CN104483596B - Circuit two ends protection time irreversibility time fault information association method and system - Google Patents
Circuit two ends protection time irreversibility time fault information association method and system Download PDFInfo
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Abstract
The present invention disclose a kind of circuit two ends protection time irreversibility time fault information association method and system; first the method judges it is single failure or continuous several times fault by failure message; then according to different failure conditions; failure message is carried out classified finishing; failure message is carried out time-sequencing and calculates fault-time; finally in conjunction with fault sequential and fault-time double standards mate, the present invention can ensure the exactness of failure message matching result.
Description
Technical field
The present invention relates to relay protection of power system technical field, particularly relate to the fault information association method during protection time irreversibility of a kind of circuit two ends, and the fault information association system during protection time irreversibility of a kind of circuit two ends.
Background technology
The platform that relay protection and fault information system is collected as on-the-spot Plant Information PI, arranged and analyze is the technology support system of relaying specialty. The normal operation of the intelligent electronic device such as relaying, failure wave-recording device, abnormality alarming and failure message are collected in the failure information system system substation of plant stand end; the main station system being positioned at dispatching terminal is delivered to, it is achieved to the timely diagnosis after the supervision of on-the-spot two system and device running statuses and electric network fault on after preliminary treatment. The construction of system is conducive to scheduling department to grasp rapidly the actual faulty condition of electrical network and relaying action behavior; immediate analysis power grid accident, rapidly make accurate judgment and quick recovery system; contribute to grasping relay protection device situation simultaneously; effectively analyze relaying action behavior, it is to increase management and running and operation and management level.
When power system is broken down, failure information system is by the recorder data under failure wave-recording device record trouble state, thus sets up the necessary basic data of relay protection and fault information system. The failure message of oscillograph collection comprises:
(1) by the voltage of the distribution parameter participation role of circuit, short trouble or system operation causes, current temporary state change procedure. Whether the action behavior that the record of this process is mainly used in analyzing relaying device and safety automation device is correct. Being characterized in: being generally not less than 5kHz, sample frequency is higher, omnidistance writing time is short, generally no longer than 1s.
(2) whole process that the system voltage that causes because of big disturbance, electric current, system frequency and wattless power, wattful power change. Understanding the Changing Pattern of each system electric parameter in the process of system temporal variations, the verification of the exactness of power system computation program and model parameter needs the record of this process. Being characterized in: general not higher than 1kHz, sample frequency is lower, omnidistance writing time is long, until whole temporal variations process terminates substantially.
(3) to the record of the effective power flow of bus voltage and frequency, main circuit, load tap changer position and safety automation device action behavior etc. It is characterized in: the general several seconds, once sample frequency was low, and omnidistance writing time is long. Present computer-based fault recorder can also pass through the communication interfaces such as RS485, RS232, by the recorder data of device record through communication network transmission to relay protection and fault information system.
Along with the formation of extensive electric power networks, failure information system produced problem in the gatherer process of failure message constantly amplifies along with the increase of Information Monitoring. Owing to there is inevitable time irreversibility problem between fault information system sub-station, the failure message of the same fault in circuit two ends cannot correctly be mated, especially, when continuous fault occurs in same circuit, the failure message of different faults even there will be the phenomenon of erroneous matching. The judgement of fault practical situation and fault handling and recovery all will be produced serious impact by incorrect failure message, it is thus desirable to circuit two ends failure message is carried out data fusion, make system automatically identify failure message corresponding to circuit two ends.
Comprehensive above analysis is known; relay protection and fault information system is when processing on substation the failure message sent; due to the time irreversibility between substation; there is the situation of fault circuit two ends failure message coupling difficulty; and when continuous fault occurs in same circuit, existing failure information system cannot realize the information matches problem of same fault.
Summary of the invention
Based on this, the present invention provide a kind of circuit two ends protection time irreversibility time fault information association method and system, when can be applicable to circuit two ends time irreversibility, when complex fault occurs, carry out the coupling of failure message.
