CN103514969B - Power supply system failure and consequence analyzing method - Google Patents
Power supply system failure and consequence analyzing method Download PDFInfo
- Publication number
- CN103514969B CN103514969B CN201210219027.0A CN201210219027A CN103514969B CN 103514969 B CN103514969 B CN 103514969B CN 201210219027 A CN201210219027 A CN 201210219027A CN 103514969 B CN103514969 B CN 103514969B
- Authority
- CN
- China
- Prior art keywords
- power
- supply system
- design
- power supply
- consequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02E30/00—Energy generation of nuclear origin
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the technology of design of nuclear power plants, and particularly relates to a power supply system failure and consequence analyzing method. The method comprises the steps that firstly, a structure of a power supply system and failures which can occur are analyzed, all the users of the power supply system are listed, power supply conditions of user equipment are obtained based on the design of the varieties of power supply switches, the running conditions of the user equipment are obtained through the power supply conditions, response and influences on functions of systems or subsystems where the user equipment is located due to the changes of the running conditions of the user equipment are analyzed, response and influences on the functions of related systems or related subsystems are comprehensively analyzed and evaluated to obtain the key consequences caused by the failure of the power supply system, and a design scheme is perfected. The power supply system failure and consequence analyzing method can effectively avoid the situation of thoughtless design caused by the relative independence of system design and electrical design among all specialized lines, and can be taken as a complementary design mode of power supply design. Further, the method can be applied to the field of making of abnormal processing methods for nuclear power plants and solve the problem of the basis for writing operating standards.
Description
Technical field
The invention belongs to nuclear power plant design technology, and in particular to the analysis side of a kind of nuclear power plant's power-supply system forfeiture and consequence
Method.
Background technology
Nuclear power plant is generally basede on mature technology and security consideration, or batch is built, or sets with reference to little reconstruction.For presurized water reactor
Serial nuclear power plant, the system of power plant and installations and facilities design, the design including power-supply system are roughly the same.Meanwhile, nuclear power plant
Operating standard, including the formulation of the related operating standard of power-supply system is also to change with reference to little, is not supported the demand of analysis.
With the development of nuclear power technology, the system equipment design of nuclear power plant is not unalterable.But as nuclear power plant is pacified
Full importance, people are often improved to design and hold very careful attitude.There is a kind of concept of nuclear Safety Culture among these, i.e.,
It is safest using the technology through practice test.In addition, how to prove the safety and reliability of new technique, how to evaluate
The risk that new technique is present, this is also the certain challenge of the comparison proposed to design.For power system design is improved or which
The change of related abnormality eliminating method, there is also such design challenges.
Power-supply system is the important component part of nuclear power station, including mesolow AC power supply system and DC power system,
Its function is powered to all power loads of nuclear power station.The power load that is related to extensively, includes safe level and non-security level
Electricapparatus equipment and control rack.Power-supply system lose have influence on reactor coolant loop, reactor protection system response,
Safety in nuclear safety and aid system, secondary coolant circuit system, power generation-transmission system and factory in terms of electrical system Deng Quan factory scope and
Operation.It can be seen that, the design of power-supply system and reliability directly affect safety and the operation of nuclear power station, need to formulate complete
The abnormality eliminating method that power-supply system is lost is tackled risk.
For the reasons such as technological progress are using the design of different electrical power supply system, then asking for design rationality is brought
Topic, and in terms of the depth defense for, bringing newly-designed affects particularly to lose asking for consequence change and processing method
Topic.The power-supply system composition of nuclear power station is complicated, and its supply load is varied, including the reaction with nuclear power station safety total correlation
Heap trip protection system, engineered safeguards features, and system and the equipment operation of control accident development.As can be seen here, nuclear power station
The reliability effect of power-supply system the safety of nuclear power station, especially for the impact that power-supply system is lost, should be divided comprehensively
Analysis, combing key consequence, evaluate to power-supply system and its power-supply service, while counte-rplan are proposed, for targeted
Formulate operating standard in ground.
The content of the invention
Present invention aims to the needs of nuclear power plant's power system design, there is provided a kind of power-supply system lose and after
The analysis method of fruit, changes the uncertain impact for bringing so as to solve power system design.The method can be prevented effectively from respectively
System design and electrical design is relatively independent and the inconsiderate situation of design that produces between specialty, can be used as power-supply service
A kind of complementary design mode.
