CN103760440A - Power system fault monitoring method and system - Google Patents
Power system fault monitoring method and system Download PDFInfo
- Publication number
- CN103760440A CN103760440A CN201410021316.9A CN201410021316A CN103760440A CN 103760440 A CN103760440 A CN 103760440A CN 201410021316 A CN201410021316 A CN 201410021316A CN 103760440 A CN103760440 A CN 103760440A
- Authority
- CN
- China
- Prior art keywords
- electric
- power system
- electric power
- fault monitoring
- protecting device
- 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.)
- Pending
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a power system fault monitoring method. The power system fault monitoring method comprises the steps of generating a power flow network structure through an electric system, calculating the operating parameters of the electric system, simulating the electric system according to the calculated operating parameters, and monitoring the fault of a microcomputer protection device in the electric system according to the simulation result. In addition, the invention discloses a power system fault monitoring system. According to the power system fault monitoring method, the real-time power flow network structure is generated through modeling of the electric system, simulating monitoring physical quantity of the actual electric system is obtained through simulation model calculation, electric monitoring quantity is directly input into a comprehensive protection device to simulate the on-site running condition of the electric system, and therefore on-line monitoring and examining of the power system fault can be achieved efficiently and accurately.
Description
Technical field
The present invention relates to technical field of power systems, relate in particular to a kind of electric power system fault monitoring method and a kind of electric power system fault monitoring system.
Background technology
Electric system is broken down and is can hardly be avoided, on element after fault occurs in electric system, the variation of electric current, voltage is subject to the impact of the factors such as fault type, the position of fault, network structure and Real-time Power Flow, and may occur multiple failure.Therefore, electric power system fault is monitored accurately and effectively and seemed particularly important, wherein, crucial especially for the monitoring of microcomputer protecting device in electric system.At present; many CPU protection measure and control devices that electric system comprehensive protector adopts software, hardware to combine mostly; can integrate defencive function, measurement function and control function, and be furnished with network interface, can be by information conveyance to supervisory system by network interface.Whether protection logic and the setting valve of testing one by one microcomputer protecting device be reasonable, by computer integrated protection tester, carrys out trigger protection device, checks the correctness of trip signal and warning model.Not only inefficiency of current way, and precision is lower, is difficult to realize the on-line monitoring of electric power system fault.
Summary of the invention
Based on this, the invention provides a kind of electric power system fault monitoring method and a kind of electric power system fault monitoring system.
A kind of electric power system fault monitoring method, comprises the following steps:
By electric system modeling, generate direction of energy network structure, and calculate the operational factor of electric system;
According to the described operational factor of calculating, Operation of Electric Systems is carried out to emulation;
According to described simulation result, the fault of microcomputer protecting device in electric system is monitored.
Compared with general technology; electric power system fault monitoring method of the present invention generates real-time direction of energy network structure by electric system modeling; by realistic model, calculate the monitors physical amount of simulation practical power systems; directly by electric monitoring variable access integrated protection protective device; be used for the on-the-spot ruuning situation of emulation electric system, and then can more efficiently and accurately realize electric power system fault on-line monitoring and verification.
A kind of electric power system fault monitoring system, computing module, emulation module and monitoring modular;
Described computing module, for generating direction of energy network structure by electric system modeling, and calculates the operational factor of electric system;
Described emulation module, for according to the described operational factor of calculating, carries out emulation to Operation of Electric Systems;
Described monitoring modular, for according to described simulation result, monitors the fault of microcomputer protecting device in electric system.
Compared with general technology; electric power system fault monitoring system of the present invention generates real-time direction of energy network structure by electric system modeling; by realistic model, calculate the monitors physical amount of simulation practical power systems; directly by electric monitoring variable access integrated protection protective device; be used for the on-the-spot ruuning situation of emulation electric system, and then can more efficiently and accurately realize electric power system fault on-line monitoring and verification.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of electric power system fault monitoring method of the present invention;
Fig. 2 is the structural representation of electric power system fault monitoring system of the present invention.
Embodiment
For further setting forth the technological means that the present invention takes and the effect obtaining, below in conjunction with accompanying drawing and preferred embodiment, to technical scheme of the present invention, know and complete description.
Referring to Fig. 1, is the schematic flow sheet of electric power system fault monitoring method of the present invention.
A kind of electric power system fault monitoring method, comprises the following steps:
S101 generates direction of energy network structure by electric system modeling, and calculates the operational factor of electric system;
S102, according to the described operational factor of calculating, carries out emulation to Operation of Electric Systems;
S103, according to described simulation result, monitors the fault of microcomputer protecting device in electric system.
