CN105068476A - Converter valve cooling control system - Google Patents
Converter valve cooling control system Download PDFInfo
- Publication number
- CN105068476A CN105068476A CN201510463865.6A CN201510463865A CN105068476A CN 105068476 A CN105068476 A CN 105068476A CN 201510463865 A CN201510463865 A CN 201510463865A CN 105068476 A CN105068476 A CN 105068476A
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- Prior art keywords
- control system
- cooling
- cold
- relay
- converter valve
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention relates to a converter valve cooling control system. The converter valve cooling control system comprises an inner cooling control system and an outer cooling control system, the inner cooling control system comprises a CPU and an inner cooling photoelectric communication module, and the outer cooling control system comprises an outer cooling photoelectric communication module, an interface module and an output module. The CPU controls and is connected with the output module via the inner cooling photoelectric communication module, an optical fiber, the outer cooling photoelectric communication module and the interface module, and the outer cooling control system also comprises a detection control relay KS and an intermediate relay. A normally-closed contact of the detection control relay KS drives and is connected with the intermediate relay, and a normally open contact of the intermediate relay is used to control and connect an auxiliary power supply branch of an AC load. When the sending communication of the inner cooling system and the outer cooling system goes wrong, the detection control relay is power-off, and the normally-closed contact of the detection control relay is closed, so that the AC load is in live-line operation, a spraying pump and a cooling fan entre a working state, and the stability and the reliability of a converter valve water-cooling system are improved.
Description
Technical field
The invention belongs to high-voltage dc transmission electrical domain, be specifically related to a kind of cooling control system of converter valve.
Background technology
The technology that HVDC (High Voltage Direct Current) transmission system has, economic advantages, make it in remote Large Copacity power transmission, play an important role across in interconnection of large-scale power grids and subsea cable power transmission.At present, D.C. high voltage transmission (HVDC) obtains extensive utilization in China and other country.Converter valve is the most key utility appliance of HVDC Converters, and its working condition directly affects the reliability of DC transmission system safe operation.At electric energy transmitting simultaneously, self also can produce larger power attenuation to converter valve, and thermal value is large.Therefore, need reliable cooling device to cool it, to make converter valve and direct current transportation can stable operation.
Conventional converter valve cooling device is converter valve water-cooling system, and converter valve water-cooling system is the control system that a set of complex structure, control accuracy are very high, and its nucleus equipment is CPU, I/O module, detecting sensor.System is analog signalses such as the duty of visual plant, fault-signal contact and temperature, pressure, flow, liquid level, frequencies, on deliver to special analog input acquisition module and carry out sampling, calculate, deliver to Centralized Monitoring unit and device by communication mode again, be used for that operation and control system is reliable, stable operation, simultaneously can at man-machine interface display parameter.
As shown in Figure 1, converter valve water-cooling system divides interior cold-peace external condensation system, inner cold system is responsible for the cooling work to converter valve equipment, chilled water is under main circulation pump dynamic action, heat is taken away by cooled device, thermal medium is by outdoor heat exchange equipment, and after carrying out secondary heat radiation, directly reflux main circulation loop.The electric equipments of external condensation system has many group spray pumps and cooling blower electrical equipment, entered the heat exchange coil of outdoor cooling tower or air cooler by the chilled water of heat temperature raising in converter valve water route, inner cooling water after cooling down delivers to converter valve again by water circulating pump, and circulating cooling is run always.
Because inside and outside cool equipment is distant, therefore, cold in current converter valve cooling system both domestic and external, external condensation system generally adopts separated mode to design.The valve cooling system equipment of inner cold system and external condensation system composition complete set, in order to accurately realize the operation of the outer cool equipment of interior cold-peace, general meeting is placed on controlled processing unit (CPU) in interior cool equipment or interior cold switch board, coldly no longer arranges independent CPU equipment outward.As shown in Figure 2, external condensation system parameter acquisition, display, control connect inner cold system by telecommunication optical fiber and carry out controlling and running.
When equipment failure, grid disturbance, outside destroy; inner cold system and external condensation system send communication failure; spray pump in external condensation system and cooling blower there will be part or all of shutdown; cause in inner cold system and can reach to the temperature of the chilled water that converter valve cools the upper temperature limit that converter valve equipment can bear very soon; converter valve equipment will be blocked or shut down, and then makes DC power transmission line not carry out delivery of electrical energy.The rear class power load of transmission system is shut down, and finally causes Electrical Safety fault or huge economic loss.Therefore, converter valve water-cooling system reliability of the prior art is poor.
