CN102013677B - Converter valve base electronic equipment missing pulse protection and control methods and systems - Google Patents
Converter valve base electronic equipment missing pulse protection and control methods and systems Download PDFInfo
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- CN102013677B CN102013677B CN201010557215.5A CN201010557215A CN102013677B CN 102013677 B CN102013677 B CN 102013677B CN 201010557215 A CN201010557215 A CN 201010557215A CN 102013677 B CN102013677 B CN 102013677B
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Abstract
The invention belongs to the field of high-voltage direct current (HVDC) transmission and relates to converter valve base electronic equipment missing pulse protection and control methods and converter valve base electronic equipment missing pulse protection and control systems. The invention provides a triggering time sequence missing pulse safety protection policy based on valve base electronic equipment, provides a missing pulse processing flow and solves the safety hazards of HVDC converter valve overvoltage and overcurrent and the like caused by missing pulse. The methods and systems operate stably, are high in reliability and safety, and effectively avoids overvoltage, overcurrent and the like caused by missing pulse to the HVDC converter valve.
Description
Technical field
The invention belongs to high voltage direct current transmission (HVDC) field, relate to a kind of valve-based electronic device of converter valve and lose pulse protection and control method and system.
Background technology
In high voltage direct current transmission, the whole secondary supervisory control system of current conversion station utmost point control system, valve-based electronic device of converter valve and thyristor level gate pole cell formation converter valve.Gate pole unit monitors one-level thyristor, and the running status of this thyristor of real-time report valve base electronic device level.Valve base electronic device gathers all gate pole unit informations, after comprehensive judgement, reports utmost point control system.The system command of valve base electronic device receiving pole control simultaneously sends control command to gate pole unit.
Between CCP and VBE, transmission command adopts serial code transmission.And VBE data processing channel adopts two Redundancy Design.Two data processing channels of VBE carry out in real time self, comprehensively monitoring, comprise VBE and the state etc. of controlling the communicating by letter of the communicating by letter of protection system (CCP), VBE and gate leve unit, interior each electronic component of this passage.If certain passage is found this channel failure,, to the switch unit output switch amount signal " passage handover request " in CCP, switch to another passage.When if another passage also breaks down, send " tripping operation request " signal.Fig. 1 has illustrated that the passage between VBE and CCP switches and tripping operation request interface relation.
Summary of the invention
The object of the invention is to propose a kind of stable, reliability and safe, for realizing, valve-based electronic device of converter valve lost to pulse implement effectively protection control strategy.The present invention proposes valve base electronic device and lose a kind of safe protection strategy of pulse for triggering sequential, what proposed a kind of innovation loses burst process flow process, has solved because losing pulse and has caused the potential safety hazards such as HVDC converter valve overvoltage, overcurrent.
A kind of valve-based electronic device of converter valve of the present invention is lost pulse protection and control method, comprises the following steps:
(1) valve base electronic device VBE sense channel failure cause, when VBE moves, two data processing channels carry out real time monitoring to self, comprise VBE with control the communicating by letter of protection system, VBE and gate leve unit GU communicate by letter and this passage in the state of each electronic component, the inner interpolation of VBE calibration position verifies whether channel failure causes by losing pulse; If not valve base electronic device VBE is to controlling protection system CCP transmitting system switching request signal Fail; If so, continue to receive the trigger impulse sending by controlling protection system CCP, transmitting system switching request signal Fail not, valve base electronic device VBE continues to control converter valve and carries out work;
(2) if valve base electronic device VBE loses continuously 4 cycles when controlling the trigger impulse that protection system CCP sends, valve base electronic device VBE is to controlling protection system CCP transmitting system switching request signal Fail.