According to design data, set up object of protection model.As one of them embodiment, in the electric power system model of foundation, comprise generator, transformer, bus, motor, arc suppression coil, lightning arrester, capacitor, disconnecting link and circuit.
Electric power system model comprises generator, transformer, bus, motor, arc suppression coil, lightning arrester, capacitor, disconnecting link, circuit etc.Model can intactly be simulated electric system (comprising once and secondary device), the electric network composition of simulation keeps identical with power equipment and actual electric network, the following actual conditions of real reflection: normal network control operation, line switching disconnecting link state, solution between system side by side with close Open Loop Operation, switch tool operation, the generator load adjusting of exerting oneself, capacity reactance device switching, load tap changer regulates and state is moved back in the throwing of protective device, earth mat and major network off-the-line, UFLS, inverse probability off-the-line, automatic closing, system earth fault, in Failure Simulation scope, determined power grid accident is (as bus and line short, ground connection etc.).
The online important feature of calculation of fault, as considered external network equivalent, considers outer net zero sequence, considers outer net size mode, considers the impact of transformer neutral point ground cutter and arc suppression coil etc., to meet the requirement of practical application.
The real-time physical amount that power system simulation model calculates is as follows: A phase current, B phase current, C phase current, A phase voltage, B phase voltage, C phase voltage, AB phase voltage, BC phase voltage, AC phase voltage, mains frequency, residual voltage, zero-sequence current, phasing degree, active power and reactive power.
Start realistic model computing function, calculate and have three kinds of states: running status, halted state and final state.
As one of them embodiment, after the fault of microcomputer protecting device in electric system is monitored, the microcomputer protecting device breaking down in electric system is carried out to verification.
Above-mentioned way can be monitored and verification electric power system fault online in real time, has guaranteed the safety and stability of Operation of Electric Systems.
Online power flow calculates the information that can provide system running state, and the precise results that can provide disturbance when system generation disturbance (generator, power transmission line cut-off, exert oneself Load Regulation, transformer separately regulate etc.) after, system load flow distributes and the variation of system voltage frequency, complete the setting of forecast accident, export in real time electric monitoring variable.
As one of them embodiment, protection logic and setting valve to microcomputer protecting device carry out verification.Described setting valve is secondary setting valve.
The effect of the action that can simulate corresponding various protections to electrical network primary system; Protection pressing plate in secondary circuit is thrown and is moved back; Can react load variations situation after low-frequency load reduction action and the dynamic changing process of frequency.
Protection aut.eq. to be verified, if adopt entity device, needs by modulus port, through transforming, to be then just connected to the terminal connections place of cabinet, the tripping operation information exchange of protective device is crossed to network interface simultaneously and feeds back to grid simulation computation model.Protective device setting valve can effectively be detected whether reasonable.
As a preferred embodiment, realizing when of the present invention, in conjunction with graphical Modeling Platform, can form the dispatching of power netwoks analogue system of arbitrary structures, calculate in real time electric power system tide, for engineering technical personnel provide harmless experimental data.Modularization modeling; in-circuit emulation can be carried out design proposal simulation, operational failure analysis, optimization; possesses open data-interface and programming modeling interface; can need to carry out according to electrical network deep level development of functional or simulation etc., form electric system comprehensive protector on-line monitoring software easily.This software basic function is as follows:
Possess friendly perfect electric network fault function be set, various malfunctions that can simulating grid, standby manually, automatically, the fault such as logic, programming arranges function.
Engineering analysis and Optimum Operation test: professional and technical personnel can be by carrying out running test, the analysis of different modes, different operating modes in analogue system to electrical network; the test that Protection parameters is adjusted, the test findings obtaining and data have definite, effective directive significance to dispatching of power netwoks operation.
The fault analysis of actual electric network and monitoring: when electrical network has an accident, can use the historical data of dispatching of power netwoks supervisory system in analogue system, to carry out the historical playback of system, and allow owner to implement fault preview targetedly, its manoeuvre process should be consistent with the dynamic change net result of electrical network with result, can be according to the multianalysis to accident phenomenon, assist dispatcher to find out failure cause, and the Operating Guideline of correct processing accident is provided.
Real-time online protected data setting valve: verification both can adopt virtual soft dial plate technical modelling part protection screen of transformer substation operation and show, also substation operation parameter directly can be accessed to actual integrated protection unit by digital-to-analogue conversion interface.
Support module graphical modeling instrument carries out grid simulation modeling, easy and simple to handle.Support graphical modeling and without programming, but can carry out model packing; Support senior Procedure modeling technology, allow technician to carry out senior model and set up.