Summary of the invention
The object of this invention is to provide a kind of outer cold control system and cooling control system of converter valve of converter valve cooling system, in order to solve the poor problem of converter valve water-cooling system reliability of the prior art.
For achieving the above object, the solution of the present invention comprises:
A kind of cooling control system of converter valve, comprises interior cold control system and outer cold control system, and described interior cold control system comprises CPU processing unit and interior cold light electricity communication module; Described outer cold control system comprises outer cold light electricity communication module, interface module, outputs module; Described CPU processing unit outputs module by described interior cold light electricity communication module, optical fiber, outer cold light electricity communication module, interface module control linkage; Described outer cold control system also comprises detection control relay (KS) and auxiliary reclay; The normally closed contact of described detection control relay (KS) drives and connects auxiliary reclay; The normally opened contact of described auxiliary reclay is used for the auxiliary power supply branch road of control linkage AC load; When inside and outside cold communication is normal, described detection control relay (KS) is charged closed, and its normally closed contact disconnects; When inside and outside cold communication abnormality, the power-off of described detection control relay (KS), its normally closed contact closes, and control described auxiliary reclay charged closed, its normally opened contact closes, its auxiliary power supply branch road charging operation of AC load for controlling.
Described outer cold control system redundancy is provided with outer cold control system (B), described outer cold control system (B) comprises detection control relay (KS '), and the rear drive of connecting of the normally closed contact of described detection control relay (KS) and detection control relay (KS ') is connected auxiliary reclay.
The invention has the beneficial effects as follows: when inner cold system and external condensation system send communication failure, the power-off of detection control relay, its normally closed contact closes, and make AC load charging operation, spray pump and cooling blower enter into duty.Simultaneously, cold CPU device sends " inside and outside cold communication failure alarm " to background system, reminds on-the-spot operation and maintenance personnel to carry out issue handling and maintenance work.Improve stability and the reliability of converter valve water-cooling system largely.
Accompanying drawing explanation
Fig. 1 is the workflow schematic diagram of converter valve water-cooling system of the prior art;
Fig. 2 is the structural representation of cooling control system of converter valve of the prior art;
Fig. 3 is the structural representation of the embodiment of the present invention 1;
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Embodiment 1
As shown in Figure 3, cooling control system of converter valve of the present invention comprises interior cold control system and outer cold control system, in cold control system comprise CPU processing unit and photoelectric communication module, outer cold control system comprises photoelectric communication module, interface module, outer cold PLC system output module, detection control relay K S, auxiliary reclay KA1-KAn.Photoelectric communication modular connection interface module, interface module connects outer cold PLC system and outputs module, outputs module control linkage detection control relay K S, and the normally closed contact of detection control relay K S drives respectively and connects auxiliary reclay KA1-KAn.
Inner cold system CPU inquires about outer cold communication condition by interior cold light electricity communication module, optical fiber, outer cold light electricity communication module, interface module, the real-time condition of outputing module detection control relay K S incessantly.When inside and outside cold control system communication is normal, the output contact outputing module is in closure state, and detection control relay K S is charged closed, and its normally closed contact is in off-state.When interruption or fault occur in inside and outside cold control system communication, the output contact outputing module is in off-state, detection control relay K S power-off, and its normally closed contact closes.Auxiliary reclay KA1-KAn coil is charged, and the normally opened contact of each relay closes, and make AC load charging operation, spray pump and cooling blower etc. enter into duty.Inner cold system CPU sends alerting signal to background system simultaneously, reminds on-the-spot operation and maintenance personnel to carry out issue handling and maintenance work.
Embodiment 2
In the above-described embodiments, described outer cold control system redundancy is provided with outer cold control system B, as shown in Figure 4, described outer cold control system B comprises detection control relay K S ', and the rear drive of connecting of described detection control relay K S and the normally closed contact of detection control relay K S ' is connected auxiliary reclay.Its duty is identical with the duty of above-described embodiment, therefore not at this repeated description.
