelligent heating belt for GIS equipment in the present embodiment. Through the aforementioned detailed description of a device for maintaining a constant temperature of an intelligent heating belt for GIS equipment, those skilled in the art can clearly understand a method for maintaining a constant temperature of an intelligent heating belt for GIS equipment in the present embodiment. Therefore, for the sake of brevity of the specification, it will not be described in detail here.

[0140] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0141] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0142] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0143] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A GIS equipment intelligent heating belt constant temperature maintenance device, characterized by: include: The front-end heating cable unit is used to wrap and heat the GIS equipment; A switching control unit is used to control the front-end heating cable unit according to the collected temperature information; The background monitoring unit is used to receive the temperature status of the GIS equipment and the switching status of the heating device for remote monitoring.

2. A GIS equipment intelligent heating belt constant temperature maintaining device according to claim 1, characterized in that: The front end heating cable unit comprises: a first heating assembly, a second heating assembly, and a third heating assembly; The first heating component is electrically connected by a plurality of first heating components and is provided with a first relay; The second heating assembly is electrically connected by a plurality of second heating assemblies and is provided with a second relay; The third heating assembly is electrically connected by a plurality of third heating assemblies and is provided with a third relay; A first heating shell, a second heating shell and a third heating shell are respectively arranged on the outer sides of the first heating component, the second heating component and the third heating component, and the first heating component, the second heating component and the third heating component are connected through the first heating shell, the second heating shell and the third heating shell.

3. A GIS equipment intelligent heating belt constant temperature maintaining device according to claim 2, characterized in that: The heating shell is provided with a first card slot for installing the heating component, and the two ends of the first card slot are respectively provided with an electrical connection locking slot and an electrical connector; the electrical connector includes a plug and a clamping lock, and the electrical connection locking slot includes a socket and a locking slot, the clamping lock is located at the upper end of the plug, and the locking slot is arranged at the bottom of the socket, and after the plug is inserted into the socket, the clamping lock is locked with the locking slot.

4. A GIS equipment intelligent heating belt constant temperature maintaining device according to claim 2, characterized in that: A buckle and a lock are arranged on both sides of the heating shell, the buckle includes a first locking tongue, a second locking tongue, a reset spring and a support plate, the first locking tongue and the second locking tongue are arranged on the support plate, a reset spring is arranged between the first locking tongue and the second locking tongue, the lock includes a support frame and a groove arranged on the support frame, the first locking tongue and the second locking tongue are embedded in the groove to connect the lock with the buckle.

5. The GIS equipment intelligent heating belt constant temperature maintaining device according to claim 1, characterized in that: The switching control unit comprises: An information collection module is used to collect temperature information of the front-end heating belt unit; The CPU module receives the temperature information collected by the information collection module and generates control instructions; A storage module, used for storing temperature information and control instructions; The heating tape control module receives the control instruction of the CPU module to control the heating tape; Information sending module, used to send temperature information and control instructions to the background monitoring platform; The power module is used to provide the working voltage for the front-end heating cable unit and the switching control unit; The output end of the information acquisition module is connected to the CPU module, the output end of the CPU module is connected to the heating belt control module and the information sending module, and the output end of the power supply module is connected to the CPU module.

6. A GIS equipment intelligent heating belt constant temperature maintaining device according to claim 5, characterized in that: The information collection module includes: A first temperature sensor is arranged on the first heating component, a second temperature sensor is arranged on the second heating component, and a third temperature sensor is arranged on the third heating component; the output ends of the first temperature sensor, the second temperature sensor, and the third temperature sensor are connected to the CPU module.

7. The GIS equipment intelligent heating belt constant temperature maintaining device according to claim 1, characterized in that: The background monitoring unit comprises: The host computer monitoring station is used to summarize and display the cylinder temperature of the GIS equipment in the station and the heating belt switching status; The monitoring substation is used to monitor the cylinder temperature information of the GIS equipment and the switching status of the heating belt in the combined electrical compartment, and is connected to the host computer monitoring station and the controller signal in the combined electrical compartment.

8. A method for maintaining constant temperature of an intelligent heating cable for GIS equipment, characterized in that: A GIS equipment intelligent heating belt constant temperature maintaining device as described in any one of claims 1 to 7 is used, comprising: The front-end heating cable unit wraps and heats the GIS equipment; The switching control unit controls the front-end heating tape unit according to the collected temperature information; The background monitoring unit receives the temperature status of the GIS equipment and the switching status of the heating device for remote monitoring.

9. A method for maintaining constant temperature of an intelligent heating belt for GIS equipment according to claim 8, characterized in that: The switching control unit controls the front-end heating belt unit according to the collected temperature information; Specifically include: The front-end heating belt unit includes: a first heating component, a second heating component and a third heating component; The upper temperature information, the middle temperature information and the lower temperature information of the GIS device are collected by a first temperature sensor provided in the first heating component, a second temperature sensor provided in the second heating component and a third temperature sensor provided in the third heating component; When the upper surface temperature or the lower surface temperature is lower than -20°C, the first heating component and the third heating component enter the working mode; When the upper and lower surface temperatures are higher than -20°C, and the temperature difference between the upper and lower surfaces is greater than 4°C, the heating belt located at the lower temperature part of the cylinder enters the heating mode; When the upper and lower surface temperatures are both higher than -20°C, and the temperature difference between the upper and lower surfaces is less than 4°C, the heating belt stops working.

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