CN103683493A - Power electronic equipment failure self-healing device - Google Patents
Power electronic equipment failure self-healing device Download PDFInfo
- Publication number
- CN103683493A CN103683493A CN201310566771.2A CN201310566771A CN103683493A CN 103683493 A CN103683493 A CN 103683493A CN 201310566771 A CN201310566771 A CN 201310566771A CN 103683493 A CN103683493 A CN 103683493A
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- China
- Prior art keywords
- series circuit
- comparator
- parallel
- electronic equipment
- fault self
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Protection Of Static Devices (AREA)
- Power Conversion In General (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a power electronic equipment failure self-healing device which comprises a series circuit failure self-healing unit and a parallel circuit failure self-healing unit. The series circuit failure self-healing unit comprises a bypass switch and a series circuit monitoring and controlling mechanism. The bypass switch is connected in parallel to a functional device in a series circuit. The series circuit monitoring and controlling mechanism is connected with the bypass switch. The parallel circuit failure self-healing unit contains multiple circuit breakers and a parallel circuit monitoring and controlling mechanism. The circuit breakers are connected in series to a parallel circuit. The parallel circuit monitoring and controlling mechanism is connected with the circuit breakers. By the adoption of the device, a self-healing mechanism can be started when a power device breaks down. Thus, chain reaction of secondary failure is avoided, safe operation of the power electronic equipment is guaranteed, and an unpredictable sudden accident can be converted to a foreseeable planned maintenance work.
Description
Technical field
The invention belongs to power equipment safety resist technology field, relate to a kind ofly for preventing the secondary fault of power electronic equipment, guarantee the power electronic equipment fault self-recovery device of its reliability service.
Background technology
Power electronic equipment is to take the equipment of power electronic device as major function element, comprise converter valve, electronic switch and electronic AC power controller, it is the indispensable visual plant of operation of power networks, and each equipment is all a huge system, in power electronic equipment, power device quantity is extremely huge.Converter valve for example, it is the nucleus equipment of DC transmission engineering, and it obtains the direct voltage of expectation and realizes the control to power by successively three-phase alternating voltage being connected to DC terminal, and it is worth and often accounts for 22～25% of current conversion station complete set of equipments total price.Converter valve is by the power device employing plural serial stage of enormous amount and composes in parallel, in running, powerful voltage will lean on numerous power device shareds, can guarantee the normal operation of system, once there is the non-situation of all pressing, probably lead to the paralysis of whole circulation system.At present, although electric power system has adopted Redundancy Design in the process of building a station, and carried out all pressing and processing, but, a power device series is conventionally mutually in series by dozens of power device, a power device in service breaks down, will make whole power device series quit work, system voltage is born by other power device, and design amount of redundancy often only has 2-3%, in this case, the large area overload that must cause power device, so will cause complete equipment after single component wear can not work, even cause a plurality of devices to damage simultaneously, not only bring great maintenance load and have a power failure for a long time, the economic loss of electric power enterprise is also difficult to estimate.Up to now, this problem is solved not yet preferably.
Summary of the invention
For overcoming the deficiency of prior art, the object of the present invention is to provide a kind of power electronic equipment fault self-recovery device, the method can start self-healing mechanism under power device malfunction, guarantee the safe operation of power electronic equipment, prevent the generation of secondary accident, unpredictable unexpected accident can be converted into the scheduled overhaul work that can predict simultaneously.
For achieving the above object, the technical scheme that the present invention takes is: a kind of power electronic equipment fault self-recovery device, comprise series circuit and parallel circuits that a plurality of power devices form respectively, described series circuit and parallel circuits arrange respectively series circuit fault self-recovery unit and parallel circuits fault self-recovery unit, described series circuit fault self-recovery unit comprises by-pass switch and series circuit Monitoring and Controlling mechanism, described by-pass switch is in parallel with the function element on described series circuit, and described series circuit Monitoring and Controlling mechanism is connected with described by-pass switch; Described parallel circuits fault self-recovery unit comprises many group disconnects and parallel circuits Monitoring and Controlling mechanisms, and described disconnect is connected with described parallel circuits, and described parallel circuits Monitoring and Controlling mechanism is connected with described disconnect.
Described series circuit Monitoring and Controlling mechanism comprises the comparator I that photoelectric switch is attached thereto, and described comparator I is connected with synchronous trigger impulse device, and described by-pass switch is connected with described comparator I by holding wire.
Described parallel circuits Monitoring and Controlling mechanism comprises the comparator II that many group photoelectric switch are attached thereto, and described comparator I is connected with synchronous trigger impulse device, and described many group disconnects and comparator II are parallel with one another.