The invention allows for a kind of valve-based electronic device of converter valve of above-mentioned control method that uses and lose pulse protection and control system, valve base electronic device VBE and outside interface comprise: with control protection system CCP interface, with the interface of gate leve unit GU, with the interface of cooling system leakage monitoring device and with the interface of power supply; Valve base electronic device VBE adopts optical cable to be connected with optical fiber with controlling between protection system, and light signal and cable signal all adopt photoelectricity quarantine measures to isolate; Wherein valve base electronic device VBE comprises with the interface of controlling protection system CCP: channel selecting, by controlling protection system CCP, export to valve base electronic device VBE, in order to select the main channel of VBE and from passage; Valve base electronic device VBE locking, exports to valve base electronic device VBE by controlling protection system CCP, in order to release or locking valve base electronic device VBE; Channel monitoring, is exported to and is controlled protection system CCP by valve base electronic device VBE, return channel selection information; Valve base electronic device VBE handover request, is exported to and is controlled protection system CCP by valve base electronic device VBE, and when master-slave system need to be switched, valve base electronic device VBE exports this signal; Tripping operation request, valve base electronic device VBE exports to and controls protection system CCP, when valve base electronic device VBE detects when abnormal, exports to and controls protection system CCP; Valve base electronic device VBE has also comprised that with control protection system CCP interface controlling protection system CCP sends the interface relationship of hot word and trigger word to valve base electronic device VBE simultaneously.
The invention has the beneficial effects as follows:
1, method and system of the present invention have solved the potential safety hazard of original processing policy.
2, method and system of the present invention only need be changed the internal processes of VBE coding/decoding unit, and alter mode is simple, have saved cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 shows according to the VBE of method and system of the present invention and the interface relationship between CCP.
Fig. 2 shows method and system VBE of the present invention at the flow chart of losing pulse post-processing approach.
Embodiment
When control protection system (CCP) is lost the trigger impulse of some or a plurality of valves, the pulse that the interface arrangement of VBE and CCP sends to VBE only has 3 or trigger impulse serial trigger word still less.Here it is loses pulse phenomenon.
VBE is original is fast switching system to losing the processing policy of pulse phenomenon, detects while losing trigger impulse, and VBE is to CCP transmitting system switching request signal.In a cycle (20ms), the angle of flow of each thyristor level of 12 brachium pontis is 30 degree, and ON time is about 1.67ms.VBE receives that can trigger word to be detected immediately after the serial trigger word of only having three trigger impulses incorrect, and to CCP sendaisle handover request (VBE Fail) signal, passage switches and will in 6-7ms, complete, if system is normal, handover success, VBE main channel is switched to from passage.If continue pulse-losing or other faults from system, cause when also unavailable, VBE sends tripping operation request (VBE Trip) signal to CCP.The 6-7ms switching at passage is in the time, ought to four valve of conducting, and other valves do not receive trigger impulse in correct angle of flow.
In triggered as normal situation, ± 660kV direct-current transmission converter valve direct voltage peak value is ± 660kV, direct current is about 1.67kA, under abnormal condition, lose pulse after direct current peak forward voltage be about 998kV, negative peak voltage for-700kV, peak current is about 6.5kA.
Solve this phenomenon and can use the processing mode of Fig. 2.If detect while losing trigger impulse and will control converter valve by the trigger word receiving at VBE, and transmitting system switching request signal not is not done any processing.Fig. 2 shows VBE at the flow chart of losing pulse post-processing approach.While occurring in the trigger word of sending at DC control and protection system losing continuously the trigger impulse of single valve, if this phenomenon duration for being less than 80ms (4 cycles), VBE receives the trigger word of losing single valve trigger impulse, continues control converter valve; If the duration reaches 80ms, VBE sends switched system request (Fail) signal.This mode is processed and is lost after pulse, and direct current crest voltage, electric current all meet the requirements, and method is simple, only needs to change the internal control method of VBE, cost-saving.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out to one skilled in the art suitable replacement or revise.Exemplary embodiment is only illustrative, rather than the restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (1)
1. valve-based electronic device of converter valve is lost a pulse protection and control method, it is characterized in that comprising the following steps:
