CN1399383A - Fuzzy control method for relay protection of very-high voltage power equipment - Google Patents
Fuzzy control method for relay protection of very-high voltage power equipment Download PDFInfo
- Publication number
- CN1399383A CN1399383A CN 02113161 CN02113161A CN1399383A CN 1399383 A CN1399383 A CN 1399383A CN 02113161 CN02113161 CN 02113161 CN 02113161 A CN02113161 A CN 02113161A CN 1399383 A CN1399383 A CN 1399383A
- Authority
- CN
- China
- Prior art keywords
- value
- ratio
- protection
- declare
- result
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Transformers (AREA)
Abstract
The present invention relates to the protection of main power equipment in power system. The real-time parameters are made to enter to intelligent measurement and control to constitute the protection circuit and control output. It includes two parts of reliable real-time data collection and the judgement of operation state in "three ratio method". Electrical qualities are collected via hardware platform and processed through fuzzy theorization and intelligent judgement to judge state; while the non-electrical qualities are measured via digital analyzer and intellgient measuring and controlling loop and used in judging state.
Description
Technical field
The invention belongs to field of power, the relay protecting method of particularly electric power system ultra high voltage (750KV and more than) main apparatus.
Background technology
Relaying protection is the important component part of electric power system.As the extra-high voltage electric power system; declaring correctly, fast, reliably, delicately of its main apparatus is out of order; the excision faulty equipment prevents that to system safety operation fault expansion from making main equipment badly damaged is the important indicator of weighing main equipment relaying protection performance quality.Power system main equipment relaying protection at present all is in fault and the back takes place by fault-signal differentiation, the excision fault of walking unhurriedly.This configuration does not make full use of the normal state safety interlocking outlet of the parameter of running, forms hardware device easily and damages, and factors such as software inefficacy out of control, electromagnetic interference or partial operation mistake cause equipment operation malfunction and fault to fail to judge, misjudge tripping.The home and abroad actual conditions also prove absolutely because of above-mentioned configuration has considerable influence to equipment operation and system safety.
Summary of the invention
The objective of the invention is for overcoming the weak point of protection configuration of present home and abroad and criterion technology; propose a kind ofly can effectively to prevent erroneous judgement, malfunction, fail to judge, tripping, have very sensitive, fast, the fuzzy control method for relay protection of very-high voltage power equipment of security feature.
Technical solution of the present invention:
A kind of fuzzy control method for relay protection of very-high voltage power equipment is characterized in that, may further comprise the steps:
A. make full use of real-time data acquisition and processing platform, adopt each electric parameters (electric current, voltage, the 3U of winner's equipment running process
0, 3I
0Deng), declare a n 〉=5;
B. to adopt each data volume and processing (getting power frequency component, secondary, triple-frequency harmonics) back declare synchronously fast by " three-ratio method " and ratio;
C. electric parameters and non-electric quantity are all declared by " three-ratio method " ratio result and each parameter of main equipment running status, the value of declaring is ternary with the n-2/n decision;
D. declare from the ratio of electric parameters and non-electric quantity and three-state, its criterion is:
If each electric parameters (or non-electric quantity) is always declared among the ratio result:
The value of declaring＞n-2/n value is a normal state, and then main equipment is judged to be normal state,
The value of declaring＞n-2/n value is for being worth attitude more, and then main equipment is judged to be and gives fault case,
The value of declaring＞n-2/n value is the high value attitude of fault, and then main equipment is judged to be fault case,
If each electric parameters (or non-electric quantity) is always declared ratio result＜n-2/n value, description status is not really declared, and it is fixed to treat to declare again again;
E. utilize " three-ratio method " decision state of each amount to declare again with other protection of relaying protection, determine to protect whether would trip of outlet loop, its comprehensive criterion is:
If each amount " three-ratio method " result is consistent with the protection result of determination to be fault, then export would trip;
The warning value for consistent if each amount " three-ratio method " result declares with protection, fortune is moved back in then give a warning also some damage property operations of locking, operation in good time;
If each amount " three-ratio method " result is a normal state, the locking outlet loop; As inconsistent, add to declare again again and decide with protection " normal state ".