Described comparator I, II are connected with display controller by data/address bus respectively.
Power electronic equipment fault self-recovery device of the present invention, can start down self-healing mechanism, avoid the chain generation of secondary fault, and guarantee the safe operation of power electronic equipment, unpredictable unexpected accident can be converted into the scheduled overhaul work that can predict simultaneously.
Embodiment
According to inventor, study, converter valve, the power electronic equipment such as electronic switch and electronic AC power controller, its major part is that the power device by enormous amount first forms power device series by parallel connection respectively, and then by a plurality of power device series, by parallel with one another, forms three-phase current switching control system respectively.In these equipment running process, its electric current by each phase current TCU transfer control unit is by each power device equalization of incidence, once there is the comparatively serious non-situation of all pressing, can cause the overload of large area power device, cause a large amount of damages of power device and the paralysis of whole equipment, not only maintenance load is huge, causes the power failure of large area long period, also to electric power enterprise, brings serious economic loss.Therefore, when carrying out power electronic equipment design, generally all want many-side to take all to press measure, carry out Redundancy Design.But, in economy, consider, its amount of redundancy is conventionally at 2%-3%, and in actual motion, the damage of a power device, tends to cause the paralysis of one or more power device series, and above-mentioned amount of redundancy is noncompensable far away, powerful electric current is born by remaining power device, and these power devices will seriously overload and occur the damage of linksystem.The present invention is the linksystem occurring according to this class fault, by this power electronic equipment fault self-recovery device, fault power device is implemented to single isolation or single-phase isolation, avoid thus the chain generation of secondary fault, utilize the redundancy of equipment design, the reliability service of assurance equipment is converted into by unpredictable unexpected accident the scheduled overhaul work that can predict simultaneously.
Power electronic equipment fault self-recovery device of the present invention, comprise the series circuit and the parallel circuits that by a plurality of power devices, are formed respectively, described series circuit and parallel circuits arrange respectively series circuit fault self-recovery unit and parallel circuits fault self-recovery unit, described series circuit fault self-recovery unit comprises by-pass switch and series circuit Monitoring and Controlling mechanism, described by-pass switch is corresponding in parallel with each function element on described series circuit respectively, and described series circuit Monitoring and Controlling mechanism is connected with described by-pass switch; Described series circuit Monitoring and Controlling mechanism comprises the comparator I that photoelectric switch is attached thereto, and described comparator I is connected with synchronous trigger impulse device, and described by-pass switch is connected with described comparator I by holding wire.Described parallel circuits fault self-recovery unit comprises many group disconnects and parallel circuits Monitoring and Controlling mechanisms, and described disconnect is connected with described parallel circuits, and described parallel circuits Monitoring and Controlling mechanism is connected with described disconnect.Described parallel circuits Monitoring and Controlling mechanism comprises the comparator II that many group photoelectric switch are attached thereto, described comparator II with synchronize trigger impulse device and connect, described organize disconnects more and comparator II parallel with one another.Described comparator I, II are connected with display controller by data/address bus.Below in conjunction with embodiment, the present invention will be further described.
Take converter valve as example, and it comprises that the thyristor by enormous amount consists of respectively the series circuit of thyristor string parallel connection, and then by a plurality of thyristors, is ganged up and parallel with one anotherly formed respectively parallel circuits and form respectively three-phase current switching control system respectively.Power electronic equipment fault self-recovery device of the present invention is, at described series circuit and parallel circuits, series circuit fault self-recovery unit and parallel circuits fault self-recovery unit are set respectively.Described series circuit fault self-recovery unit is at each thyristor two ends of series connection mutually by-pass switch in parallel and a photoelectric switch, described photoelectric switch is connected with comparator I, a plurality of comparator I with synchronize trigger impulse device and connect, by described photoelectric switch, comparator I and synchronous trigger impulse device, connect and compose series circuit Monitoring and Controlling mechanism.
For many shish-kebabs brake tube part parallel with one another, adopt described parallel circuits fault self-recovery unit to protect; described parallel circuits fault self-recovery unit is in each Thyristors in series circuit parallel with one another, connect a disconnect and a photoelectric switch; each photoelectric switch is connected with a comparator II, organizes disconnect and comparator II is parallel with one another more.Comparator II is connected with synchronous trigger impulse device, certainly also can synchronize with one of series circuit fault self-recovery units shared trigger impulse device.Described comparator I, II are connected with display controller by data/address bus, for the alarm indication of fault-signal.
This device in use, the signal that is parallel to the photoelectric switch output of thyristor is synchronized with the operating state of cut-offfing of thyristor, this signal with synchronize the output signal comparison of trigger impulse device device, if these two signals synchronously, comparator is not exported, as asynchronous, export control command, the by-pass switch that order is parallel to this thyristor is closed, and the thyristor of fault is fallen in automatic short-circuit, sends the indication information that shows this demonstration control fault by bus to display controller simultaneously.The output signal that is parallel to the photoelectric switch at thyristor uniform flow resistance two ends is synchronized with the operating state of cut-offfing of thyristor, this signal with synchronize the output signal comparison of trigger impulse device, these two signals as synchronously comparator do not export, as asynchronous, export control command, the disconnect that order is series at this thyristor disconnects, automatically the thyristor string of open failure sends the indication information that shows this power device fault simultaneously to display controller by bus.
Claims (4)
1. a power electronic equipment fault self-recovery device, it comprises series circuit and the parallel circuits that a plurality of power devices form respectively, it is characterized in that: described series circuit and parallel circuits arrange respectively series circuit fault self-recovery unit and parallel circuits fault self-recovery unit, described series circuit fault self-recovery unit comprises by-pass switch and series circuit Monitoring and Controlling mechanism, described by-pass switch is in parallel with the function element on described series circuit, and described series circuit Monitoring and Controlling mechanism is connected with described by-pass switch; Described parallel circuits fault self-recovery unit comprises many group disconnects and parallel circuits Monitoring and Controlling mechanisms, and described disconnect is connected with described parallel circuits, and described parallel circuits Monitoring and Controlling mechanism is connected with described disconnect.
2. power electronic equipment fault self-recovery device as claimed in claim 1, it is characterized in that: described series circuit Monitoring and Controlling mechanism comprises the comparator I that photoelectric switch is attached thereto, described comparator I is connected with synchronous trigger impulse device, and described by-pass switch is connected with described comparator I by holding wire.
3. power electronic equipment fault self-recovery device as claimed in claim 1, it is characterized in that: described parallel circuits Monitoring and Controlling mechanism comprises the comparator II that many group photoelectric switch are attached thereto, described comparator I is connected with synchronous trigger impulse device, and described many group disconnects and comparator II are parallel with one another.
4. power electronic equipment fault self-recovery device as claimed in claim 2 or claim 3, is characterized in that: described comparator I, II are connected with display controller by data/address bus respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566771.2A CN103683493A (en) | 2013-11-13 | 2013-11-13 | Power electronic equipment failure self-healing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566771.2A CN103683493A (en) | 2013-11-13 | 2013-11-13 | Power electronic equipment failure self-healing device |
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| Publication Number | Publication Date |
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| CN103683493A true CN103683493A (en) | 2014-03-26 |
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| CN201310566771.2A Pending CN103683493A (en) | 2013-11-13 | 2013-11-13 | Power electronic equipment failure self-healing device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699732A (en) * | 2009-10-30 | 2010-04-28 | 艾默生网络能源有限公司 | Fault control method of converter |
| WO2011012171A1 (en) * | 2009-07-31 | 2011-02-03 | Areva T&D Uk Limited | Configurable hybrid converter circuit |
| CN201946965U (en) * | 2011-03-15 | 2011-08-24 | 大连东方电力设备有限公司 | Loop system for clearing overloading fault or short circuiting fault |
| CN103245868A (en) * | 2012-02-10 | 2013-08-14 | 武汉洪山电工科技有限公司 | Large-scale power rectifier cabinet silicon controlled rectifier continuity detection device |
| CN203617789U (en) * | 2013-11-13 | 2014-05-28 | 国家电网公司 | Power electronic equipment fault self-healing device |
-
2013
- 2013-11-13 CN CN201310566771.2A patent/CN103683493A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011012171A1 (en) * | 2009-07-31 | 2011-02-03 | Areva T&D Uk Limited | Configurable hybrid converter circuit |
| CN101699732A (en) * | 2009-10-30 | 2010-04-28 | 艾默生网络能源有限公司 | Fault control method of converter |
| CN201946965U (en) * | 2011-03-15 | 2011-08-24 | 大连东方电力设备有限公司 | Loop system for clearing overloading fault or short circuiting fault |
| CN103245868A (en) * | 2012-02-10 | 2013-08-14 | 武汉洪山电工科技有限公司 | Large-scale power rectifier cabinet silicon controlled rectifier continuity detection device |
| CN203617789U (en) * | 2013-11-13 | 2014-05-28 | 国家电网公司 | Power electronic equipment fault self-healing device |
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Application publication date: 20140326 |