(1) valve base electronic device VBE sense channel failure cause, when VBE moves, two data processing channels carry out real time monitoring to self, comprise VBE with control the communicating by letter of protection system CCP, VBE and gate leve unit GU communicate by letter and this passage in the state of each electronic component, the inner interpolation of VBE calibration position verifies whether channel failure causes by losing pulse; If not valve base electronic device VBE is to controlling protection system CCP transmitting system switching request signal Fail; If so, continue to receive the trigger impulse sending by controlling protection system CCP, transmitting system switching request signal Fail not, valve base electronic device VBE continues to control converter valve and carries out work;
(2) if valve base electronic device VBE loses continuously 4 cycles when controlling the trigger impulse that protection system CCP sends, valve base electronic device VBE is to controlling protection system CCP transmitting system switching request signal Fail;
Valve base electronic device VBE and outside interface comprise: with control protection system CCP interface, with the interface of gate leve unit GU, with the interface of cooling system leakage monitoring device and with the interface of power supply; Valve base electronic device VBE adopts optical cable to be connected with optical fiber with controlling between protection system CCP, and light signal and cable signal all adopt photoelectricity quarantine measures to isolate; Wherein valve base electronic device VBE comprises with the interface of controlling protection system CCP: channel selecting, by controlling protection system CCP, export to valve base electronic device VBE, in order to select the main channel of VBE and from passage; Valve base electronic device VBE locking, exports to valve base electronic device VBE by controlling protection system CCP, in order to release or locking valve base electronic device VBE; Channel monitoring, is exported to and is controlled protection system CCP by valve base electronic device VBE, return channel selection information; Valve base electronic device VBE handover request, is exported to and is controlled protection system CCP by valve base electronic device VBE, and when master-slave system need to be switched, valve base electronic device VBE exports this signal; Tripping operation request, valve base electronic device VBE exports to and controls protection system CCP, when valve base electronic device VBE detects when abnormal, exports to and controls protection system CCP; Valve base electronic device VBE has also comprised that with control protection system CCP interface controlling protection system CCP sends the interface relationship of hot word and trigger word to valve base electronic device VBE simultaneously.
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| CN201010557215.5A CN102013677B (en) | 2010-11-24 | 2010-11-24 | Converter valve base electronic equipment missing pulse protection and control methods and systems |
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| CN201010557215.5A CN102013677B (en) | 2010-11-24 | 2010-11-24 | Converter valve base electronic equipment missing pulse protection and control methods and systems |
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| CN102013677A CN102013677A (en) | 2011-04-13 |
| CN102013677B true CN102013677B (en) | 2014-03-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219798B (en) * | 2013-03-25 | 2015-03-25 | 国网智能电网研究院 | Direct-current transmission converter valve control protection system and control protection method thereof |
| CN105466650A (en) * | 2014-09-28 | 2016-04-06 | 国家电网公司 | System for monitoring DC converter valve water leakage |
| CN105548726B (en) * | 2015-12-09 | 2018-09-14 | 许继电气股份有限公司 | The diagnostic method of converter valve trigger pulse in a kind of HVDC transmission system |
| CN106814665B (en) * | 2017-01-19 | 2019-05-21 | 许继电气股份有限公司 | DC transmission system control mode switch method and system |
| CN112054486B (en) * | 2020-09-10 | 2022-08-05 | 国家电网有限公司 | Valve base control protection method |
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| CN1767306A (en) * | 2005-09-13 | 2006-05-03 | 中国电力科学研究院 | Photoelectricity triggering and detecting system for static reactive-load compensation equipment based on multi-mode optical fibre |
| CN1881731A (en) * | 2005-06-17 | 2006-12-20 | 许继集团有限公司 | Signal transmission method between two control protection system and two valve base electronic equipment of convertor station |
| CN101741225A (en) * | 2009-12-23 | 2010-06-16 | 中国电力科学研究院 | Novel valve base electronic device of direct current converter valve |
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| CN1881731A (en) * | 2005-06-17 | 2006-12-20 | 许继集团有限公司 | Signal transmission method between two control protection system and two valve base electronic equipment of convertor station |
| CN1767306A (en) * | 2005-09-13 | 2006-05-03 | 中国电力科学研究院 | Photoelectricity triggering and detecting system for static reactive-load compensation equipment based on multi-mode optical fibre |
| CN101741225A (en) * | 2009-12-23 | 2010-06-16 | 中国电力科学研究院 | Novel valve base electronic device of direct current converter valve |
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