CN105068476B - A kind of cooling control system of converter valve - Google Patents
A kind of cooling control system of converter valve Download PDFInfo
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- CN105068476B CN105068476B CN201510463865.6A CN201510463865A CN105068476B CN 105068476 B CN105068476 B CN 105068476B CN 201510463865 A CN201510463865 A CN 201510463865A CN 105068476 B CN105068476 B CN 105068476B
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- control system
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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
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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
- 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 kind of cooling control system of converter valve, including interior cold control system and outer cold control system, the interior cold control system includes CPU processing units and the electric communication module of interior cold light；The outer cold control system includes outer cold light electric communication module, interface module, outputs module；The CPU processing units control connection to output module by the electric communication module of the interior cold light, optical fiber, the electric communication module of outer cold light, interface module；The outer cold control system also includes detection control relay (KS) and auxiliary reclay；The normally-closed contact drive connection auxiliary reclay of the detection control relay (KS)；The normally opened contact of the auxiliary reclay is used for the auxiliary power supply branch road for controlling connection AC load.When inner cold system and external condensation system send communication failure, detection control relay power-off, its normally-closed contact closure so that AC load charging operation, spray pump and cooling blower enter working condition.Improve the stability and reliability of converter valve water-cooling system.
Description
Technical field
The invention belongs to high-voltage dc transmission electrical domain, and in particular to a kind of cooling control system of converter valve.
Background technology
Technology that HVDC transmission system has, economic advantages, make it in remote Large Copacity power transmission, across interconnection of large-scale power grids
Played an important role with terms of submarine cable power transmission.At present, D.C. high voltage transmission (HVDC) is in China and other national
Extensive utilization is arrived.Converter valve is the most key auxiliary equipment of HVDC Converters, and its working condition is direct
Affect the reliability of DC transmission system safe operation.In transmission electric energy simultaneously, itself can also produce larger work(to converter valve
Rate is lost, and caloric value is big.Accordingly, it would be desirable to reliable cooling device is cooled down to it, so that converter valve and direct current transportation can be with
Stable operation.
Conventional converter valve cooling device is converter valve water-cooling system, and converter valve water-cooling system is a set of complicated, control
Precision processed very high control system, its nucleus equipment is CPU, I/O module, detection sensor.Work of the system visual plant
The analog signalses such as state, fault-signal contact and temperature, pressure, flow, liquid level, frequency, above deliver to special analog quantity
Input acquisition module is sampled, calculated, by communication mode Centralized Monitoring unit and device being delivered to again, for operating and controlling
System is reliable, stable operation, while can be in man-machine interface display parameters.
As shown in figure 1, cold and external condensation system in converter valve water-cooling system point, inner cold system is responsible for the cold of converter valve equipment
But work, cooling water takes away heat, thermal medium is set by outdoor heat exchange under main circulation pump dynamic action by cooled device
It is standby, carry out after secondary radiating, directly flow back main circulation loop.The electric equipments of external condensation system have multigroup spray pump and cooling
Blower fan electrical equipment, the cooling water being heated up in converter valve water route enters the heat exchange disk of outdoor cooling tower or air cooler
Pipe, the interior 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, interior cold, external condensation system in current converter valve cooling system both domestic and external
Typically it is designed using separated mode.Inner cold system and external condensation system constitute the valve cooling system equipment of complete set, are
The operation of cold and outer cool equipment, can typically be placed on control processing unit (CPU) interior cool equipment or interior cold in accurate realization
It is outer that cold single CPU device is no longer set in switch board.As shown in Fig. 2 external condensation system parameter acquisition, display, control are by logical
Letter optical fiber connection inner cold system is controlled and run.
In the case of equipment fault, grid disturbance, external force destruction, inner cold system sends communication failure with external condensation system,
Part or all of shutdown occurs in spray pump and cooling blower in external condensation system, causes cold to converter valve progress in inner cold system
But the temperature of cooling water can quickly reach the temperature upper limit that converter valve equipment can be born, converter valve equipment will be blocked or
Shut down, and then cause DC power transmission line from carrying out electric energy transmission.The rear class power load of transmission system is shut down, and is ultimately caused
Electrical Safety failure or huge economic loss.Therefore, converter valve water-cooling system reliability of the prior art is poor.
The content of the invention
It is an object of the invention to provide a kind of outer cold control system and converter valve cooling the control system of converter valve cooling system
System, to solve the problem of converter valve water-cooling system reliability of the prior art is poor.
To achieve the above object, the solution of the present invention includes：
A kind of cooling control system of converter valve, including interior cold control system and outer cold control system, the interior cold control system
System includes CPU processing units and the electric communication module of interior cold light；The outer cold control system includes the electric communication module of outer cold light, interface
Module, output module；The CPU processing units by the electric communication module of the interior cold light, optical fiber, the electric communication module of outer cold light,
Module is outputed in interface module control connection；The outer cold control system also includes detection control relay (KS) and middle relay
Device；The normally-closed contact drive connection auxiliary reclay of the detection control relay (KS)；The normally opened of the auxiliary reclay touches
Point is used for the auxiliary power supply branch road for controlling connection AC load；When it is inside and outside it is cold communication it is normal when, the detection control relay
(KS) powered closure, its normally-closed contact disconnects；When inside and outside cold communication abnormality, detection control relay (KS) power-off, its
Normally-closed contact is closed, and controls the powered closure of auxiliary reclay, and its normally opened contact is closed, and it is used for the AC load controlled
Auxiliary power supply branch road charging operation.
