CN103618385B - One puies forward high-precision state estimation data correction system and method - Google Patents
One puies forward high-precision state estimation data correction system and method Download PDFInfo
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Abstract
The present invention relates to one and put forward high-precision state estimation data correction system and method, system comprises data correction system, real-time data base, dynamic surveillance system, data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, maneuvering platform and dynamic management system; The method comprising the steps of: the data structure upgrading bad data list; Upgrade bad data list; Data are searched from related information I; Be designated as x1 to information I, x2, x3, x4 also carry out judgement process; Value in bad data list is considered as measured value accurately return, carries out conventional sense and estimate; Search related information II and will wherein differentiate in result description field data in bad data list by data supplementing.Invention increases precision of state estimation, avoid the shortcoming of data failure.
Description
Technical field
The invention belongs to energy management and State Estimation field in electric power system, what be specifically related to is that one puies forward high-precision state estimation data correction system and method.
Background technology
The dispatching automation of electric power systems system of current power scheduling control centre with EMS (EMS) for technical platform.EMS comprises outside data acquisition and Monitor and Control (SCADA), state estimation (SE) function, also comprises the senior application functions such as generation schedule, automatic generation control (AGC), automatism voltage control (AVC), static security analysis (SA), Dispatcher Power Flow (DTS).Wherein state estimation is based on SCADA function, is the basis of other senior application of EMS.
State estimation is information according to network connection, network parameter and one group have redundancy analog measurement value and on-off state value, ask for the quantity of state that can describe power grid operation situation---i.e. the estimated value of the information such as electric current and power (can referred to as electric network swim solution) that flows through of busbar voltage amplitude and phase angle, circuit, and check the accuracy of real-time measurement amount.The main occurrence of state estimation is the complete and reliable real-time network slip condition database of maintenance one, for the senior application function of other EMS provides real time operation mode data (network model and state), and provides real-time network monitoring image for dispatcher.
Usually, state estimation function comprises the subfunctions such as topological analysis, electric network state detection, circuit breaker and isolating switch location identification, the identification of on-load transformer tap changer gear, error in measurement estimation and the maintenance of bus load forecast model.The electric network information being scattered in vast region is measured and transfers to power regulation center by the SCADA functional module of EMS, due to bottom sensor error, communication port noise, collect and transmit different time etc. reason, cause in real-time measurement amount and there is error and even mistake, even cause certain part in electric power system unobservable.State estimation function needs the Focal point and difficult point problem solved to be provide measurement amount from SCADA to pick out bad data, provide consistent as far as possible exactly, upgrade, reliably and the most real electric network swim solution.
In the past, because grid automation capital construction is weaker, measurement number is few and reliability is poor, has to concentrate at dispatching control center (main website end) method adopting a large amount of injection type puppet to measure, and makes electrical network meet observability condition.In recent years, along with the implementation of the automation of transformation substations, each transformer station (substation end) measurement amount redundancy increases, for reducing the communication overhead uploading measurement amount in a large number, new proposition adopts transformer station's amount of redundancy to realize the method for Part identification, namely completes the state estimation function of partial electric grid in transformer station inside, reject bad data, to supplement after pseudo-amount metrical information again by our station information transmission to regulating and controlling center background, after merging with the data from other plant stands, finally complete the state estimation of the whole network.
Said method enhances the accuracy of state estimation function, but still exist to upload data to main website process from substation produce data failure may.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and propose one and put forward high-precision state estimation data correction system and method.
The present invention solves its technical problem and takes following technical scheme to realize:
One puies forward high-precision state estimation data correction system, comprise the state estimation data correction system be connected with Ethernet, the dispatching control center be connected with Ethernet as key data input source EMS real-time data base, the dynamic surveillance system, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, the power transmission and transformation on-line monitoring system that are connected with Ethernet respectively as auxiliary data input source, produce and rush to repair maneuvering platform and the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system
Wherein, EMS real-time data base is connected with the key data input as state estimation corrective system, by described dynamic surveillance system, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, produces repairing maneuvering platform and the result database of the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system is connected with No. one to No. six auxiliary corrective data input pin of state estimation corrective system successively respectively.
And, described by EMS real-time data base for data that state estimation corrective system provides comprise the running status of all grid equipments and electric amount measurement value as the folding condition of circuit breaker, isolating switch, transformer each side three-phase voltage, electric current, active power, reactive power;
Described dynamic surveillance system comprises the electric amount measurement value that WAMS substation measuring point directly records for auxiliary corrective data that state estimation corrective system provides, as with timestamp to three-phase voltage, electric current, phase difference, active power, reactive power;
Described area power grid data acquisition and supervisor control comprise the detailed data acquisition of local distribution network and Monitor and Control data, the running status of the equipment component provided after can collecting process and electric amount measurement value, the folding condition as circuit breaker, isolating switch, transformer each side three-phase voltage, electric current, active power, reactive power for the auxiliary corrective data that state estimation corrective system provides.
