CN101951023A - Switch locking method of high-voltage direct current convertor station - Google Patents
Switch locking method of high-voltage direct current convertor station Download PDFInfo
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- CN101951023A CN101951023A CN 201010245143 CN201010245143A CN101951023A CN 101951023 A CN101951023 A CN 101951023A CN 201010245143 CN201010245143 CN 201010245143 CN 201010245143 A CN201010245143 A CN 201010245143A CN 101951023 A CN101951023 A CN 101951023A
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Abstract
The invention provides a switch locking method of a high-voltage direct current convertor station, comprising the following steps of: realizing switch locking on an I/O interface board operated by a direct current control switch in a direct current control protection system, analyzing commands, such as a switch closing command and the like from each control protection host, by a communication module, sending the commands to a CPU module, and receiving commands of controlling and protecting each subsystem send by a field bus by the CPU module; outputting closing signals to switch equipment by connecting the switch closing command and the input end of an and gate; arranging an RS trigger to be connected with received switch locking judgment; when the I/O interface board receives any one switch locking command but does not receive an unlocking command, outputting the switch signals needed locking by the Q end of the RS trigger; when receiving the unlocking command by the I/O interface board, prohibiting outputting the locked switch signals by the Q end of the RS trigger, and connecting the Q end and the other input end of the and gate through a not gate. The invention protects the safety of primary equipment of the direct current convertor station and has simple realization method without increasing the design complexity of the control protection system.
Description
Technical field
The present invention relates in DC converter station control protection system, split in control method, especially the DC control protection system to switch and close the implementation method that the inlet wire locking guarantees device security.
Background technology
High voltage direct current transmission is because its distinctive advantage as long distance, high-power, asynchronous networking, power quick adjustment, trend controllability, transmission of electricity economy etc., has obtained application widely.
Because the investment of HVDC (High Voltage Direct Current) transmission system primary equipment is big, need the switch of alternating-current field, alternating current filter field, dc fields is locked under specific situation, to guarantee the safety of current conversion station switch itself and other primary equipments, prevent that misoperation from impacting to equipment, shorten the useful life of equipment.
There is following several situation to lock to service entrance switch, to guarantee the safety of equipment:
1) change of current of alternating-current field becomes service entrance switch needs locking under the situation of direct current system emergency outage, change of current change protection action, direct current protecting action, No switching on is to prevent that misoperation from exchanging rheology, the charging of valve group impacts.
2) service entrance switch of alternating current filter group locking when big group of bus differential protection action of filter, No switching on is to prevent that misoperation from causing the filter bus to charge once more and causing the accident.
3) switch of alternating current filter group is in the action of big group of bus differential protection of filter, or locking during the protection action of filter group, and No switching on is to prevent that misoperation from causing filter group to charge once more and causing the accident.
4) the dc fields utmost point 1, the utmost point 2 neutral bus switches (NBS1, NBS2); stand ground switch (NBGS); metallic return change over switch (MRTB); ground return circuit change over switch (GRTS); if can't cut off direct current when disconnecting, after direct current protecting carries out reclosing to it, need locking; forbid separating brake, switch is caused damage with the operation that prevents once more switch-dividing.
Whether the method for conventional switch locking, part are can operate by the artificial judgment switch, and this just increases operations staff's workload, and has certain misoperation risk; Some is to adopt the signal of gathering the influential switching manipulation of institute at the function place of each control switch, and judging whether through interlocking can console switch, and this method needs the semaphore gathered big concerning the control protection system, the increase system complexity.
Summary of the invention
The objective of the invention is: a kind of method of protecting primary equipment safety in the DC converter station is provided; under the particular case of current conversion station operation; the service entrance switch of lock-related prevents that misoperation from causing damage to primary equipment in the current conversion station, saves the investment of current conversion station primary equipment.Under the various specific run situations of DC converter station,,, forbid that the operations staff is manual or control protection system automatically to switching manipulation by in the DC control protection system, related switch being locked for the relevant primary equipment of protection current conversion station.