Claims (2)
1. a cooling control system of converter valve, comprises interior cold control system and outer cold control system, and described interior cold control system comprises CPU processing unit and interior cold light electricity communication module; Described outer cold control system comprises outer cold light electricity communication module, interface module, outputs module; Described CPU processing unit outputs module by described interior cold light electricity communication module, optical fiber, outer cold light electricity communication module, interface module control linkage; It is characterized in that: described outer cold control system also comprises detection control relay (KS) and auxiliary reclay; The normally closed contact of described detection control relay (KS) drives and connects auxiliary reclay; The normally opened contact of described auxiliary reclay is used for the auxiliary power supply branch road of control linkage AC load; When inside and outside cold communication is normal, described detection control relay (KS) is charged closed, and its normally closed contact disconnects; When inside and outside cold communication abnormality, the power-off of described detection control relay (KS), its normally closed contact closes, and control described auxiliary reclay charged closed, its normally opened contact closes, its auxiliary power supply branch road charging operation of AC load for controlling.
2. cooling control system of converter valve according to claim 1, it is characterized in that: described outer cold control system redundancy is provided with outer cold control system (B), described outer cold control system (B) comprises detection control relay (KS '), and the rear drive of connecting of the normally closed contact of described detection control relay (KS) and detection control relay (KS ') is connected auxiliary reclay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463865.6A CN105068476B (en) | 2015-07-31 | 2015-07-31 | A kind of cooling control system of converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463865.6A CN105068476B (en) | 2015-07-31 | 2015-07-31 | A kind of cooling control system of converter valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105068476A true CN105068476A (en) | 2015-11-18 |
| CN105068476B CN105068476B (en) | 2017-09-29 |
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| CN201510463865.6A Active CN105068476B (en) | 2015-07-31 | 2015-07-31 | A kind of cooling control system of converter valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849352A (en) * | 2017-01-09 | 2017-06-13 | 广州高澜节能技术股份有限公司 | Converter valve Control protection system comprising light modulation communication module |
| CN109213221A (en) * | 2017-06-29 | 2019-01-15 | 许昌许继晶锐科技有限公司 | A kind of temprature control method of the outer cooling system of direct-current transmission converter valve combined type |
| CN110880905A (en) * | 2019-11-18 | 2020-03-13 | 中国南方电网有限责任公司超高压输电公司广州局 | Motor thermosensitive control system of high-voltage direct-current valve cooling system |
| CN111328252A (en) * | 2020-04-01 | 2020-06-23 | 云南电网有限责任公司楚雄供电局 | Temperature-saving device of converter station valve external cooling system |
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| US20110016893A1 (en) * | 2009-07-23 | 2011-01-27 | Warwick Graham Andrew Dawes | Redundant Cooling Method and System |
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| CN204258597U (en) * | 2014-12-04 | 2015-04-08 | 广州高澜节能技术股份有限公司 | Direct current transmission converter valve cooling system blower fan of cooling tower variable frequency control loop |
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2015
- 2015-07-31 CN CN201510463865.6A patent/CN105068476B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110016893A1 (en) * | 2009-07-23 | 2011-01-27 | Warwick Graham Andrew Dawes | Redundant Cooling Method and System |
| CN202734663U (en) * | 2012-08-23 | 2013-02-13 | 中国南方电网有限责任公司超高压输电公司 | Control system for external cooling water system of valve cooling system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849352A (en) * | 2017-01-09 | 2017-06-13 | 广州高澜节能技术股份有限公司 | Converter valve Control protection system comprising light modulation communication module |
| CN109213221A (en) * | 2017-06-29 | 2019-01-15 | 许昌许继晶锐科技有限公司 | A kind of temprature control method of the outer cooling system of direct-current transmission converter valve combined type |
| CN110880905A (en) * | 2019-11-18 | 2020-03-13 | 中国南方电网有限责任公司超高压输电公司广州局 | Motor thermosensitive control system of high-voltage direct-current valve cooling system |
| CN111328252A (en) * | 2020-04-01 | 2020-06-23 | 云南电网有限责任公司楚雄供电局 | Temperature-saving device of converter station valve external cooling system |
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| Publication number | Publication date |
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| CN105068476B (en) | 2017-09-29 |
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Address after: Xuchang City, Henan province 461000 Sunshine Avenue XJ Electric City Building 2 Patentee after: Henan Jingrui Cooling Technology Co., Ltd Address before: Xuchang City, Henan province Xuchang City Road 461000 XJ Electric City Building 2 Patentee before: XUCHANG XUJI JINGRUI TECHNOLOGY Co.,Ltd. |
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