The outer cold control system redundancy is provided with cold control system (B) outside cold control system (B) outside second, described second
Including the second detection control relay (KS '), the detection control relay (KS) and the second detection control relay (KS ')
Drive connection auxiliary reclay after normally-closed contact series connection.
The beneficial effects of the invention are as follows：When inner cold system and external condensation system send communication failure, control relay is detected
Power-off, its normally-closed contact closure so that AC load charging operation, spray pump and cooling blower enter working condition.Simultaneously
Interior cold CPU devices send " inside and outside cold communication failure is alerted " to background system, remind scene operation and attendant to carry out problem
Processing and maintenance work.Largely improve the stability and reliability of converter valve water-cooling system.
Brief description of the drawings
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
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 3, the cooling control system of converter valve of the present invention includes interior cold control system and outer cold control system, it is interior
Cold control system includes CPU processing units and photoelectric communication module, and outer cold control system includes photoelectric communication module, interface mould
Block, outer cold PLC system output module, detection control relay KS, auxiliary reclay KA1-KAn.Photoelectric communication module connects
Mouth mold block, the outer cold PLC system of interface module connection outputs module, outputs module control connecting detection control relay KS, detection
Control relay KS normally-closed contact difference drive connection auxiliary reclay KA1-KAn.
Inner cold system CPU by the electric communication module of interior cold light, optical fiber, outer cold light electric communication module, interface module, output mould
Block detects control relay KS real-time condition to inquire about outer cold communication condition incessantly.When inside and outside cold control system is communicated
When normal, the output contact for outputing module is in closure state, detects the powered closures of control relay KS, and its normally-closed contact is in
Off-state.When interruption or failure occur for inside and outside cold control system communication, the output contact for outputing module is in disconnection shape
State, the KS power-off of detection control relay, its normally-closed contact closure.Auxiliary reclay KA1-KAn coils are powered, each relay
Normally opened contact is closed so that AC load charging operation, spray pump and cooling blower etc. enter working condition.Cold system in simultaneously
System CPU sends alarm signal to background system, reminds scene operation and attendant to carry out issue handling and maintenance work.
Embodiment 2
In the above-described embodiments, the outer cold control system redundancy is provided with cold control system B outside second, as shown in figure 4,
Cold control system B includes the second detection control relay KS ', the detection control relay KS and the second detection outside described second
Drive connection auxiliary reclay after control relay KS ' normally-closed contact series connection.The work of its working condition and above-described embodiment
State is identical, therefore not in this repeated description.
Claims (2)
1. a kind of cooling control system of converter valve, including interior cold control system and outer cold control system, the interior cold control system
Including CPU processing units and the electric communication module of interior cold light；The outer cold control system includes the electric communication module of outer cold light, interface mould
Block, output module；The CPU processing units by the electric communication module of the interior cold light, optical fiber, the electric communication module of outer cold light, connect
Module is outputed in the control connection of mouth mold block；It is characterized in that：The outer cold control system also include detection control relay (KS) and
Auxiliary reclay；The normally-closed contact drive connection auxiliary reclay of the detection control relay (KS)；The auxiliary reclay
Normally opened contact be used for control connection AC load auxiliary power supply branch road；When inside and outside cold communication is normal, detection control
Relay (KS) powered closure, its normally-closed contact disconnects；When inside and outside cold communication abnormality, the detection control relay (KS) is broken
Electricity, its normally-closed contact closure controls the powered closure of auxiliary reclay, and its normally opened contact is closed, and it is used for the exchange controlled
The auxiliary power supply branch road charging operation of load.
2. cooling control system of converter valve according to claim 1, it is characterised in that：The outer cold control system redundancy is set
Being equipped with cold control system (B) outside cold control system (B) outside second, described second includes the second detection control relay (KS '), institute
State drive connection centre relay after detection control relay (KS) is connected with the normally-closed contact of the second detection control relay (KS ')
Device.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN105068476A CN105068476A (en) | 2015-11-18 |
| CN105068476B true 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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Families Citing this family (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 |
| CN109213221B (en) * | 2017-06-29 | 2022-04-01 | 河南晶锐冷却技术股份有限公司 | Temperature control method of direct-current power transmission converter valve combined type external cooling system |
| 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 |
Citations (6)
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| 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 |
| CN103760882A (en) * | 2013-11-06 | 2014-04-30 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Complete redundancy testing apparatus control system of direct-current valve cooling unit |
| CN203589706U (en) * | 2013-11-29 | 2014-05-07 | 国家电网公司 | Protection device of high voltage direct current (HVDC) converter valve |
| CN104122790A (en) * | 2013-04-27 | 2014-10-29 | 杭州市电力局 | Cooling system |
| CN104330275A (en) * | 2014-11-06 | 2015-02-04 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Fault analyzing and diagnosing device and method of converter valve cooling system |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110016893A1 (en) * | 2009-07-23 | 2011-01-27 | Warwick Graham Andrew Dawes | Redundant Cooling Method and System |
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- 2015-07-31 CN CN201510463865.6A patent/CN105068476B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104122790A (en) * | 2013-04-27 | 2014-10-29 | 杭州市电力局 | Cooling system |
| CN103760882A (en) * | 2013-11-06 | 2014-04-30 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Complete redundancy testing apparatus control system of direct-current valve cooling unit |
| CN203589706U (en) * | 2013-11-29 | 2014-05-07 | 国家电网公司 | Protection device of high voltage direct current (HVDC) converter valve |
| CN104330275A (en) * | 2014-11-06 | 2015-02-04 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Fault analyzing and diagnosing device and method of converter valve cooling system |
| 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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| CN105068476A (en) | 2015-11-18 |
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| CP03 | Change of name, title or address |
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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