Technical scheme provided by the invention is: realize the switch locking on the I/O interface board of the DC control switch operation in the DC control protection system, described I/O interface board is by the CPU module, the fieldbus input module, the fieldbus output module, communication module and switching value output module are formed, the fieldbus input module receives communication packet from fieldbus, communication module is resolved the switch reclosing command from each control protection main frame, the switch lock instruction, instruction unlocks, and send these instructions to the CPU module, it is characterized in that: the CPU module receives the switch reclosing command that each subsystem is protected in the control of transmitting on the fieldbus, switch lock instruction and unlock command, switch close a floodgate and bring in the switching signal of exporting to switchgear by connecting with door one input; Be provided with switch locking, unlock command judgement that rest-set flip-flop receives, draw the signal of whether wanting locking switch; When the I/O interface board is received any one switch lock instruction, and do not receive unlock command, then the output of the Q of rest-set flip-flop end needs the locking switch signal; When the I/O interface board is received unlock command, then the Q of rest-set flip-flop end forbids exporting the locking switch signal, and the Q end connects another input described and door by not gate.
The lock function of switch has two kinds: first kind of locking for alternating-current field switch, alternating current filter switch, switch be the back No switching on separately; Second kind is the locking of dc fields switch, forbids after the switch reclosures separately.
The triggering of switch lock function and the function of releasing realize that be divided into two kinds: first method is manual triggers and releasing in the upper strata main control system of control protection system, control protected subsystem for second kind and trigger automatically for each.
The manual triggers of switch lock function and releasing, be on control system SCADA interface, to send by the operations staff, by the main control system of station LAN network transmission to this switch region, handle by main control system and will instruct, be issued to locking switch on the I/O interface board that control switch operates by fieldbus.
The automatic triggering of switch lock function is distributed in the main control system of respectively controlling protected subsystem, judges the switch that needs lock by main control system automatically according to ruuning situation, lock instruction is issued on the I/O interface board of controlling respective switch lock.
Communication situation between the I/O control of main control system and switch has two kinds: the one, and there is fieldbus directly to be connected between the I/O control board of main control system and switch, this situation lock instruction will directly be issued to the I/O integrated circuit board; Another kind be main control system with the I/O control board of switch between do not have fieldbus directly to be connected, this situation lock instruction then needs to transmit by other main control system.
Beneficial effect of the present invention: adopt the present invention can reduce whether manipulable workload of artificial judgment switch, avoided misoperation, reduce the risk that primary equipment is damaged to switch.By switch control board card lock, each controls the distributed triggering of protected subsystem simultaneously, has guaranteed the flexible, reliable of switch lock function, and does not increase the complexity of control protection system, does not need to increase extra control appliance.
Description of drawings
Fig. 1 realizes logic diagram for the switch lock function;
Fig. 2 is a switch lock function manual triggers schematic diagram;
Fig. 3 is switch lock function communication structure schematic diagram in the control protection system;
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
In the present invention, the realization of switch lock function is the bottom in the DC control protection system, promptly directly realizes on the I/O interface board of control switch operation.The I/O interface board is made up of CPU module, fieldbus input module, fieldbus output module, communication module and switching value output module.The fieldbus input module receives communication packet from fieldbus, and communication module is resolved switch reclosing command, switch lock instruction, the instruction that unlocks from each control protection main frame, and sends these instructions to the CPU module.
The switch of CPU module locks logic as shown in Figure 1, and the CPU module receives switch reclosing command, switch lock instruction and the unlock command that each subsystem is protected in the control of transmitting on the fieldbus.Rest-set flip-flop is judged according to the switch locking, the unlock command that receive, is drawn and whether want locking switch.When the I/O interface board is received any one switch lock instruction, and do not receive unlock command, then the output of the Q of rest-set flip-flop end needs the locking switch signal; When the I/O interface board is received unlock command, then the Q of rest-set flip-flop end forbids exporting the locking switch signal.
If need locking switch, then the locking switch signal will block the switch reclosing command, make it can not be issued to switchgear No. one time, and issue the signal of No switching on for switchgear by the switching value output module locking switch signal, guaranteed that like this a switchgear can not closed; If do not need locking switch, then the switch reclosing command can be issued to switchgear No. one time, and cancel the signal that issues the switchgear No switching on, and switch is free operant as required.
The DC control protection system is the system of a complexity, is made of the equipment of zones of different in control defencive function that each subsystem responsible is different and the control current conversion station a plurality of subsystems.Each subsystem has main control system and the I/O interface equipment of oneself, links to each other by fieldbus.Have fieldbus to link to each other between the main control system of different sub-systems, the part main control system has fieldbus to link to each other with the I/O interface equipment of other subsystems.