The fault information association method during protection time irreversibility of circuit two ends, comprises the steps:
Obtaining on relay protection and fault information system the protection sent and start information, timing from first the protection startup information received, if only having a protection startup information within the default time, being then judged as single failure; If there is multiple protection startup information, then it is judged as continuous fault;
When being judged as single failure, judge whether the failure message sent on relay protection and fault information system is protection startup information, if protection startup information, then described failure message is recorded as protection and starts category information; If not being protection startup information, then whether failure judgement information is protection involution information, if protection involution information, then described failure message is recorded as protection involution category information; If not being protection involution information, then judge whether described failure message includes electric network fault sequence number NOF, if including electric network fault sequence number NOF, then it is the failure message at same fault circuit two ends by the failure message coupling having identical electric network fault sequence number NOF; If not comprising electric network fault sequence number NOF, then according to protection startup information and the involution information of complete correspondence, the protection of same side is started category information and protects involution category information to be recorded as same fault, and calculate fault-time according to the time of protection exit information and the record ripple of its correspondence, the failure message of both sides same fault time is recorded as the failure message of same fault;
When being judged as continuous fault, the all failure messages received are sorted out: judge whether described protection startup information is start first time according to the time in described failure message, if first time starts, then described failure message is recorded as the failure message of first time fault; If not being start first time, whether the protection involution category information of the last fault of inquiry then comprises the involution information of this protection, if including the involution information of this protection, then it is judged as that last time, fault terminated, described protection startup information is recorded as the failure message of second time fault; If not including the involution information of this protection, then described protection startup information is recorded as the failure message of last fault;
All protection startup information and protection involution information are recorded as complete failure sequence, and with time order and function sequence, calculate the fault-time of each fault respectively;
The failure message of circuit both sides is sorted respectively with the time of substation, described relay protection and fault information system place respectively, and by the failure message coupling of same fault time for a fault.
The fault information association system during protection time irreversibility of circuit two ends, comprising:
Data obtaining module, starting information for obtaining the protection sent on relay protection and fault information system, timing from first the protection startup information received, if only having a protection startup information within the default time, being then judged as single failure; If there is multiple protection startup information, then it is judged as continuous fault;
Single failure processing module, for when being judged as single failure, judging whether the failure message sent on relay protection and fault information system is protection startup information, if protection startup information, is then recorded as described failure message protection and starts category information; If not being protection startup information, then whether failure judgement information is protection involution information, if protection involution information, then described failure message is recorded as protection involution category information; If not being protection involution information, then judge whether described failure message includes electric network fault sequence number NOF, if including electric network fault sequence number NOF, then it is the failure message at same fault circuit two ends by the failure message coupling having identical electric network fault sequence number NOF; If not comprising electric network fault sequence number NOF, then according to protection startup information and the involution information of complete correspondence, the protection of same side is started category information and protects involution category information to be recorded as same fault, and calculate fault-time according to the time of protection exit information and the record ripple of its correspondence, the failure message of both sides same fault time is recorded as the failure message of same fault;
Continuous fault handling module, for when being judged as continuous fault, the all failure messages received are sorted out: judge whether described protection startup information is start first time according to the time in described failure message, if first time starts, then described failure message is recorded as the failure message of first time fault; If not being start first time, whether the protection involution category information of the last fault of inquiry then comprises the involution information of this protection, if including the involution information of this protection, then it is judged as that last time, fault terminated, described protection startup information is recorded as the failure message of second time fault; If not including the involution information of this protection, then described protection startup information is recorded as the failure message of last fault;
Fault-time calculates module, for all protection startup information and protection involution information are recorded as complete failure sequence, and with time order and function sequence, calculates the fault-time of each fault respectively;
Matching module, for sorting the failure message of circuit both sides respectively with the time of substation, described relay protection and fault information system place respectively, and by the failure message coupling of same fault time for a fault.
Circuit two ends of the present invention protection time irreversibility time fault information association method and system; fault-time is calculated according to the protection startup involution category information that failure information system gathers; first the failure message of circuit both sides is sorted with its local time respectively; mate again; also verify fault-time according to different faults, it is ensured that the reliability of failure message coupling simultaneously. The present invention considers single failure and continuous several times fault simultaneously, can mate failure message during single failure fast and effectively, using time series and fault-time jointly as foundation during continuous fault, greatly reduces the error rate of failure message coupling. Problem when the present invention does not exist gps clock pair, it is not necessary to install GPS synchronous apparatus additional, engineering is easy to realize. Meanwhile, there is not failure message coupling blind area in the present invention, the reliability height of information matches, it is possible to realize failure message coupling function fast and effectively, have practical meaning in engineering.
Accompanying drawing explanation
The information correlation method of Fig. 1 complex fault when to be the present invention protect time irreversibility based on circuit two ends schematic flow sheet in one embodiment.