The present invention adopts main apparatus running parameter real time monitoring with the intelligent monitoring method configuration superhigh pressure of fuzzy reasoning method and the main equipment relaying protection of above electric power system; the real-time acquisition technique of high-speed data of ultra-high voltage main device relaying protection is used in configuration of the present invention; the synchronous digital signal treatment technology is undertaken by fuzzy reasoning " three-ratio method " to real time data that wink is declared simultaneously and rapidly; the number that to gather in real time is by " normal state "; " attitude overflows "; " fault high value attitude " locatees and is defeated by that " numerical control outlet loop; the relaying protection in order to electric pressures at different levels is declared again is during main apparatus (as transformer; the shunt reactor etc.) protection that is specially adapted to superhigh pressure and above electrical voltage system is disposed.The present invention also adapts to ultra high voltage systematic electricity main equipment device, with differential mode gas (H in winding temperature, the gentle oil of insulating oil
2, CH
4, C
2H
2, C
2H
4, C
2H
6, CO, CO
2) monitoring in real time and fuzzy reasoning judgement, cooperate with electric parameters " three-ratio method " can effectively prevent erroneous judgement, malfunction, fail to judge, tripping, especially equipment is given fault and has very sensitive, quick, safe advantage by the reasoning intelligent monitoring.
The present invention can reach following performance index:
(1) makes full use of data acquisition and real-time processing platform, each electric parameters is gathered fast, handled, by " three-ratio method " value of declaring time＜5ms;
(2) control outlet loop by " three-ratio method " value of declaring result, can prevent effectively that electromagnetic interference and some relay protection circuit malfunctions from causing malfunction outlet tripping operation or cause the tripping of failing to judge of malfunction or fault because of hardware device device failure, software are out of control, reliability is improved cut much ice;
(3) from electric parameters, non-electric quantity in conjunction with the effective locking value alarm attitude reclosing etc. more of " three-ratio method " determining apparatus run mode, to protection give thus in earlier stage equipment, move back O﹠M in good time and protect device security and play fine effect.
The inventive method is applicable to each step voltage, especially the relaying protection of ultra high voltage (750KV and more than) main apparatus (transformer, shunt reactor).
Description of drawings
Fig. 1 is membership function " three-ratio method " curve chart.
Fig. 2 is a principle of the invention block diagram.
Fig. 3 is a differential mode gas identification BP network diagram in the oil.
Fig. 4 declares the principle assumption diagram that does well for state parameter through hidden neuron.
Embodiment
Fuzzy control method for relay protection of very-high voltage power equipment of the present invention is characterized in that may further comprise the steps:
(1) digitlization that is provided with by the main equipment relaying protection gather in real time and processing platform as public data, each parameter of running status is entered the intelligent monitoring loop in real time;
(2) disposed gaseous state monitoring device and " three-ratio method " digital assay instrument in winding temperature, insulating oil temperature and the oil as main equipment, the same input intelligent monitoring of each parameter ratio attitude loop has been participated in declare again;
(3) carry out reasoning and judging and integrated and " numerical control outlet loop " interface, every group of n value 〉=5 for electric parameters, treated press " three-ratio method " of non-electric quantity;
(4) " three-ratio method " ratio is judged normal state, the attitude that overflows, the high value attitude of fault, declare and that the operation shape belongs to normal operation, gives age at failure, the fault emergence period, its criterion is: divide two groups of parameters to declare again electric parameters, non-electric quantity, the value of declaring is judged above-mentioned three-state by the n-2/n value, for example:
In the n electric parameters＞the n-2 item for normal, give so, fault case, then declare respectively locking and export, send out a warning signal, start outlet;
In the n non-electric quantity＞the n-2 item for normal, give so, fault case, declares equally and locking, alarm, startup outlet, but non-electric quantity lags behind relatively slightly;
(5) real-time (being mainly electric parameters) declared again by other protection of " three-ratio method " judgement master status and relaying protection in the utilization " fuzzy reasoning intelligent monitoring method ", and outlet loop is protected in control.