The triggering of switch lock function of the present invention and releasing are to realize that be divided into two kinds: first method is manual triggers and releasing in the upper strata main control system of control protection system, control protected subsystem for second kind and trigger automatically for each.
As shown in Figure 2, the manual triggers of switch lock function and releasing, be on control system SCADA interface, to send by the operations staff, by the main control system of station LAN network transmission to this switch region, handle to instruct by main control system and pass through fieldbus, be issued on the I/O interface board of control switch operation, the order that is sent locking switch by the I/O plate removes to lock corresponding switchgear.
The automatic triggering function of switch locking is distributed in each subsystem, belongs to distributed control mode.By the main control system of each control protected subsystem, judge the switch of needs lockings automatically according to ruuning situation, lock instruction is issued on the I/O interface board of control respective switch and locks.
As shown in Figure 3, the communication situation between the I/O of main control system and the switch control has two kinds:
The one, there is fieldbus directly to be connected between the I/O control board of main control system and switch, this situation lock instruction will directly be issued to the I/O integrated circuit board.As the control defencive function of main control system among the figure 1 according to itself; need the switchgear X that main control system m is had jurisdiction over be locked; and the control I/O plate of this switchgear X has fieldbus directly to link to each other with main control system 1, so main control system 1 directly is issued to its control I/O plate with the instruction of locking switch equipment X.
Another kind be main control system with the I/O control board of switch between do not have fieldbus directly to be connected, this situation lock instruction then needs to be forwarded to corresponding I/O integrated circuit board by other main control system.As the control defencive function of main control system m among Fig. 3 according to itself; need the switchgear Y that main control system n is had jurisdiction over be locked; and the control I/O plate of this switchgear Y does not have fieldbus directly to link to each other with main control system 1; so main control system m needs the instruction of locking switch equipment Y is sent to main control system n, lock instruction is forwarded to indirectly its control I/O plate of switchgear Y by main control system n.
Claims (5)
1. the switch locking means of HVDC (High Voltage Direct Current) converter substation, realize the switch locking on the I/O interface board of the DC control switch operation in the DC control protection system, described I/O interface board is by the CPU module, the fieldbus input module, the fieldbus output module, communication module and switching value output module are formed, the fieldbus input module receives communication packet from fieldbus, communication module is resolved the switch reclosing command from each control protection main frame, the switch lock instruction, instruction unlocks, and send these instructions to the CPU module, it is characterized in that: the CPU module receives the switch reclosing command that each subsystem is protected in the control of transmitting on the fieldbus, switch lock instruction and unlock command; The switch reclosing command is brought in the switching signal of exporting to switchgear by connecting with door one input; Be provided with switch locking, unlock command judgement that rest-set flip-flop receives, draw the signal of whether wanting locking switch; When the I/O interface board is received any one switch lock instruction, and do not receive unlock command, then the output of the Q of rest-set flip-flop end needs the locking switch signal; When the I/O interface board is received unlock command, then the Q of rest-set flip-flop end forbids exporting the locking switch signal, and the Q end connects another input described and door by not gate.
2. the switch locking means of HVDC (High Voltage Direct Current) converter substation according to claim 1, it is characterized in that: if need locking switch, then the switch locking signal will be blocked the switch reclosing command, make it can not be issued to switchgear No. one time, and issue the signal of No switching on for switchgear by the switching value output module switch locking signal; If do not need locking switch, then the switch reclosing command can be issued to switchgear No. one time, and cancel the signal that issues the switchgear No switching on, and switch is free operant as required.
3. the switch locking means of HVDC (High Voltage Direct Current) converter substation as claimed in claim 1 or 2 is characterized in that: the triggering of switch lock function is to realize in the main control system of the upper strata of DC control protection system with removing.
4. the switch locking means of HVDC (High Voltage Direct Current) converter substation as claimed in claim 3, it is characterized in that: two kinds of implementation methods are arranged: first method is manual triggers and releasing; Second method triggers naturally for each control protected subsystem; Send at control system SCADA interface by the operations staff, to other switch region main control systems, handle by main control system and will instruct, be issued to locking switch on the I/O interface board that control switch operates by fieldbus by current conversion station LAN network transmission.