The information correlation system of Fig. 2 complex fault when to be the present invention protect time irreversibility based on circuit two ends structural representation in one embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, it is the information correlation method of the present invention based on complex fault during the time irreversibility of transmitting line two ends, comprises the steps:
Step S11: obtain on relay protection and fault information system the protection sent and start information, timing from first the protection startup information received, within the default time (such as, can arrange acquiescence is 5 minutes, may also be other time, specifically can arrange according to actual needs), if only having a protection startup information, then it is judged as single failure, carries out step S12; If there is multiple protection startup information, then it is judged as continuous fault, carries out step S16;
Step S12: when being judged as single failure in step s 11, judges whether the failure message sent on relay protection and fault information system is protection startup information, if it does, then described failure message is recorded as protection start category information; If, then not carrying out step S13;
Step S13: whether failure judgement information is protection involution information, if it does, then be recorded as protection involution category information; If, then not carrying out step S14;
The failure message coupling having identical NOF if had, is then the failure message at same fault circuit two ends by step S14: whether failure judgement information includes electric network fault sequence number NOF; If no, then carrying out step 5;
Step S15: (namely corresponding its of a protection startup information of same device protects involution information with protection involution information to start information according to the protection of complete correspondence, also namely: when power equipment generation fault, after protector starting protection, generate protection startup information, if Failure elimination, then protector involution, generate protection involution information), the protection of same side is started information and protects involution information to be recorded as same fault, and calculate fault-time according to the time of protection exit information and the record ripple of its correspondence, the failure message of both sides same fault time is recorded as the failure message of same fault, single failure can realize correct coupling.
According to the time in described failure message, step S16: when being judged as continuous fault in step s 11, judges whether described protection startup information is start first time, if it does, then described failure message is recorded as the failure message of first time fault; If, then not carrying out step S17;
Step S17: the involution information whether comprising this protection in the protection involution category information of the last fault of inquiry, if it does, then be judged as that last time, fault terminated, is recorded as the failure message of second time fault by described protection startup information; If, then described protection startup information not being recorded as the failure message of last fault; Repeat step S16 until failure message is sorted out complete.
Step S18: all protection startup information and protection involution information are recorded as complete failure sequence, and sort according to the time in protection startup information and protection involution information, calculate the fault-time of each fault respectively;
Step S19: the failure message of circuit both sides is sorted respectively with the time of substation, described relay protection and fault information system place respectively, and by the failure message coupling of same fault time for a fault.
In a preferred embodiment, described relay protection and fault information system is connected with intelligent electronic device, obtains failure message, protection startup information and protection involution information that described intelligent electronic device sends.
In a preferred embodiment, described intelligent electronic device is relay protection device or failure wave-recording device.
Below again by the application process of two detailed the inventive method of specific embodiment.
For isolating switch 1 and isolating switch 2 that two connect,
Fault condition: isolating switch 1 switch is in t11 (10.1 second) tripping operation, and isolating switch 1 relaying starts at t12 (10.0 second), and isolating switch 1 is indulged UNPROFOR and protected and trip at t13 (10.1 second); Isolating switch 2 switch is in t21 (15.1 second) tripping operation, and isolating switch 2 relaying starts at t22 (15.0 second), and isolating switch 2 is indulged UNPROFOR and protected and trip at t23 (15.1 second).
Application the inventive method, adopts failure message matching process step as follows:
(1) judge that isolating switch 1 action is protection act event, judge that isolating switch 2 action is protection act event;
(2) judge that isolating switch 1 starts as element, file the protection for this fault and start category information, judge that isolating switch 2 starts as element, file the protection for this fault and start category information;
(3) judge that isolating switch 1 is as action element, file the protection protection act outlet category information for this fault, judge that isolating switch 2 is as action element, file the protection protection act outlet category information for this fault.
(4) isolating switch 1 is protected without NOF, and isolating switch 2 is protected without NOF;
(5) isolating switch 1 action relative time is 0.1s, and isolating switch 2 action relative time is 0.1s, is associated as with a failure message.
Fault condition: circuit a isolating switch 1 switch trips at t11 (10.1 second), isolating switch 1 relaying starts at t12 (10.0 second), isolating switch 1 is indulged UNPROFOR and is protected and trip at t13 (10.1 second), isolating switch 1 switch is in t14 (20 second) involution, circuit b isolating switch 2 relaying starts at t21 (15.0 second), isolating switch 2 switch is in t22 (25 second) involution, circuit b isolating switch 2 switch trips at t23 (15.1 second), isolating switch 2 relaying starts at t24 (30.0 second), isolating switch 2 is indulged UNPROFOR and is protected and trip at t25 (30.1 second), isolating switch 2 switch is in t26 (40 second) involution.
