CN102013677A - 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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- CN102013677A CN102013677A CN2010105572155A CN201010557215A CN102013677A CN 102013677 A CN102013677 A CN 102013677A CN 2010105572155 A CN2010105572155 A CN 2010105572155A CN 201010557215 A CN201010557215 A CN 201010557215A CN 102013677 A CN102013677 A CN 102013677A
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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 converter valve valve base electronic equipment and lose pulse protection and control method and system.
Background technology
In high voltage direct current transmission, current conversion station utmost point control system, converter valve valve base electronic equipment and thyristor level gate pole unit constitute the whole secondary supervisory control system of 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, reports utmost point control system after the comprehensive judgement.The system command of valve base electronic device receiving pole control simultaneously is to gate pole unit transmitting control commands.
Transmission command adopts the serial code transmission between CCP and the VBE.And the VBE data processing channel adopts two Redundancy Design.Two data treatment channel of VBE to self carry out in real time, comprehensively monitoring, comprise the state of the communicating by letter of the communicating by letter of VBE and control protection system (CCP), VBE and gate leve unit, interior each electronic component of this passage etc.If certain bar passage is found this channel failure, then the output of the switch unit in CCP switching value signal " passage handoff request " switches to another passage.When if another passage also breaks down, then send " tripping operation request " signal.Fig. 1 has illustrated that the passage between VBE and the CCP switches and tripping operation request interface relation.
Summary of the invention
The objective of the invention is to propose a kind of stable, reliability and safe, be used for realizing that the converter valve valve base electronic device is lost pulse implements 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 the burst process flow process, has solved because of losing pulse and has caused potential safety hazards such as HVDC converter valve overvoltage, overcurrent.
A kind of converter valve valve base electronic equipment of the present invention is lost pulse protection and control method, may further comprise the steps:
(1) valve base electronic device VBE sense channel failure cause, two data treatment channel are carried out real time monitoring to self when VBE moves, comprise VBE and 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 then valve base electronic device VBE is to control protection system CCP transmitting system switching request signal Fail; If, then continue to receive the trigger impulse that sends by control protection system CCP, transmitting system switching request signal Fail not, valve base electronic device VBE continues the control converter valve and carries out work;
(2) if when valve base electronic device VBE loses the trigger impulse that 4 cycles send by control protection system CCP continuously, then valve base electronic device VBE is to control protection system CCP transmitting system switching request signal Fail.
The invention allows for a kind of converter valve valve base electronic equipment of above-mentioned control method that uses and lose pulse protection and control system, valve base electronic device VBE comprises with outside interface: with the interface of control protection system CCP, with the interface of gate leve unit GU, with the interface of cooling system leakage monitoring device and with the interface of power supply; Adopt optical cable to be connected between valve base electronic device VBE and the control protection system, and light signal and cable signal all adopt the photoelectricity quarantine measures to isolate with optical fiber; Wherein valve base electronic device VBE comprises with the interface of control protection system CCP: channel selecting, and CCP exports to valve base electronic device VBE by the control protection system, in order to the main channel of selection VBE with from passage; Valve base electronic device VBE locking, CCP exports to valve base electronic device VBE by the control protection system, in order to release or locking valve base electronic device VBE; Channel monitoring is exported to control protection system CCP, repayment channel selection information by valve base electronic device VBE; Valve base electronic device VBE handoff request is exported to control protection system CCP by valve base electronic device VBE, and when master-slave system need be switched, valve base electronic device VBE exported this signal; Tripping operation request, valve base electronic device VBE exports to control protection system CCP, when valve base electronic device VBE detects when unusual, exports to control protection system CCP; Valve base electronic device VBE has comprised also that with control protection system CCP interface control 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, has saved cost.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 shows according to the VBE of method and system of the present invention and the interface relationship between the CCP.
Fig. 2 shows method and system VBE of the present invention at the flow chart of losing the pulse post-processing approach.
Embodiment
When control protection system (CCP) was lost the trigger impulse of some or a plurality of valves, the pulse that the interface arrangement of VBE and CCP sends to VBE had only 3 or trigger impulse serial trigger word still less.Here it is loses pulse phenomenon.
VBE is original to be quick switched system to the processing policy of losing pulse phenomenon, promptly detects when losing trigger impulse, and VBE is promptly to CCP transmitting system switching request signal.In a cycle (20ms), the conducting angle of each thyristor level of 12 brachium pontis is 30 degree, and ON time is about 1.67ms.VBE receives that can to detect trigger word immediately after the serial trigger word of having only three trigger impulses incorrect, and to CCP sendaisle handoff request (VBE Fail) signal, passage switches and will finish in 6-7ms, if system is normal, handover success then, the VBE main channel switches to from passage.Cause when also unavailable if continue pulse-losing or other faults from system, then VBE sends tripping operation request (VBE Trip) signal to CCP.The 6-7ms that switches at passage is in the time, ought to four valve of conducting, and other valves then do not receive trigger impulse in correct conducting angle.
Under the triggered as normal situation, ± 660kV direct-current transmission converter valve direct voltage peak value is ± 660kV, direct current is about 1.67kA, and the direct current peak forward voltage is about 998kV after losing pulse under the improper situation, negative peak voltage is-700kV, and peak current is about 6.5kA.
Solve this phenomenon and then can use the processing mode of Fig. 2.Will be if detect when losing trigger impulse by the trigger word control converter valve that receives at VBE, and transmitting system switching request signal is not done any processing.Fig. 2 shows VBE at the flow chart of losing the pulse post-processing approach.When occurring losing the trigger impulse of single valve continuously in the trigger word that the DC control protection system is sent, if this phenomenon duration is less than 80ms (4 cycles), then VBE receives the trigger word of losing single valve trigger impulse, continues the control converter valve; If the duration reaches 80ms, then VBE sends switched system request (Fail) signal.After this mode was handled and lost pulse, then direct current crest voltage, electric current all met the requirements, and method is simple, only needed to change the internal control method of VBE, saved cost.
Invention has been described according to specific exemplary embodiment herein.It will be conspicuous carrying out suitable replacement to one skilled in the art or revise under not departing from the scope of the present invention.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (2)
1. a converter valve valve base electronic equipment is lost pulse protection and control method, it is characterized in that may further comprise the steps:
(1) valve base electronic device VBE sense channel failure cause, two data treatment channel are carried out real time monitoring to self when VBE moves, comprise VBE and 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 then valve base electronic device VBE is to control protection system CCP transmitting system switching request signal Fail; If, then continue to receive the trigger impulse that sends by control protection system CCP, transmitting system switching request signal Fail not, valve base electronic device VBE continues the control converter valve and carries out work;
(2) if when valve base electronic device VBE loses the trigger impulse that 4 cycles send by control protection system CCP continuously, then valve base electronic device VBE is to control protection system CCP transmitting system switching request signal Fail.
2. one kind is used the converter valve valve base electronic equipment of the described control method of claim 1 to lose pulse protection and control system, it is characterized in that:
Valve base electronic device VBE comprises with outside interface: with the interface of control protection system CCP, with the interface of gate leve unit GU, with the interface of cooling system leakage monitoring device and with the interface of power supply; Adopt optical cable to be connected between valve base electronic device VBE and the control protection system, and light signal and cable signal all adopt the photoelectricity quarantine measures to isolate with optical fiber; Wherein valve base electronic device VBE comprises with the interface of control protection system CCP: channel selecting, and CCP exports to valve base electronic device VBE by the control protection system, in order to the main channel of selection VBE with from passage; Valve base electronic device VBE locking, CCP exports to valve base electronic device VBE by the control protection system, in order to release or locking valve base electronic device VBE; Channel monitoring is exported to control protection system CCP, repayment channel selection information by valve base electronic device VBE; Valve base electronic device VBE handoff request is exported to control protection system CCP by valve base electronic device VBE, and when master-slave system need be switched, valve base electronic device VBE exported this signal; Tripping operation request, valve base electronic device VBE exports to control protection system CCP, when valve base electronic device VBE detects when unusual, exports to control protection system CCP; Valve base electronic device VBE has comprised also that with control protection system CCP interface control protection system CCP sends the interface relationship of hot word and trigger word to valve base electronic device VBE simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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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 true CN102013677A (en) | 2011-04-13 |
| CN102013677B CN102013677B (en) | 2014-03-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103219798A (en) * | 2013-03-25 | 2013-07-24 | 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 |
| CN105548726A (en) * | 2015-12-09 | 2016-05-04 | 许继电气股份有限公司 | Method for diagnosing trigger pulses of converter valve in high-voltage direct-current transmission system |
| CN106814665A (en) * | 2017-01-19 | 2017-06-09 | 许继电气股份有限公司 | DC transmission system control mode switch method and system |
| WO2022052830A1 (en) * | 2020-09-10 | 2022-03-17 | 国家电网有限公司 | Valve based control and protection method, and device and storage medium |
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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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219798A (en) * | 2013-03-25 | 2013-07-24 | 国网智能电网研究院 | Direct-current transmission converter valve control protection system and control protection method thereof |
| 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 |
| CN105548726A (en) * | 2015-12-09 | 2016-05-04 | 许继电气股份有限公司 | Method for diagnosing trigger pulses of converter valve in high-voltage direct-current transmission system |
| CN106814665A (en) * | 2017-01-19 | 2017-06-09 | 许继电气股份有限公司 | DC transmission system control mode switch method and 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 |
| WO2022052830A1 (en) * | 2020-09-10 | 2022-03-17 | 国家电网有限公司 | Valve based control and protection method, and device and storage medium |
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| CN102013677B (en) | 2014-03-12 |
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