CN212875246U - High-voltage direct-current gas insulated switchgear - Google Patents
High-voltage direct-current gas insulated switchgear Download PDFInfo
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- CN212875246U CN212875246U CN202021008850.3U CN202021008850U CN212875246U CN 212875246 U CN212875246 U CN 212875246U CN 202021008850 U CN202021008850 U CN 202021008850U CN 212875246 U CN212875246 U CN 212875246U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 6
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- 239000000835 fiber Substances 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
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- 230000005611 electricity Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a high voltage direct current gas insulated switchgear, comprising an overhead line and/or cable interface module, a shell, a grounding switch and/or an isolating switch, a measuring module, a lightning arrester and an internal environment monitoring module; the shell is connected to the interface ends of the overhead line and the cable interface module, is of a sealing structure and is filled with insulating gas; the grounding switch and/or the isolating switch are/is arranged in the shell; the measuring module and the lightning arrester are arranged outside the shell and connected with the shell; the internal environment monitoring module monitors the internal gas environment of the shell. The switching equipment is arranged in a direct current field of the converter station, so that the purposes of voltage and current measurement, overvoltage protection, grounding and isolation are realized, and meanwhile, the occupied space of the direct current field switching equipment is reduced.
Description
Technical Field
The utility model belongs to the technical field of the electric power product, a high voltage direct current gas insulated switchgear is related to.
Background
The electric power industry develops at a high speed, and simultaneously, the common progress of the manufacturing industry of high-voltage electrical equipment is driven. The requirements of the power industry for high-voltage electrical equipment are concentrated and embodied in that: high voltage of transmission of electricity, high reliable operation of transmission and distribution of electricity. The high-voltage transmission can reduce the line loss of electric energy and improve the power supply capacity and distance; the high-reliability operation of power transmission and distribution is not only the requirement of the majority of power users, but also the premise of improving the economic benefit and the working quality in the power industry. This has brought new development directions to our industry of manufacturing of electrical devices. According to the update of the switch industry in the years, the combination, maintenance-free and intellectualization of high-voltage electricity can be seen easily, and products with the structures are as follows: GIS, gas-filled cabinet, Compass (ABB) and other combined electrical appliances occupy more and more, and have good market prospects.
In recent years, urban and rural construction of China is rapid, the contradiction between land resource demand and protection is more and more large, the conventional power transmission and transformation stations are scattered in construction of power equipment, large in occupied area, serious in land resource waste, low in overall reliability, large in maintenance amount and high in maintenance cost; these factors greatly restrict the development of power transmission and transformation stations towards reliable, small, flexible and efficient resource utilization.
At present, open-type switching equipment is generally adopted in direct-current field switching equipment of a converter station in China, and is large in occupied space and poor in environmental adaptability.
SUMMERY OF THE UTILITY MODEL
In order to improve direct current field switchgear's current situation, the utility model provides a high voltage direct current gas insulated switchgear, occupation space is little, the reliability is high, simple to operate.
In order to achieve the above object, the present invention provides a high voltage direct current gas insulated switchgear, comprising an overhead line and/or cable interface module, a housing, a grounding switch and/or an isolating switch, a measuring module, a lightning arrester and an internal environment monitoring module;
the shell is connected to an interface end of an overhead line and/or a cable interface module, the shell is a sealing structure, and insulating gas is filled in the shell;
the grounding switch and the isolating switch are arranged in the shell;
the measuring module and the lightning arrester are arranged outside the shell and connected with the shell;
the internal environment monitoring module monitors the internal gas environment of the shell.
Further, the intelligent cabinet is arranged outside the shell; the intelligent cabinet monitors state signals of a grounding switch, a disconnecting switch and a circuit breaker of the high-voltage direct-current gas insulated switchgear in real time, current and voltage signals measured by the measuring module, and gas environment parameters inside the shell measured by the internal environment monitoring module.
Furthermore, the measuring module comprises the current measuring unit and the voltage measuring unit which are respectively connected with the shell.
Furthermore, the current measuring unit adopts an all-fiber current transformer, the annular sensing head is arranged in the shell and is pressed and fixed from two sides by the insulating part, the shell is provided with an optical fiber leading-out socket, and a current signal detected by the current measuring unit is transmitted to the measuring unit in the intelligent cabinet by the polarization maintaining optical fiber.
Furthermore, the voltage measuring unit adopts a resistance-capacitance voltage division principle to convert primary high voltage into 40V, an output terminal is fixed on the shell, and a double-shielded cable with an aviation socket transmits a voltage signal to a merging unit in the intelligent cabinet.
Further, the internal environment monitoring module includes a pressure sensor and a density sensor.
Furthermore, the grounding switch and the isolating switch are installed in the shell by adopting an isolating-grounding combined switch, a moving contact supporting conductor is arranged in the shell, a moving contact is arranged on the supporting conductor, and two ends of the moving contact are respectively a grounding tube and an isolating end and respectively correspond to a grounding static contact and an isolating static contact.
Further, the overhead line and/or cable interface module acts as a lead-in or lead-out for the line.
The above technical scheme of the utility model has following profitable technological effect:
the utility model discloses a high voltage direct current gas insulated switchgear, earthing switch, isolator arrange the casing in inside, the unit is measured to the electric current, the unit is measured to the voltage and the arrester is connected with the casing as solitary module. Compared with air switch equipment, the environment adaptability and the reliability of products are improved, and the occupied space of the switch equipment is reduced.
Drawings
Fig. 1 is a typical embodiment of a high voltage dc gas insulated switchgear according to the present invention;
shown in FIG. 1: 1. an overhead line/cable interface module; 2. a current measuring unit; 3. a shell 4 and an internal environment monitoring device; 5. a ground/isolation switch; 6, an intelligent cabinet; 7. a voltage measuring unit; 8. an arrester.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
A typical embodiment of a high voltage dc gas insulated switchgear according to the present invention will be further described with reference to fig. 1.
The utility model discloses a high voltage direct current gas insulated switchgear, as shown in fig. 1, including overhead line and/or cable interface module 1, casing 3, internal environment monitoring module 4, earthing switch and/or isolator 5, intelligent cabinet 6, measuring module, arrester 8.
The shell 3 is connected to an interface end of the overhead line and/or cable interface module 1, the shell is a sealing structure, and insulating gas is filled in the shell; the insulating gas includes SF6, nitrogen gas or mixture gas of the two, preferably SF 6.
The measuring module comprises the current measuring unit 2 and the voltage measuring unit 7 which are respectively connected with the shell 3. The current measuring unit adopts an all-fiber current transformer, the annular sensing head is arranged in the shell and is pressed and fixed from two sides by the insulating part, the shell is provided with an optical fiber leading-out socket, and the signal is transmitted to the measuring unit in the intelligent cabinet by the polarization maintaining optical fiber. The voltage measuring unit converts primary high voltage into 40V and transmits the 40V to the indoor merging unit by adopting a resistance-capacitance voltage division principle, the output terminal is fixed on the shell, and data are transmitted to the merging unit in the intelligent cabinet by a double-shielded cable with an aviation socket.
The earthing switch and/or the isolating switch 5 are/is arranged in the shell, and the current measuring unit 2, the voltage measuring unit 7 and the lightning arrester 8 are connected with the shell as separate modules. And the intelligent cabinet 6 is arranged outside the shell. The intelligent cabinet 6 is internally provided with a plurality of electric components such as an intelligent control unit, a transfer switch, a temperature and humidity controller and a live display device of the high-voltage direct-current gas insulated switchgear, can monitor state signals of a grounding switch, an isolating switch and a circuit breaker of the high-voltage direct-current gas insulated switchgear in real time and parameters such as current, voltage and gas pressure, and is connected with the control cubicle through an aviation socket cable. The high-voltage direct-current gas insulation switch device is characterized in that a direct-current field switch device is placed in a shell filled with insulating gas, and creepage layout requirements are reduced, so that the environmental adaptability and reliability of a product are improved, and the occupied space of the switch device is reduced.
The grounding switch and the isolating switch are installed in the shell by adopting an isolating-grounding combined switch, a moving contact supporting conductor is arranged in the shell, a moving contact is arranged on the supporting conductor, and two ends of the moving contact are respectively a grounding tube and an isolating end and respectively correspond to a grounding static contact and an isolating static contact.
The internal environment monitoring module comprises a pressure sensor and a density sensor which are respectively connected with the shell.
In one embodiment, the incoming line and the outgoing line can be selected from an overhead line or a cable according to the situation, the overhead line is adopted to require the overhead line interface module 1, and if the cable is adopted, the cable interface module 1 is required.
In one embodiment, the isolating switch and the grounding switch can be configured only according to requirements to adapt to different working condition requirements.
In one embodiment, the voltage measuring unit 7 may be arranged on the side of the compartment line or on the side of the bus line.
In one embodiment, the surge arrester 8 may be arranged on the bay line side or on the bus bar side.
The utility model discloses a high voltage direct current gas insulated switchgear compares air switch equipment, monitors the change of internal environment, promotes the environmental suitability and the reliability of product, will reduce switchgear's occupation space.
To sum up, the utility model relates to a high voltage direct current gas insulated switchgear, comprising an overhead line and/or cable interface module, a shell, a grounding switch and/or an isolating switch, a measuring module, a lightning arrester and an internal environment monitoring module; the shell is connected to the interface ends of the overhead line and the cable interface module, is of a sealing structure and is filled with insulating gas; the grounding switch and/or the isolating switch are/is arranged in the shell; the measuring module and the lightning arrester are arranged outside the shell and connected with the shell; the internal environment monitoring module monitors the internal gas environment of the shell. The switching equipment is arranged in a direct current field of the converter station, so that the purposes of voltage and current measurement, overvoltage protection, grounding and isolation are realized, and meanwhile, the occupied space of the direct current field switching equipment is reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The high-voltage direct-current gas insulated switchgear is characterized by comprising an overhead line and/or cable interface module, a shell, a grounding switch and/or an isolating switch, a measuring module, a lightning arrester and an internal environment monitoring module;
the shell is connected to an interface end of an overhead line and/or a cable interface module, the shell is a sealing structure, and insulating gas is filled in the shell;
the grounding switch and the isolating switch are arranged in the shell;
the measuring module and the lightning arrester are arranged outside the shell and connected with the shell;
the internal environment monitoring module monitors the internal gas environment of the shell.
2. The high voltage direct current gas insulated switchgear of claim 1 further comprising a smart cabinet disposed outside the enclosure; the intelligent cabinet monitors state signals of a grounding switch, a disconnecting switch and a circuit breaker of the high-voltage direct-current gas insulated switchgear in real time, current and voltage signals measured by the measuring module, and gas environment parameters inside the shell measured by the internal environment monitoring module.
3. The high voltage direct current gas insulated switchgear according to claim 2, characterized in that the measuring module comprises a current measuring unit and a voltage measuring unit, each connected to the housing.
4. The HVDC gas-insulated switchgear of claim 3, wherein the current measurement unit is an all-fiber current transformer, the annular sensing head is installed in a housing, and is pressed and fixed from both sides by an insulating member, the housing is installed with a fiber outlet socket, and a polarization maintaining fiber transmits a current signal detected by the current measurement unit to a measurement unit in the intelligent cabinet.
5. The HVDC gas insulated switchgear of claim 3, wherein the voltage measurement unit converts a primary high voltage to 40V by using a resistance-capacitance voltage division principle, the output terminal is fixed on the housing, and the voltage signal is transmitted to the merging unit in the intelligent cabinet by a double-shielded cable with an aviation socket.
6. High voltage direct current gas insulated switchgear according to claim 1 or 2, characterized in that the internal environment monitoring module comprises a pressure sensor and a density sensor.
7. The HVDC gas-insulated switchgear of claim 1 or 2, wherein the grounding switch and the isolating switch are installed in a housing by using an isolating-grounding combination switch, a moving contact supporting conductor is installed in the housing, a moving contact is installed on the supporting conductor, and two ends of the moving contact are respectively a grounding tube and an isolating end, which respectively correspond to the grounding static contact and the isolating static contact.
8. High voltage direct current gas insulated switchgear according to claim 1 or 2, characterized in that the overhead line and/or the cable interface module serves as lead-in or lead-out for the line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021008850.3U CN212875246U (en) | 2020-06-04 | 2020-06-04 | High-voltage direct-current gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021008850.3U CN212875246U (en) | 2020-06-04 | 2020-06-04 | High-voltage direct-current gas insulated switchgear |
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| Publication Number | Publication Date |
|---|---|
| CN212875246U true CN212875246U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021008850.3U Active CN212875246U (en) | 2020-06-04 | 2020-06-04 | High-voltage direct-current gas insulated switchgear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498423A (en) * | 2021-12-24 | 2022-05-13 | 国网福建省电力有限公司超高压分公司 | Direct current GIS |
-
2020
- 2020-06-04 CN CN202021008850.3U patent/CN212875246U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498423A (en) * | 2021-12-24 | 2022-05-13 | 国网福建省电力有限公司超高压分公司 | Direct current GIS |
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