Technical scheme is as follows：A kind of power-supply system forfeiture and the analysis method of consequence, comprise the steps：
（1）Analysis power system structure and the failure that may occur；
（2）All users of power-supply system are listed in analysis；
（3）Designed based on power switch species, obtain the power supply situation of each user equipment；
（4）From power supply situation, with reference to user's in-house facility species, user equipment operation conditions is obtained；
（5）Response and shadow that analysis user equipment place system or subsystem function are changed due to user equipment operation conditions
Ring；
（6）The numerous systems or subsystem function that are associated with power-supply system are responded and impact carries out comprehensive analysis and comments
Valency, obtains the crucial consequence that the power-supply system is lost；
（7）If it find that power-supply system loses the crucial consequence for causing beyond the design requirement and index of nuclear power plant, then enter
The probability of one step research design modification and perfection, proposes design perfect scheme；
（8）Report is researched and analysed in formation, processes procedure making for misoperation.
Further, the analysis method of power-supply system forfeiture as above and consequence, wherein, step（1）Described in can
The failure that can occur includes losing alternating current power supply, AC and DC busbar short-circuit, battery charger failure, busbar voltage low.
Further, the analysis method of power-supply system forfeiture as above and consequence, wherein, step（3）Described in confession
Electric situation is included by electricity or dead electricity.
Further, the analysis method of power-supply system forfeiture as above and consequence, wherein, step（4）Described in use
Whether family equipment operation condition includes keeping current operating conditions or out of service, and can monitor.
Beneficial effects of the present invention are as follows：
1st, can be used for studying and evaluating the reliability and risk of design variation, new technique is verified in the way of results-driven
Or the suitability of technological improvement, so as to ensure the safety of nuclear power plant.
2nd, analysis comprehensive to power-supply system and coherent and research, power-supply system can improve, decomposability
Omnibearing elaboration data, formulates misoperation code for which and provides preferable input, it is ensured that operating standard is just formulated
True property.
3rd, comprehensive analysis and evaluation, can play a part of reverse design, be conducive to being further ensured that power system design
Reasonability, or even play promotion using newly-designed effect.
4th, the material obtained using the analysis method of power-supply system forfeiture and consequence, can be used for Training and Learning purpose,
Improve the understanding to contacting between power-supply system and nuclear power plant's other systems, design and operation field.
Description of the drawings
Fig. 1 is method of the present invention flow chart.
Specific embodiment
As shown in figure 1, the analysis method of power-supply system forfeiture provided by the present invention and consequence, comprises the steps：
（1）Analysis power system structure and the failure that may occur；
（2）All users of power-supply system are listed in analysis；
（3）Designed based on power switch species, obtain the power supply situation of each user equipment, including by electricity or dead electricity；
（4）From power supply situation, with reference to user's in-house facility species, user equipment operation conditions is obtained, including keeps current
Whether operation conditions is out of service, and can monitor；
（5）Response and shadow that analysis user equipment place system or subsystem function are changed due to user equipment operation conditions
Ring；
（6）The numerous systems or subsystem function that are associated with power-supply system are responded and impact carries out comprehensive analysis and comments
Valency, obtains the crucial consequence that the power-supply system is lost；
Crucial consequence refers to that the production run to nuclear power plant impacts the higher consequence of degree, or even affects safety.For example
Power plant can be caused to be in larger transient state（Such as emergency shut-down）, this is unfavorable to equipment, despite cannot avoid, but should
More than design original intention；The nuclear power plant method of operation is caused again for example than larger change, such as main pump is stopped transport, major loop is from forcing
Circular flow becomes for Natural Circulation, and the mode of decrease temperature and pressure will change.
（7）If it find that power-supply system loses the crucial consequence for causing beyond the design requirement and index of nuclear power plant, then enter
The probability of one step research design modification and perfection, proposes design perfect scheme；
（8）Report is researched and analysed in formation, processes procedure making for misoperation.