5. the switch locking means of HVDC (High Voltage Direct Current) converter substation as claimed in claim 3; it is characterized in that: the automatic triggering of switch lock function; be distributed in the main control system of respectively controlling protected subsystem; automatically judge the switch of needs lockings by main control system according to ruuning situation, lock instruction is issued on the I/O interface board of control respective switch and locks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245143 CN101951023B (en) | 2010-08-04 | 2010-08-04 | Switch locking method of high-voltage direct current convertor station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010245143 CN101951023B (en) | 2010-08-04 | 2010-08-04 | Switch locking method of high-voltage direct current convertor station |
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| CN101951023A true CN101951023A (en) | 2011-01-19 |
| CN101951023B CN101951023B (en) | 2012-06-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902254A (en) * | 2012-10-12 | 2013-01-30 | 深圳市航盛电子股份有限公司 | PKE (passive keyless entry) vehicle power control system and control method |
| CN104569674A (en) * | 2014-12-31 | 2015-04-29 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Device for controlling and protecting operating state of single-phase detection equipment |
| CN105022421A (en) * | 2014-04-29 | 2015-11-04 | 国网山西省电力公司电力科学研究院 | Water filling valve position control system for large-scale thermal power unit auxiliary equipment cooling water system |
| CN105743079A (en) * | 2016-04-07 | 2016-07-06 | 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 | System for preventing automatic unlocking of high-voltage DC engineering |
| CN107918430A (en) * | 2017-12-07 | 2018-04-17 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of DC control protective device for realizing switching value circuit on-bne repair |
| CN111043375A (en) * | 2019-11-20 | 2020-04-21 | 重庆金维实业有限责任公司 | Auxiliary oxygen flow interlocking control system of acetylene reaction furnace in process of preparing acetylene from natural gas |
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| CN101383509A (en) * | 2008-10-17 | 2009-03-11 | 南方电网技术研究中心 | Extra-high voltage DC power transmission control system configuring method |
| CN101714776A (en) * | 2008-10-08 | 2010-05-26 | 国网运行有限公司上海超高压管理处 | 10KV station electric control system of convertor station adopting selecting 2 from 3 logic |
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| US5880539A (en) * | 1996-12-05 | 1999-03-09 | Silitek Corporation | Electromagnet induced switch |
| CN101359828A (en) * | 2008-09-28 | 2009-02-04 | 华北电力大学（保定） | High-voltage DC transmission starting and operating method |
| CN101714776A (en) * | 2008-10-08 | 2010-05-26 | 国网运行有限公司上海超高压管理处 | 10KV station electric control system of convertor station adopting selecting 2 from 3 logic |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902254A (en) * | 2012-10-12 | 2013-01-30 | 深圳市航盛电子股份有限公司 | PKE (passive keyless entry) vehicle power control system and control method |
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| CN105022421A (en) * | 2014-04-29 | 2015-11-04 | 国网山西省电力公司电力科学研究院 | Water filling valve position control system for large-scale thermal power unit auxiliary equipment cooling water system |
| CN105022421B (en) * | 2014-04-29 | 2018-05-25 | 国网山西省电力公司电力科学研究院 | A kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system |
| CN104569674A (en) * | 2014-12-31 | 2015-04-29 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Device for controlling and protecting operating state of single-phase detection equipment |
| CN104569674B (en) * | 2014-12-31 | 2017-07-21 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of control protective unit for detecting single-phase equipment running status |
| CN105743079A (en) * | 2016-04-07 | 2016-07-06 | 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 | System for preventing automatic unlocking of high-voltage DC engineering |
| CN105743079B (en) * | 2016-04-07 | 2018-01-16 | 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 | One kind prevents high voltage DC engineering automatic unlocking system |
| CN107918430A (en) * | 2017-12-07 | 2018-04-17 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of DC control protective device for realizing switching value circuit on-bne repair |
| CN111043375A (en) * | 2019-11-20 | 2020-04-21 | 重庆金维实业有限责任公司 | Auxiliary oxygen flow interlocking control system of acetylene reaction furnace in process of preparing acetylene from natural gas |
| CN111043375B (en) * | 2019-11-20 | 2021-08-03 | 重庆金维实业有限责任公司 | Auxiliary oxygen flow interlocking control system of acetylene reaction furnace in process of preparing acetylene from natural gas |
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| CN101951023B (en) | 2012-06-20 |
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