Compared with general technology; electric power system fault monitoring method of the present invention generates real-time direction of energy network structure by electric system modeling; by realistic model, calculate the monitors physical amount of simulation practical power systems; directly by electric monitoring variable access integrated protection protective device; be used for the on-the-spot ruuning situation of emulation electric system, and then can more efficiently and accurately realize electric power system fault on-line monitoring and verification.
The present invention relates to the calculating of direction of energy network in real-time simulation; and can carry out communication with electrical system second protection equipment by Computer I/O port, reach the verification and the correction that according to real time fail computational data, realize equipment complex microcomputer protecting device secondary setting valve.
Referring to Fig. 2, is the structural representation of electric power system fault monitoring system of the present invention.
Electric power system fault monitoring system of the present invention, comprises computing module 201, emulation module 202 and monitoring modular 203;
Described computing module 201, for generating direction of energy network structure by electric system modeling, and calculates the operational factor of electric system;
Described emulation module 202, for according to the described operational factor of calculating, carries out emulation to Operation of Electric Systems;
Described monitoring modular 203, for according to described simulation result, monitors the fault of microcomputer protecting device in electric system.
As one of them embodiment, in the electric power system model that described computing module is set up, comprise generator, transformer, bus, motor, arc suppression coil, lightning arrester, capacitor, disconnecting link and circuit.
As one of them embodiment, electric power system fault monitoring system of the present invention also comprises correction verification module; Described correction verification module, carries out verification for the microcomputer protecting device that electric system is broken down.
As one of them embodiment, protection logic and the setting valve of described correction verification module to microcomputer protecting device carries out verification.Described setting valve is secondary setting valve.
Compared with general technology; electric power system fault monitoring system of the present invention generates real-time direction of energy network structure by electric system modeling; by realistic model, calculate the monitors physical amount of simulation practical power systems; directly by electric monitoring variable access integrated protection protective device; be used for the on-the-spot ruuning situation of emulation electric system, and then can more efficiently and accurately realize electric power system fault on-line monitoring and verification.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an electric power system fault monitoring method, is characterized in that, comprises the following steps:
By electric system modeling, generate direction of energy network structure, and calculate the operational factor of electric system;
According to the described operational factor of calculating, Operation of Electric Systems is carried out to emulation;
According to described simulation result, the fault of microcomputer protecting device in electric system is monitored.
2. electric power system fault monitoring method according to claim 1, it is characterized in that, in the described step that generates direction of energy network structure by electric system modeling, in the electric power system model of foundation, comprise generator, transformer, bus, motor, arc suppression coil, lightning arrester, capacitor, disconnecting link and circuit.
3. electric power system fault monitoring method according to claim 1, is characterized in that, after the described step that the fault of microcomputer protecting device in electric system is monitored, comprises the following steps:
The microcomputer protecting device breaking down in electric system is carried out to verification.
4. electric power system fault monitoring method according to claim 3, is characterized in that, described step of the microcomputer protecting device breaking down in electric system being carried out to verification, comprises the following steps:
Protection logic and setting valve to microcomputer protecting device carry out verification.
5. electric power system fault monitoring method according to claim 4, is characterized in that, described protection logic and setting valve to microcomputer protecting device carries out in the step of verification, and described setting valve is secondary setting valve.
6. an electric power system fault monitoring system, is characterized in that, comprises computing module, emulation module and monitoring modular;
Described computing module, for generating direction of energy network structure by electric system modeling, and calculates the operational factor of electric system;
Described emulation module, for according to the described operational factor of calculating, carries out emulation to Operation of Electric Systems;
Described monitoring modular, for according to described simulation result, monitors the fault of microcomputer protecting device in electric system.
7. electric power system fault monitoring system according to claim 6, is characterized in that, in the electric power system model that described computing module is set up, comprises generator, transformer, bus, motor, arc suppression coil, lightning arrester, capacitor, disconnecting link and circuit.
8. electric power system fault monitoring system according to claim 6, is characterized in that, also comprises correction verification module;
Described correction verification module, carries out verification for the microcomputer protecting device that electric system is broken down.
9. electric power system fault monitoring system according to claim 8, is characterized in that, protection logic and the setting valve of described correction verification module to microcomputer protecting device carries out verification.