Using this power-supply system forfeiture and the analysis method of consequence, can solve to design and change the uncertain shadow for bringing
Ring.This analysis method establishes systematic evaluation method, design is considered from more global angle, effectively can be kept away
Exempt from that system design and electrical design between each specialty be relatively independent and the inconsiderate situation of design that produces, can be used as power supply
A kind of complementary design mode of design.Meanwhile, technique can be used for the field of nuclear power station abnormality eliminating method formulation, including
Nuclear power station abnormality eliminating method change, for study power-supply system forfeiture impact and failure operation it is whether acceptable, controllable,
Can process, solve the problems, such as that operating standard writes foundation.As technique provides a kind of strong analysis and evaluation, it
Whether the effect of the misgivings of new power system design and structure is adopted in may also operate as eliminating nuclear power station design.
This method can be used for the research and evaluation of all power-supply systems of nuclear power plant, including：6.6kV electrical source of power, 220V
Ups power, 125V (or 110V) DC source, 48V DC sources.Below by taking the forfeiture of 125V DC power systems as an example, to this
Invention is described in detail.
The design composition and function of 125V DC power systems are studied first.125V straight-flow systems, are divided into A row and B is arranged.Often
Row power supply is made up of two chargers and an accumulator battery.Two charger parallel runnings, one of charger is by 380V
Emergent alternating current power supply is powered, and when a charger breaks down, automatically switches to another.Accumulator battery terminal voltage is maintained not
Become, or be in floating charge state.During normal operation, battery only needs to provide instantaneous peak demand.It is main to provide to following user
125V unidirectional currents：The energy storage motor and control coil of 6.6kV choppers, the control coil of 6.6kV and 380V A.C. contactors,
The control power supply of 6.6kV and 380V alternating-current distribution panel instrument, control rod power-supply system and reactor protection system, 220V UPS are inverse
Become device.
Research 125V DC power system failures, it is former including alternating current power supply, AC and DC busbar short-circuit, charger is lost
Barrier, busbar voltage are low.Wherein, dc bus short circuit is low with busbar voltage will cause 125V DC power systems to be lost.Lose event
Barrier by the low fault alarm diagnosis of voltage, and can be confirmed by signals such as shutdown circuit breaker failures.
Research user equipment running status.According to 125V direct current panel outlet tables, customer charge is listed in analysis and which supplies
Electric switch type.Wherein user is distribution board, and further therefrom pressure or low-tension distribution board outlet table find out particular user equipment.
Power switch type has chopper, catalyst, locking type catalyst, and its action when losing 125V control power supplys is respectively：Keep
In situ, disconnection, holding are in situ.In terms of plant equipment, rotating machinery when losing 125V（Such as pump, blower fan）Motor trips, electrodynamic valve
Door keeps in situ.
The operation consequence of research power plant system and response.The running status of user equipment affects the function of place system, bag
Include main electrical system and equipment：Main transformer, Turbo-generator Set, middle piezoelectricity origin system auto-action, control rod power supply
System；Mechanical system and equipment have：Three main pumps of reactor coolant loop, fill pump on cvcs A row, pacify
Full station-service water and component cooling water system, auxiliary feedwater system, steam-dump system, reactor boron and water make-up system etc..
The consequence lost according to above-mentioned 125V power supplys and response, mainly from outside factory, main power source forfeiture and voltage source in part are cut
Change to powered by accessory power supply, Turbo-generator Set tripping operation, control rod power-supply system and reactor protection system, main pump are stopped transport, A
The aspects such as row station-service equipment stoppage in transit carry out comprehensive analysis, and these consequences are related to steam turbine tripping operation, control rod and fall and promptly stop
The crucial consequences such as heap, Natural Circulation, the switching of A/B row equipment.
For 125V DC power systems, 125V A row are lost, Turbo-generator Set tripping operation, power network line open circuit can be caused
Pump shutdown, A row component cooling water pump shutdowns, master control chamber ventilated A row blower fans are filled in device tripping operation, control rod power-supply system dead electricity, A row
Stop transport etc..
Steam turbine tripping operation is crucial consequence for secondary circuit operation, it is meant that secondary circuit operation changes, including condensation
Device operation, feedsupply, discharge of steam.
Power network line circuit breaker trip, causes main power source outside factory of power plant to be lost, and 6.6kV medium voltage panels automatically switch to auxiliary
Power supply is helped, this is the crucial consequence to electrical system operation.
Control rod power-supply system dead electricity can cause control rod to fall, i.e. emergency shut-down, and crucial consequence.