Application the inventive method, adopts failure message matching process step as follows:
(1) isolating switch 1 first time action is start first time, files the startup category information for first time fault;
(2) isolating switch 2 is not start first time;
(3) isolating switch 2 is protected and is transmitted complete startup, involution information;
(4) isolating switch 2 protects involution category information to comprise involution information first;
(5) the restarting time difference is greater than the involution time;
(6) first time fault terminates, and this protection starts filing for second time fault initiating category information.
According to analytical results when above-mentioned two faults, due to the time irreversibility at circuit two ends, when there is continuous fault in circuit, cause confusion according to the circuit two ends failure message that the local time uploads, the failure message at same fault circuit two ends cannot be differentiated, the method for application the present embodiment, first two ends failure message is sorted out respectively and basis local time-sequencing separately, carry out contrast coupling again, introduce verifying fault-time simultaneously, it is ensured that the reliability of failure message coupling.
As shown in Figure 2, the present invention also provides the fault information association system during protection time irreversibility of a kind of circuit two ends, comprising:
Data obtaining module 21, starting information for obtaining the protection sent on relay protection and fault information system, timing from first the protection startup information received, if only having a protection startup information within the default time, being then judged as single failure; If there is multiple protection startup information, then it is judged as continuous fault;
Single failure processing module 22, for when being judged as single failure, judging whether the failure message sent on relay protection and fault information system is protection startup information, if protection startup information, is then recorded as described failure message protection and starts category information; If not being protection startup information, then whether failure judgement information is protection involution information, if protection involution information, then described failure message is recorded as protection involution category information; If not being protection involution information, then judge whether described failure message includes electric network fault sequence number NOF, if including electric network fault sequence number NOF, then it is the failure message at same fault circuit two ends by the failure message coupling having identical electric network fault sequence number NOF; If not comprising electric network fault sequence number NOF, then according to protection startup information and the involution information of complete correspondence, the protection of same side is started category information and protects involution category information to be recorded as same fault, and the Time Calculation starting record in category information and protection involution category information according to described protection is out of order the time, and the failure message of both sides same fault time is recorded as the failure message of same fault;
Continuous fault handling module 23, for when being judged as continuous fault, the all failure messages received are sorted out: judge whether described protection startup information is start first time according to the time in described failure message, if first time starts, then described failure message is recorded as the failure message of first time fault; If not being start first time, whether the protection involution category information of the last fault of inquiry then comprises the involution information of this protection, if including the involution information of this protection, then it is judged as that last time, fault terminated, described protection startup information is recorded as the failure message of second time fault; If not including the involution information of this protection, then described protection startup information is recorded as the failure message of last fault;
Calculate module 24 fault-time, for all protection startup information and protection involution information are recorded as complete failure sequence, and with time order and function sequence, calculate the fault-time of each fault respectively;
Matching module 25, for by the failure message of circuit both sides respectively with the time-sequencing of substation, described relay protection and fault information system place, and by the failure message of same fault time coupling for a fault.
In a preferred embodiment, described relay protection and fault information system is connected with intelligent electronic device, obtains failure message, protection startup information and protection involution information that described intelligent electronic device sends.
In a preferred embodiment, described intelligent electronic device is relay protection device or failure wave-recording device.
Fault information association method during transmitting line two ends time irreversibility of the present invention and system; fault-time is calculated according to the protection startup involution category information that failure information system gathers; first the failure message of circuit both sides is sorted with its local time respectively; mate again; also verify fault-time according to different faults, it is ensured that the reliability of failure message coupling simultaneously. The present invention considers single failure and continuous several times fault simultaneously, can mate failure message during single failure fast and effectively, using time series and fault-time jointly as foundation during continuous fault, greatly reduces the error rate of failure message coupling. Problem when the present invention does not exist gps clock pair, it is not necessary to install GPS synchronous apparatus additional, engineering is easy to realize. Meanwhile, there is not failure message coupling blind area in the present invention, the reliability height of information matches, it is possible to realize failure message coupling function fast and effectively, have practical meaning in engineering.