10. electric power system fault monitoring system according to claim 9, is characterized in that, described setting valve is secondary setting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021316.9A CN103760440A (en) | 2014-01-16 | 2014-01-16 | Power system fault monitoring method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021316.9A CN103760440A (en) | 2014-01-16 | 2014-01-16 | Power system fault monitoring method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103760440A true CN103760440A (en) | 2014-04-30 |
Family
ID=50527709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410021316.9A Pending CN103760440A (en) | 2014-01-16 | 2014-01-16 | Power system fault monitoring method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103760440A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995729A (en) * | 2014-05-05 | 2014-08-20 | 中国南方电网有限责任公司电网技术研究中心 | Software system of analog simulation line protection device |
| CN106251748A (en) * | 2016-10-14 | 2016-12-21 | 陈丽黄 | A kind of electric power system fault analog |
| CN116008733A (en) * | 2023-03-21 | 2023-04-25 | 成都信息工程大学 | Single-phase grounding fault diagnosis method based on integrated deep neural network |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105550A (en) * | 2013-01-14 | 2013-05-15 | 湖北省电力公司电力科学研究院 | Detection method and detection system of intelligent relay protection device |
-
2014
- 2014-01-16 CN CN201410021316.9A patent/CN103760440A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105550A (en) * | 2013-01-14 | 2013-05-15 | 湖北省电力公司电力科学研究院 | Detection method and detection system of intelligent relay protection device |
Non-Patent Citations (7)
| Title |
|---|
| 孙伟涛: "基于组件的电力***保护培训仿真***", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 武晓朦 等: "电力***的P-Q分解法潮流计算", 《现代电子技术》 * |
| 牛会生: "电力***潮流计算机仿真分析", 《现代商贸工业》 * |
| 谌争鸣 等: "全数字化继电保护测试***设计", 《电力自动化设备》 * |
| 谭波: "大型抽水蓄能机组实时动态仿真模型的研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 陈冬沣 等: "含分布式电源的地区电网潮流计算研究", 《广东电力》 * |
| 齐志华: "微机变压器保护定值整定与校验", 《自动化与仪器仪表》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995729A (en) * | 2014-05-05 | 2014-08-20 | 中国南方电网有限责任公司电网技术研究中心 | Software system of analog simulation line protection device |
| CN103995729B (en) * | 2014-05-05 | 2017-11-07 | 中国南方电网有限责任公司电网技术研究中心 | Software system of analog simulation line protection device |
| CN106251748A (en) * | 2016-10-14 | 2016-12-21 | 陈丽黄 | A kind of electric power system fault analog |
| CN106251748B (en) * | 2016-10-14 | 2018-09-25 | 陈颐 | A kind of electric power system fault simulator |
| CN116008733A (en) * | 2023-03-21 | 2023-04-25 | 成都信息工程大学 | Single-phase grounding fault diagnosis method based on integrated deep neural network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | A multiagent system-based protection and control scheme for distribution system with distributed-generation integration | |
| CN102193504B (en) | Safety and stability control system modeling method in power system dynamic simulation | |
| CN102332709B (en) | Equivalent high-voltage direct-current transmission direct-current protection digital simulation method and system | |
| CN105576660B (en) | Local distribution network in-circuit emulation analytical equipment and system | |
| CN1333503C (en) | Protection and fault positioning method for generator stator winding single-phase earthing | |
| CN103257582A (en) | Direct-current control protection simulation device based on RTDS | |
| CN107887879A (en) | A kind of relay protection constant value on-line check system | |
| CN105917539A (en) | Method and apparatus of reactor turn-to-turn protection | |
| KR101611048B1 (en) | system and method for training virtual fault of electric power system | |
| WO2014180125A1 (en) | Method for security check of operation ticket based on disturbance assessment and trend analysis | |
| Pourbeik et al. | An aggregate dynamic model or distributed energy resources or power system stability studies | |
| CN103760893A (en) | Closed-loop test system and test method for frequency adaptability of alternating current control protection device | |
| CN103760440A (en) | Power system fault monitoring method and system | |
| CN103823143B (en) | The emulation mode of substation equipment safety analysis after a kind of extra-high voltage increase-volume | |
| CN203101860U (en) | Direct-current control protection simulator based on real time digital system (RTDS) | |
| CN104361524A (en) | Distribution network frame structure analysis method | |
| Elkhatib et al. | Protection of Renewable-dominated Microgrids: Challenges and Potential Solutions. | |
| Martinez‐Velasco | Introduction to electromagnetic transient analysis of power systems | |
| CN110071499B (en) | Method and system for rapidly judging safety loop closing of power distribution network | |
| Taylor et al. | Reducing blackout risk by a wide-area control system (WACS): Adding a new layer of defense | |
| Ananda et al. | Multi-agent based protection on highly dominated distributed energy resources | |
| Elshahed | Assessment of sudden voltage changes and flickering for a grid-connected photovoltaic plant | |
| Pimjaipong et al. | Blackout prevention plan-The stability, reliability and security enhancement in Thailand power grid | |
| Shalash et al. | New reliability index for power system protection based on multi-agent technique | |
| CN108964145A (en) | A kind of low-frequency load shedding, overfrequency cut the test method and system of machine device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140430 |
|
| RJ01 | Rejection of invention patent application after publication |