And the impact that pump shutdown is filled on A row compare be confined to it is system-level, can by switch to put into operation B row on fill at pump
Reason.A row component cooling water pump shutdowns, it is meant that the operation of A row station-service equipment is impacted, this is related to numerous equipment and will be switched to B row,
Affect also larger.
For power supply forfeiture is processed, total counte-rplan are accomplished by considering above-mentioned Turbo-generator Set tripping operation, electrical network
Line-breaker tripping operation, control rod power-supply system dead electricity, A row component cooling waters pump shutdown these crucial consequences are proposed.
Further, it is comprehensive to carry out consequence in terms of mainly operation possibility and complexity etc. being run after transient affair classification and accident
Close and evaluate.In terms of transient affair classification, power-supply system is lost event and typically belongs to two class operating modes, and Calculation results should meet two
Class operating mode criterion, should not result in higher level accident and occurs.In terms of operation possibility is run after accident, reactor is carried out first
The performability of the system and equipment of security function and substitute means, next to that ensure that these systems and equipment operation operate is
The performability of system and equipment, and the recovery about system and equipment and maintenance requirement.If comprehensive analysis and evaluation are thought
Power-supply system is lost to result in run and operates excessively loaded down with trivial details or complicated or safety to move back anti-state labile, then should be from power-supply service
With the feasibility that improvement is studied in custom system design.It is probably system-level or device level that this design improves.
Through comprehensively researching and analysing, require with reference to misoperation processing method, compile assay report, can conduct
According to for working out abnormality eliminating method, response policy and processing method are determined whereby.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications and modification to the present invention belong to the model of the claims in the present invention and its equivalent technology
Within enclosing, then the present invention is also intended to comprising these changes and modification.
Claims (4)
1. the analysis method of a kind of power-supply system forfeiture and consequence, comprises the steps：
(1) power system structure and the failure that may occur are analyzed；
(2) all users of power-supply system are listed in analysis；
(3) based on power switch species, obtain the power supply situation of each user equipment；
(4) from power supply situation, with reference to user equipment class, obtain user equipment operation conditions；
(5) response and impact that user equipment place system or subsystem function change with user equipment operation conditions are analyzed；
(6) the numerous systems or subsystem function that are associated with power-supply system are responded and impact carry out comprehensive analysis and evaluation,
Obtain the crucial consequence that the power-supply system is lost；
(7) if it find that power-supply system loses the design requirement and index that the crucial consequence for causing exceeds nuclear power plant, then further
The probability of research design modification and perfection, proposes design perfect scheme；
(8) formed and research and analyse report, procedure making is processed for misoperation.
2. power-supply system as claimed in claim 1 lose and consequence analysis method, it is characterised in that：Described in step (1)
The failure that occurs of possibility include losing alternating current power supply, AC and DC busbar short-circuit, battery charger failure, busbar voltage low.
3. power-supply system as claimed in claim 1 lose and consequence analysis method, it is characterised in that：Described in step (3)
Power supply situation include by electricity or dead electricity.