The above embodiment only have expressed several enforcement modes of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to patent scope of the present invention. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the inventive concept of the premise 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 (6)
1. fault information association method during circuit two ends protection time irreversibility, it is characterised in that, comprise the steps:
Obtaining on relay protection and fault information system the protection sent and start information, timing from first the protection startup information received, if only having a protection startup information within the default time, being then judged as single failure; If there is multiple protection startup information, then it is judged as continuous fault;
When being judged as single failure, judge whether the failure message sent on relay protection and fault information system is protection startup information, if protection startup information, then described failure message is recorded as protection and starts category information; If not being protection startup information, then whether failure judgement information is protection involution information, if protection involution information, then described failure message is recorded as protection involution category information; If not being protection involution information, then judge whether described failure message includes electric network fault sequence number NOF, if including electric network fault sequence number NOF, then it is the failure message at same fault circuit two ends by the failure message coupling having identical electric network fault sequence number NOF; If not comprising electric network fault sequence number NOF, then corresponding according to same device protection starts information and involution information, the protection of same side is started category information and protects involution category information to be recorded as same fault, and calculate fault-time according to the time of protection exit information and the record ripple of its correspondence, the failure message of both sides same fault time is recorded as the failure message of same fault;
When being judged as continuous fault, the all failure messages received are sorted out: judge whether described protection startup information is start first time according to the time in described failure message, if first time starts, then described failure message is recorded as the failure message of first time fault; If not being start first time, whether the protection involution category information of the last fault of inquiry then comprises the involution information of this protection, if including the involution information of this protection, then it is judged as that last time, fault terminated, described protection startup information is recorded as the failure message of second time fault; If not including the involution information of this protection, then described protection startup information is recorded as the failure message of last fault;
All protection startup information and protection involution information are recorded as complete failure sequence, and with time order and function sequence, calculate the fault-time of each fault respectively;
The failure message of circuit both sides is sorted respectively with the time of substation, described relay protection and fault information system place respectively, and by the failure message coupling of same fault time for a fault.
2. circuit two ends according to claim 1 protection time irreversibility time fault information association method; it is characterized in that; described relay protection and fault information system is connected with intelligent electronic device, obtains failure message, protection startup information and protection involution information that described intelligent electronic device sends.
3. circuit two ends according to claim 2 protection time irreversibility time fault information association method, it is characterised in that, described intelligent electronic device is relay protection device or failure wave-recording device.
4. fault information association system during circuit two ends protection time irreversibility, it is characterised in that, comprising:
Data obtaining module, starting information for obtaining the protection sent on relay protection and fault information system, timing from first the protection startup information received, if only having a protection startup information within the default time, being then judged as single failure; If there is multiple protection startup information, then it is judged as continuous fault;
Single failure processing module, for when being judged as single failure, judging whether the failure message sent on relay protection and fault information system is protection startup information, if protection startup information, is then recorded as described failure message protection and starts category information; If not being protection startup information, then whether failure judgement information is protection involution information, if protection involution information, then described failure message is recorded as protection involution category information; If not being protection involution information, then judge whether described failure message includes electric network fault sequence number NOF, if including electric network fault sequence number NOF, then it is the failure message at same fault circuit two ends by the failure message coupling having identical electric network fault sequence number NOF; If not comprising electric network fault sequence number NOF, then according to protection startup information and the involution information of complete correspondence, the protection of same side is started category information and protects involution category information to be recorded as same fault, and calculate fault-time according to the time of protection exit information and the record ripple of its correspondence, the failure message of both sides same fault time is recorded as the failure message of same fault;
Continuous fault handling module, for when being judged as continuous fault, the all failure messages received are sorted out: judge whether described protection startup information is start first time according to the time in described failure message, if first time starts, then described failure message is recorded as the failure message of first time fault; If not being start first time, whether the protection involution category information of the last fault of inquiry then comprises the involution information of this protection, if including the involution information of this protection, then it is judged as that last time, fault terminated, described protection startup information is recorded as the failure message of second time fault; If not including the involution information of this protection, then described protection startup information is recorded as the failure message of last fault;
Fault-time calculates module, for all protection startup information and protection involution information are recorded as complete failure sequence, and with time order and function sequence, calculates the fault-time of each fault respectively;
Matching module, for sorting the failure message of circuit both sides respectively with the time of substation, described relay protection and fault information system place respectively, and by the failure message coupling of same fault time for a fault.
5. circuit two ends according to claim 4 protection time irreversibility time fault information association system; it is characterized in that; described relay protection and fault information system is connected with intelligent electronic device, obtains failure message, protection startup information and protection involution information that described intelligent electronic device sends.
6. circuit two ends according to claim 5 protection time irreversibility time fault information association system, it is characterised in that, described intelligent electronic device is relay protection device or failure wave-recording device.
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