The present invention proposes the requirement of main apparatus reliability of relay protection that relaying protection fuzzy reasoning intelligent monitoring method adapts to the extra-high voltage electric power system, rapidity, judgement fault.Fuzzy reasoning intelligent monitoring method of the present invention is that the basis is undertaken quick wink of each value is declared by reasoning " three-ratio method " in real time with fuzzy theory to the electric parameters of running and the real-time high-precision image data of non-electric quantity; Fig. 1 is membership function " three-ratio method " curve chart; with each electric parameters of main apparatus of running and " normal state " in non-electric quantity and the membership function curve; " be worth attitude more "; " the high value of fault attitude " compares in real time; determine each value state of living in; combine a certain attitude, effectively start and locking outlet and the signal circuit that determining apparatus is in three-state with relaying protection by declaring scheme again.
Fig. 2 is the invention process block diagram, and voltage U, electric current I are measured, gathered for each electric parameters and a whole set of protection and to handle corresponding each electric parameters in real time public, state under judging by " three-ratio method " inference rule; The differential mode gas content is surveyed to analyse also through sensitivity and is judged state of living in by fuzzy reasoning in the winding temperature of main equipment, oil temperature, the oil, implements the run mode of determining apparatus effectively through the block diagram of Fig. 2.
Fig. 3 is a gaseous state monitoring device fit structure schematic diagram in digital assay instrument and the oil, declares by real-time reasoning in this BP network diagram.
Fig. 4 combines with Fig. 3 to judge the neural hidden layer Principles of Network of each non-electric quantity run mode of living in structure, with each non-electric quantity input synchronously relatively.
The present invention adopts parameter, associated electrical tolerance and non-electric quantity in the complete equipment protective device into formation intelligent monitoring method; it is a kind of anti-error way that improves equipment operation safety, compensation relay protected operation process generation differential mode; can be widely used in various electric pressures, gather in the main apparatus protective device of structure, come down to one of intelligent backup protection according to each electric weight and non electrical quantity.
Claims (1)
1, a kind of fuzzy control method for relay protection of very-high voltage power equipment is characterized in that, may further comprise the steps:
A. make full use of real-time data acquisition and processing platform, adopt each electric parameters (electric current, voltage, the 3U of winner's equipment running process
0, 3I
0Deng), declare a n 〉=5;
B. to adopt each data volume and processing (getting power frequency component, secondary, triple-frequency harmonics) back declare synchronously fast by " three-ratio method " and ratio;
C. electric parameters and non-electric quantity are all declared by " three-ratio method " ratio result and each parameter of main equipment running status, the value of declaring is ternary with the n-2/n decision;
D. declare from the ratio of electric parameters and non-electric quantity and three-state, its criterion is:
If each electric parameters (or non-electric quantity) is always declared among the ratio result:
The value of declaring＞n-2/n value is a normal state, and then main equipment is judged to be normal state,
The value of declaring＞n-2/n value is for being worth attitude more, and then main equipment is judged to be and gives fault case,
The value of declaring＞n-2/n value is the high value attitude of fault, and then main equipment is judged to be fault case,
If each electric parameters (or non-electric quantity) is always declared ratio result＜n-2/n value, description status is not really declared, and it is fixed to treat to declare again again;
E. utilize " three-ratio method " decision state of each amount to declare again with other protection of relaying protection, determine to protect whether would trip of outlet loop, its comprehensive criterion is:
If each amount " three-ratio method " result is consistent with the protection result of determination to be fault, then export would trip;
The warning value for consistent if each amount " three-ratio method " result declares with protection, fortune is moved back in then give a warning also some damage property operations of locking, operation in good time;
If each amount " three-ratio method " result is a normal state, the locking outlet loop; As inconsistent, add to declare again again and decide with protection " normal state ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021131619A CN1310389C (en) | 2002-06-02 | 2002-06-02 | Fuzzy control method for relay protection of very-high voltage power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021131619A CN1310389C (en) | 2002-06-02 | 2002-06-02 | Fuzzy control method for relay protection of very-high voltage power equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1399383A true CN1399383A (en) | 2003-02-26 |
| CN1310389C CN1310389C (en) | 2007-04-11 |
Family
ID=4742480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021131619A Expired - Lifetime CN1310389C (en) | 2002-06-02 | 2002-06-02 | Fuzzy control method for relay protection of very-high voltage power equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1310389C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356650C (en) * | 2005-08-26 | 2007-12-19 | 清华大学 | Intelligent data collecting and overvoltage protective system for high and medium voltage power device |
| CN101692113B (en) * | 2009-10-12 | 2012-05-23 | 天津大学 | Method for diagnosing fault of power transformer on the basis of interval mathematical theory |
| CN104849541A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current protection system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206510Y (en) * | 1994-08-29 | 1995-08-30 | 云梦县电力科技开发公司 | Comprehensive logical judge relay protector for transformer substation |
| CN2368206Y (en) * | 1999-04-21 | 2000-03-08 | 国家电力公司南京电力自动化设备总厂 | Microcomputor delay protection device for power equipment |
-
2002
- 2002-06-02 CN CNB021131619A patent/CN1310389C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356650C (en) * | 2005-08-26 | 2007-12-19 | 清华大学 | Intelligent data collecting and overvoltage protective system for high and medium voltage power device |
| CN101692113B (en) * | 2009-10-12 | 2012-05-23 | 天津大学 | Method for diagnosing fault of power transformer on the basis of interval mathematical theory |
| CN104849541A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current protection system |
| CN104849541B (en) * | 2015-05-14 | 2018-02-23 | 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 | A kind of method for realizing voltage measurement abnormality detection in DC protection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1310389C (en) | 2007-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ashok et al. | Fault diagnosis scheme for cross-country faults in dual-circuit line with emphasis on high-impedance fault syndrome | |
| CN113533910A (en) | Method and system suitable for converter transformer partial discharge early warning | |
| CN112328961A (en) | On-line monitoring device quality evaluation system based on fault tree and Bayesian network | |
| CN109888729A (en) | A kind of early warning type transformer protection method and device | |
| MX2009002646A (en) | Apparatus, systems and methods for reliably detecting faults within a power distribution system. | |
| CN109884436B (en) | Online monitoring method for power capacitor complete equipment | |
| CN1310389C (en) | Fuzzy control method for relay protection of very-high voltage power equipment | |
| CN111505441A (en) | Short-circuit fault judgment method and system for small-load current circuit and fault indicator | |
| CN115632379A (en) | Multi-way detection arc light protection system for vcs isolating switch box | |
| CN115600879A (en) | Circuit breaker abnormity early warning method, system and related device | |
| CN107329018A (en) | A kind of substation relay protection systematic survey link hidden failure detection method | |
| CN1300907C (en) | Quick differential protective discrimination for critical blocking surge parameter and adaptation of parameter | |
| CN117269843B (en) | On-line monitoring method and system for neutral line running state of secondary current loop | |
| CN1310390C (en) | Fault-tolerant quick discrimination method for differential protection of parallel reactor | |
| CN112083267A (en) | Power distribution network line fault identification method, device and system | |
| CN110320414A (en) | It is a kind of applied to the precharge Phase sequence detection of single-phase SVG and guard method and device | |
| CN116736043B (en) | Active enhancement detection method for line fault characteristics of power system | |
| Yadav et al. | Fault Detection and Location in Power System Using Fuzzy Logic Controller: A Review | |
| Yan et al. | A hidden fault diagnosis method of relay protection considering the lack of sample synchronization | |
| Su et al. | Research on Fault Diagnosis Method of High Voltage Circuit Breaker Based on gray Relational Analysis and DS Evidence Theory | |
| CN117761584B (en) | Fault detection method and device for power transformer, electronic equipment and medium | |
| CN113675819B (en) | Inter-turn protection method and device of reactor and electronic equipment | |
| Miao | Design of power network fault diagnosis based on time series matching | |
| Suyama | Functional safety analysis of reliable control systems using decision by majority | |
| CN1399381A (en) | Quick discrimination method for dynamic impedance of parallel reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING GUODIAN NANJING GRID AUTOMATION CO., LTD. Free format text: FORMER OWNER: NANJING AUTOMATION CO., LTD., CHINA ELECTRONICS CORP. Effective date: 20121129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 211100 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121129 Address after: 211100 No. 8 SIEMENS Road, Jiangning Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Guodian Nanjing Grid Automation Co., Ltd. Address before: 210003, No. 38, new exemplary Road, Nanjing, Jiangsu Patentee before: Nanjing Automation Co., Ltd., China Electronics Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070411 |