4. power-supply system as claimed in claim 1 lose and consequence analysis method, it is characterised in that：Described in step (4)
User equipment operation conditions include keeping current operating conditions or out of service, and whether can monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219027.0A CN103514969B (en) | 2012-06-28 | 2012-06-28 | Power supply system failure and consequence analyzing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219027.0A CN103514969B (en) | 2012-06-28 | 2012-06-28 | Power supply system failure and consequence analyzing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103514969A CN103514969A (en) | 2014-01-15 |
| CN103514969B true CN103514969B (en) | 2017-04-12 |
Family
ID=49897546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210219027.0A Active CN103514969B (en) | 2012-06-28 | 2012-06-28 | Power supply system failure and consequence analyzing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103514969B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908675B (en) * | 2017-02-23 | 2020-01-21 | 中广核工程有限公司 | System and method for detecting influence of power supply interruption on operation of nuclear power plant |
| CN107845436B (en) * | 2017-09-27 | 2023-11-14 | 中国核电工程有限公司 | Remote shutdown station control method for main control room of pressurized water reactor nuclear power plant when not being resident |
| CN108172314B (en) * | 2017-11-23 | 2021-07-16 | 中国核电工程有限公司 | Digital analysis method for unavailable fault handling strategy of master control room of pressurized water reactor nuclear power plant |
| CN108665990A (en) * | 2018-04-26 | 2018-10-16 | 中国核动力研究设计院 | A kind of device and method of reliable stoppage in transit reactor coolant pump |
| CN114121317A (en) * | 2021-10-18 | 2022-03-01 | 中广核工程有限公司 | Nuclear power plant station power supply switching test method, device and equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437573A (en) * | 2011-12-29 | 2012-05-02 | 广东电网公司深圳供电局 | Evaluation and control method and system for reliability of electric distribution network based on fuzzy modeling |
| CN102521667A (en) * | 2011-12-26 | 2012-06-27 | 华北电力大学（保定） | Probability assessing method for stage type protection operational risk of electric power system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6978398B2 (en) * | 2001-08-15 | 2005-12-20 | International Business Machines Corporation | Method and system for proactively reducing the outage time of a computer system |
-
2012
- 2012-06-28 CN CN201210219027.0A patent/CN103514969B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521667A (en) * | 2011-12-26 | 2012-06-27 | 华北电力大学（保定） | Probability assessing method for stage type protection operational risk of electric power system |
| CN102437573A (en) * | 2011-12-29 | 2012-05-02 | 广东电网公司深圳供电局 | Evaluation and control method and system for reliability of electric distribution network based on fuzzy modeling |
Non-Patent Citations (2)
| Title |
|---|
| 大亚湾核电站外电源***可靠性分析中 GO 法的应用;沈祖培等;《核动力工程》;20030228;第24卷(第1期);第68-72页 * |
| 田湾核电站失去外电源的概率风险评估;宋云亭等;《核动力工程》;20031031;第24卷(第5期);第478-481页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103514969A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103514969B (en) | Power supply system failure and consequence analyzing method | |
| CN106655478A (en) | Low-voltage emergency safety power supply system of household garbage power plant and control method of system | |
| CN108155663A (en) | The method for controlling distribution micro-capacitance sensor | |
| CN101299536A (en) | Power system safety stabilization emergency control policy automatically matching method | |
| CN206575222U (en) | Waste-to-energy plant low pressure emergency security power system | |
| Abdali et al. | Fast fault detection and isolation in low-voltage DC microgrids using fuzzy inference system | |
| CN110912109A (en) | Low-voltage direct-current power supply and distribution equipment and method | |
| Yusof et al. | A new under‐voltage load shedding scheme for islanded distribution system based on voltage stability indices | |
| Clouston et al. | Field demonstration of a distribution static compensator used to mitigate voltage flicker | |
| Nnonyelu et al. | Power system contingency analysis: a study of Nigeria’s 330KV transmission grid | |
| Yang et al. | The influences and countermeasures of wind farm access to transmission line differential protection | |
| CN207184154U (en) | A kind of wiring construction of the public diesel generating set of medium-sized thermal power generation unit | |
| CN105391033A (en) | Layered domain-partitioned anti-islanding protection method for large-scale wind power generation | |
| Oyon et al. | Three Phase Fault Analysis Using Thermal-Magnetic Circuit Breaker and Overcurrent Relay | |
| Zhong et al. | Cascading failure model of AC-DC system and blackout mechanism analysis | |
| CN102315648B (en) | 100-kilowatt nickel-hydrogen energy storage monitoring system and monitoring method thereof | |
| CN106505530B (en) | A kind of guard method of the low-voltage distribution cabinet based on SVG grid connection test and device | |
| Wang et al. | The analysis and simulation of commutation failure and protection strategies | |
| CN105703341B (en) | There is the layering point domain isolated island guard method of anti-jump function for large-scale wind power | |
| Hedel et al. | Reliability assessment of protection system for DC Ring microgrid using fault tree method | |
| CN104348133B (en) | Reactor protection system internal electric source interlocking controller | |
| CN206922422U (en) | A kind of single line of power plant sends out line fault protection system | |
| Feng et al. | Study on online recognition method of renewable energy cascading tripping evaluation based on machine learning | |
| CN111384707B (en) | Nuclear power plant ultrahigh voltage combined switch station supplementary tripping device and method | |
| Parashar et al. | Fault current limiters for transmission & distribution networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |