CN210745817U - Converter station cooling system - Google Patents
Converter station cooling system Download PDFInfo
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- CN210745817U CN210745817U CN201921024287.6U CN201921024287U CN210745817U CN 210745817 U CN210745817 U CN 210745817U CN 201921024287 U CN201921024287 U CN 201921024287U CN 210745817 U CN210745817 U CN 210745817U
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- 238000001816 cooling Methods 0.000 title claims abstract description 187
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000000498 cooling water Substances 0.000 claims abstract description 37
- 238000004378 air conditioning Methods 0.000 claims abstract description 27
- 238000010248 power generation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a converter station cooling system, which comprises a converter valve internal cooling system, a converter valve external cooling system, a cooling system integrated controller, a valve hall air conditioner and a water chilling unit; the converter valve external cooling system is circularly connected with the converter valve internal cooling system; the water chiller group is provided with a valve hall air conditioner water chiller unit and a valve external cooling water chiller unit, the valve hall air conditioner is circularly connected with the valve hall air conditioner water chiller unit, and the converter valve external cooling system is composed of the valve external cooling water chiller unit; the valve external cooling water chiller and the valve hall air conditioning water chiller are both bidirectionally connected with the cooling system comprehensive controller, and by adopting the structure, the comprehensive and compact design of the converter station cooling system can be realized, the investment cost of the converter station cooling system can be effectively reduced, the occupied area of the cooling system can be effectively reduced, the converter station shutdown risk caused by the limited load of the valve hall air conditioning water chiller can be effectively reduced, and the problem of extra electric energy loss caused by the adoption of the water chiller of the converter valve external cooling system can be effectively solved.
Description
Technical Field
The utility model relates to a cooling system technical field of converter station change of current valve and valve room especially relates to a cooling system of converter station.
Background
The key point of the high-voltage direct-current transmission system for realizing alternating current-direct current electric energy conversion is a converter station. The converter station main equipment comprises a converter valve, an alternating current-direct current filter, a switch, a transformer, a reactor and the like, wherein a power electronic full-control device (IGBT and the like) or a half-control device (thyristor and the like) adopted by the converter valve generates loss in the electric energy conversion process, and heat generated by the loss is subjected to heat exchange through a cooling system. Meanwhile, the operation of the converter valve puts strict requirements on the temperature and the humidity of a valve hall, and the valve hall generally adopts an air conditioner to control the temperature and the humidity.
At present, a converter valve external cooling system of a converter station mainly adopts a closed cooling tower or an air cooler scheme. In areas with rich water resources, an external cooling system adopts a closed cooling tower scheme, the spray water replenishing quantity and the waste water discharge quantity of the closed cooling tower of the converter valve are counted according to the operation, and the disadvantages exist in the aspects of various indexes such as the complexity of a matching system, the water resource consumption, the waste water discharge and the water resource dependence. In areas with high temperature water shortage, the external cooling system adopts an air cooler scheme, the scheme avoids a large amount of water supplement of the external cooling system, but has disadvantages in the aspects of land occupation, noise and the like.
Aiming at the problems of the two external cooling system schemes, a composite external cooling scheme combining a water chilling unit, a closed cooling tower and an air cooler is adopted at present. The water chilling unit is widely applied to the fields of energy power generation cooling, communication machine room air conditioning and the like, but due to the defects of early investment cost, power consumption and the like of the scheme in the application scene of the converter station, the water chilling unit is not successfully applied to the field of direct-current power transmission.
Disclosure of Invention
The embodiment of the utility model provides a converter station cooling system can effectively reduce converter station cooling system's investment cost, and can effectively reduce cooling system's area, and can effectively reduce the converter station outage risk that valve room air conditioner cooling water set load restricted leads to.
In order to achieve the above object, an embodiment of the present invention provides a converter station cooling system, which includes a converter valve internal cooling system, a converter valve external cooling system, a cooling system integrated controller, a valve hall air conditioner and a water chiller;
the converter valve external cooling system is circularly connected with the converter valve internal cooling system; the water chiller group is provided with a valve hall air conditioner water chiller unit and a valve external cooling water chiller unit, the valve hall air conditioner is circularly connected with the valve hall air conditioner water chiller unit, and the converter valve external cooling system is composed of the valve external cooling water chiller unit; and the valve external cooling water chilling unit and the valve hall air conditioning water chilling unit are both bidirectionally connected with the cooling system integrated controller.
As an improvement of the above scheme, the converter valve external cooling system further comprises an external valve cooling air cooler;
and the air cooler for valve external cooling and the water chilling unit for valve external cooling are circularly connected with the cooling system in the converter valve.
As an improvement of the above scheme, the converter valve external cooling system further comprises a cooling tower;
and the cooling tower and the water chilling unit for cooling the outside of the valve are circularly connected with the cooling system in the converter valve.
As an improvement of the above scheme, the converter station cooling system further comprises a converter power supply system, wherein the converter power supply system is formed by connecting a photovoltaic light-emitting unit and at least one converter station transformer in parallel;
the output end of the converter power supply system is connected with the input end of the converter valve internal cooling system, the input end of the converter valve external cooling system, the input end of the cooling system integrated controller, the input end of the valve hall air conditioner and the input end of the water chilling unit.
As an improvement of the scheme, the cooling tower is a closed cooling tower.
Compared with the prior art, the utility model discloses a converter station cooling system, through converter station cooling system includes converter valve internal cooling system, converter valve external cooling system, cooling system integrated control ware, valve room air conditioner and cooling water set; the converter valve external cooling system is circularly connected with the converter valve internal cooling system; the water chiller group is provided with a valve hall air conditioner water chiller unit and a valve external cooling water chiller unit, the valve hall air conditioner is circularly connected with the valve hall air conditioner water chiller unit, and the converter valve external cooling system is composed of the valve external cooling water chiller unit; and the valve external cooling water chilling unit and the valve hall air conditioning water chilling unit are both bidirectionally connected with the cooling system integrated controller. By adopting the structure, the integrated design and the compact design of the cooling system of the converter station are realized by uniformly designing and distributing the cooling system outside the converter valve and the air-conditioning cooling system in the valve hall, so that the investment cost of the cooling system of the converter station can be effectively reduced, and the occupied area of the cooling system can be effectively reduced; secondly, a cooling system integrated controller is adopted to regulate and control a valve external cooling water chilling unit and the valve hall air conditioning water chilling unit, so that the converter station shutdown risk caused by limited load of the valve hall air conditioning water chilling unit can be effectively reduced; and then, a wiring scheme that the photovoltaic power generation unit is connected into the converter power supply system in parallel is adopted, so that relatively independent power supply of the photovoltaic power generation unit and the original station power supply system can be realized, and the problem of extra electric energy loss caused by the adoption of a water chilling unit in the converter valve external cooling system can be effectively solved.
Drawings
Fig. 1 is a schematic structural diagram of a converter station cooling system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a converter station cooling system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a converter station cooling system in a third embodiment of the present invention;
fig. 4 is a schematic power supply diagram of a cooling system of a converter station according to a fourth embodiment of the present invention;
the method comprises the following steps of 1, cooling a system in a converter valve; 2. a converter valve external cooling system; 21. an air cooler for cooling outside the valve; 22. a cooling tower; 3. a cooling system integrated controller; 4. a valve hall air conditioner; 5. a water chilling unit; 51. a valve hall air-conditioning water chilling unit; 52. a water chilling unit for cooling outside the valve; 6. and a converter power supply system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, which is a schematic structural diagram of a converter station cooling system in an embodiment of the present invention, the converter station cooling system includes a converter valve internal cooling system 1, a converter valve external cooling system 2, a cooling system integrated controller 3, a valve hall air conditioner 4, and a water chiller unit 5;
the converter valve external cooling system 2 is circularly connected with the converter valve internal cooling system 1; the water chilling unit 5 is provided with a valve hall air-conditioning water chilling unit 51 and a valve external cooling water chilling unit 52, the valve hall air conditioner 4 is circularly connected with the valve hall air-conditioning water chilling unit 51, and the converter valve external cooling system 2 is composed of the valve external cooling water chilling unit 52; the valve external cooling water chilling unit 52 and the valve hall air conditioning water chilling unit 51 are both bidirectionally connected with the cooling system integrated controller 3.
It should be noted that the conventional cooling load of the converter station, i.e., the air conditioning load of each building or room in the converter station, mainly includes ventilation air conditioning systems of a valve hall, a main control building and a comprehensive building. The valve hall air conditioner needs to maintain the temperature of the valve hall, the cold water outlet temperature of the water cold accumulation and the cold water outlet temperature of the ice cold accumulation within a preset threshold range meeting the refrigeration requirement of the conventional cold load. The temperature and the humidity of the valve hall are controlled by a valve hall air conditioner, and the valve hall air conditioner 4 realizes the heat exchange of the valve hall through a cold water unit 5.
Further, heat generated by the loss of the converter valve system exchanges heat with the converter valve internal cooling system 1 through the converter valve external cooling system 2. The cooling liquid of the converter valve internal cooling system 1 is high-purity deionized water, the converter valve internal cooling system sends cooled pure water to a valve plate radiator to take away heat generated by a valve plate, the heated pure water is pumped into a heat dissipation coil outside a valve hall to dissipate heat, cool and cool, and the cooled pure water is sent to the valve plate radiator again, and the circulation is repeated. In this embodiment, the converter valve external cooling system 2 mainly functions to take away heat in the heat dissipation coil of the converter valve internal cooling system 1. The converter valve external cooling system 2 is constituted by a valve external cooling chiller 52. In the design stage of the converter station, the valve external cooling water chilling unit 52 and the valve hall air conditioning water chilling unit 51 are designed and distributed uniformly, so that the comprehensive and compact design of the converter station cooling system is realized, the investment cost of the converter station cooling system can be effectively reduced, and the occupied area of the cooling system can be effectively reduced.
Furthermore, the cooling system integrated controller 3 is adopted to perform integrated optimization control on the valve external cooling water chilling unit 52 and the valve hall air conditioning water chilling unit 51 according to the real-time environment temperature, the valve hall temperature control target value, the inlet and outlet water temperature of the converter valve internal cooling system 1, the load condition of the valve external cooling water chilling unit 52 and the load condition of the valve hall air conditioning water chilling unit 51. When the load of the valve hall air-conditioning water chilling unit 51 exceeds a preset load threshold value, namely under the condition that the load of the valve hall air-conditioning water chilling unit 51 is limited, the cooling system integrated controller 3 calls the redundant load of the valve external cooling water chilling unit, and the converter station shutdown risk caused by the limitation of the load of the valve hall air-conditioning water chilling unit 51 is reduced.
Preferably, the converter valve external cooling system 2 may be constituted by the valve external cooling air cooler 21, the cooling tower 22, and the valve external cooling chiller 52. According to the actual design configuration scheme, the system comprises three composition schemes of a valve external cooling water chilling unit 52+ a cooling tower 22, a valve external cooling water chilling unit 52+ a valve external cooling air cooler 21 and a pure valve external cooling water chilling unit 52.
Referring to fig. 2, which is a schematic structural diagram of a converter station cooling system according to a second embodiment of the present invention, the converter valve external cooling system 2 further includes an air cooler 21 for valve external cooling;
the valve external cooling air cooler 21 and the valve external cooling water chilling unit 52 are circularly connected with the converter valve internal cooling system 1.
In this embodiment, the converter valve external cooling system 2 is composed of an external valve cooling air cooler 21 and an external valve cooling water chiller 52, and the external valve cooling air cooler 21 and the external valve cooling water chiller 52 are circularly connected to the converter valve internal cooling system 1. The water chilling unit 5 comprises a valve hall air-conditioning water chilling unit 51 and a valve external cooling water chilling unit 52 of the converter valve external cooling system 2; the valve hall air conditioner 4 is circularly connected with the valve hall air conditioner water chilling unit 51, and the valve outside cooling water chilling unit 52 and the valve hall air conditioner water chilling unit 51 are both bidirectionally connected with the cooling system integrated controller 3.
Referring to fig. 3, which is a schematic structural diagram of a converter station cooling system in the third embodiment of the present invention, the converter valve external cooling system 2 further includes a cooling tower 22;
the cooling tower 22 and the valve external cooling water chilling unit 52 are circularly connected with the converter valve internal cooling system 1.
In this embodiment, the converter valve external cooling system 2 is composed of a cooling tower 22 and a valve external cooling chiller 52, and the cooling tower 22 and the valve external cooling chiller 52 are circularly connected to the converter valve internal cooling system 1. The water chilling unit 5 comprises a valve hall air-conditioning water chilling unit 51 and a valve external cooling water chilling unit 52 of the converter valve external cooling system 2; the valve hall air conditioner 4 is circularly connected with the valve hall air conditioner water chilling unit 51, and the valve outside cooling water chilling unit 52 and the valve hall air conditioner water chilling unit 51 are both bidirectionally connected with the cooling system integrated controller 3.
Preferably, the cooling tower 22 is a closed cooling tower.
Referring to fig. 4, a schematic power supply diagram of a converter station cooling system in the fourth embodiment of the present invention is shown, where the converter station cooling system further includes a converter power supply system 6, and the converter power supply system is formed by connecting a photovoltaic light-emitting unit and at least one converter station transformer in parallel;
the output end of the converter power supply system 6 is connected with the input end of the converter valve internal cooling system 1, the input end of the converter valve external cooling system 2, the input end of the cooling system integrated controller 3, the input end of the valve hall air conditioner 4 and the input end of the water chilling unit 5.
The electricity consumption of the cooling system, lighting, power and the like of the converter station mainly comes from a converter power supply system, and is generally reduced and supplied from the inside and the outside of the converter station through a converter station transformer. The primary converter power supply system is formed by connecting at least one converter station in parallel by using transformers. In the embodiment, the photovoltaic power generation unit is arranged on the roof of the valve hall or other buildings in the converter station and is connected into the power supply system of the primary converter. The photovoltaic power generation unit and the original converter power supply system are relatively independent and are connected in parallel. When any one 10kV original converter power supply system fails, the photovoltaic power generation unit can realize continuous power supply through switching of the circuit breaker; under the condition that the photovoltaic power generation unit breaks down, the power supply of an original converter power supply system is not influenced through the switching of the circuit breaker, and the problem of extra electric energy loss caused by the fact that a water chilling unit is adopted by an external cooling system of the converter valve can be effectively solved.
The embodiment of the utility model provides a pair of convertor station cooling system has following beneficial effect: the converter station cooling system comprises a converter valve internal cooling system, a converter valve external cooling system, a cooling system integrated controller, a valve hall air conditioner and a water chilling unit; the converter valve external cooling system is circularly connected with the converter valve internal cooling system; the water chiller group is provided with a valve hall air conditioner water chiller unit and a valve external cooling water chiller unit, the valve hall air conditioner is circularly connected with the valve hall air conditioner water chiller unit, and the converter valve external cooling system is composed of the valve external cooling water chiller unit; and the valve external cooling water chilling unit and the valve hall air conditioning water chilling unit are both bidirectionally connected with the cooling system integrated controller. By adopting the structure, the integrated design and the compact design of the cooling system of the converter station are realized by uniformly designing and distributing the cooling system outside the converter valve and the air-conditioning cooling system in the valve hall, so that the investment cost of the cooling system of the converter station can be effectively reduced, and the occupied area of the cooling system can be effectively reduced; secondly, a cooling system integrated controller is adopted to regulate and control a valve external cooling water chilling unit and the valve hall air conditioning water chilling unit, so that the converter station shutdown risk caused by limited load of the valve hall air conditioning water chilling unit can be effectively reduced; and then, a wiring scheme that the photovoltaic power generation unit is connected into the converter power supply system in parallel is adopted, so that relatively independent power supply of the photovoltaic power generation unit and the original station power supply system can be realized, and the problem of extra electric energy loss caused by the adoption of a water chilling unit in the converter valve external cooling system can be effectively solved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (5)
1. A cooling system of a converter station is characterized by comprising a converter valve internal cooling system, a converter valve external cooling system, a cooling system integrated controller, a valve hall air conditioner and a water chilling unit;
the converter valve external cooling system is circularly connected with the converter valve internal cooling system; the water chiller group is provided with a valve hall air conditioner water chiller unit and a valve external cooling water chiller unit, the valve hall air conditioner is circularly connected with the valve hall air conditioner water chiller unit, and the converter valve external cooling system is composed of the valve external cooling water chiller unit; and the valve external cooling water chilling unit and the valve hall air conditioning water chilling unit are both bidirectionally connected with the cooling system integrated controller.
2. The converter station cooling system of claim 1, wherein the converter valve external cooling system further comprises an external valve cooling air cooler;
and the air cooler for valve external cooling and the water chilling unit for valve external cooling are circularly connected with the cooling system in the converter valve.
3. The converter station cooling system of claim 1, wherein said converter valve external cooling system further comprises a cooling tower;
and the cooling tower and the water chilling unit for cooling the outside of the valve are circularly connected with the cooling system in the converter valve.
4. The converter station cooling system according to claim 1, further comprising a converter power supply system consisting of a photovoltaic lighting unit and at least one converter station transformer in parallel;
the output end of the converter power supply system is connected with the input end of the converter valve internal cooling system, the input end of the converter valve external cooling system, the input end of the cooling system integrated controller, the input end of the valve hall air conditioner and the input end of the water chilling unit.
5. A converter station cooling system according to claim 3, characterized in that said cooling tower is a closed cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024287.6U CN210745817U (en) | 2019-07-02 | 2019-07-02 | Converter station cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024287.6U CN210745817U (en) | 2019-07-02 | 2019-07-02 | Converter station cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN210745817U true CN210745817U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921024287.6U Active CN210745817U (en) | 2019-07-02 | 2019-07-02 | Converter station cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110290682A (en) * | 2019-07-02 | 2019-09-27 | 南方电网科学研究院有限责任公司 | Converter station cooling system |
| CN112152511A (en) * | 2020-09-01 | 2020-12-29 | 南方电网科学研究院有限责任公司 | Converter valve cooling system based on thermoelectric power generation |
-
2019
- 2019-07-02 CN CN201921024287.6U patent/CN210745817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110290682A (en) * | 2019-07-02 | 2019-09-27 | 南方电网科学研究院有限责任公司 | Converter station cooling system |
| CN112152511A (en) * | 2020-09-01 | 2020-12-29 | 南方电网科学研究院有限责任公司 | Converter valve cooling system based on thermoelectric power generation |
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