Described Electric Energy Acquisition System directly records electric amount measurement value, as three-phase voltage, electric current, active power, reactive power for auxiliary corrective data that state estimation corrective system provides comprise energy metering mounting points;
Described power transmission and transformation on-line monitoring system specifies monitoring equipment Real-Time Monitoring information for auxiliary corrective data that state estimation corrective system provides comprise;
Described repairing maneuvering platform of producing closes information for auxiliary corrective data that state estimation corrective system provides comprise fault phase;
The operational management of described dispatching of power netwoks electrical secondary system and engineering dynamic management system close information for auxiliary corrective data that state estimation corrective system provides comprise fault phase.
And described state estimation corrective system interface encapsulation becomes unified web Service interface passage, physically can same set of network interface card, netting twine on time-sharing multiplex main frame, by ethernet router, be connected with other main frames on Ethernet.
A kind ofly utilize the above-mentioned method putting forward high-precision state estimation data correction system, state estimation data correction system is first by described dynamic surveillance system, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, the amount measurement data that power transmission and transformation on-line monitoring system provides for bad data check and fill up, if existence does not estimate the device data that bad data is corresponding in above-mentioned four cover systems, then from production repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system search relevant device information, and send prompting to operation maintenance personnel,
The method checking and fill up bad data from dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system comprises the steps:
(1) upgrade the data structure of bad data list, increase field;
(2) apply conventional sense method of estimation and pick out bad data from EMS real-time data base, upgrade bad data list;
(3) according to the computing node name in bad data list, utilize conventional sense method of estimation, upgrade the physical equipment title in bad data list and equipment connection point title;
(4) according to the equipment connection point title in bad data list, related information I is searched successively from the data list of dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, wherein, associated data information I comprises physical equipment name, equipment connection point title, data describe moment, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power;
(4) describe the moment according to the data in bad data list, search further from the above-mentioned related information I found and to describe moment moment nearest one group of data of being separated by with data and return in the differentiation result description field in bad data list;
(5) for the related information I found in the data list from dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, x1 is designated as respectively, x2, x3, x4,
Calculate the every equal average of three-phase voltage amplitude in every data, three-phase current amplitude, three phases active power, three phase reactive power when wherein x1-x4 at least exists 1 respectively, and be stored in the average voltage amplitude of bad data list, average current magnitude, average active power, average reactive power field;
If x1-x4 only exists 2, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, then exceed average level 10% by there is item system physical quantity deviation, the content that cannot judge further, returns in differentiation result description field;
If there are 3 or 4 in x1-x4, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, the field data that will there is item is rejected, and recalculates mean value and upgrades the data of average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power field;
(6) average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power are considered as measured value accurately, return to (1) step, carry out conventional sense and estimate, terminate to flow process;
(7) according to the physical equipment name in bad data list or equipment connection point title, from the database producing repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system, search related information II successively, associated data information II comprises physical equipment name, equipment connection point title, data describe moment, equipment state and dispatcher and order;
(8) describe the moment according to the data in bad data list, search further from the above-mentioned related information II found and to describe moment moment nearest one group of data supplementing of being separated by with data and differentiate in result description field data in bad data list;
If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 5 minutes, then will search unsuccessfully, from II class related information, do not find nearest time data of being separated by with certain moment to be appended to bad data list differentiate that, in result description field, flow process terminates;
If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 5 minutes, then field data of dispatcher in associated data information II being ordered is appended to bad data list and differentiates that in result description field data, flow process terminates.
And, the data structure of described step (1) bad data list comprises computing node name, measuring voltage amplitude, measures current amplitude, measures active power, measures reactive power, upgrade the data structure of bad data list, increase fields: physical equipment title, equipment connection point title, data describe moment, average voltage amplitude, average current magnitude, average active power, average reactive power, differentiate result explanation.
And the conventional sense method of estimation of described step (2) comprises least-squares estimation and Maximum Likelihood Estimation.
And, the concrete grammar of described step (4) is: if time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 2 minutes, then will search unsuccessfully, in the differentiation result description field not finding nearest time data of being separated by with certain moment to return in bad data list from I class related information, proceed to (7) step; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 2 minutes, then by searching from certain system in differentiation result description field that data successfully return in bad data list, proceed to (5) step.
Advantage of the present invention and good effect are
1, state estimation data correction system simple and feasible of the present invention, make full use of Utilities Electric Co. of city dispatching communication center and machine room existing resource, from different data acquisition sources, different communication channel, different application service system obtains redundant data information, change EMS (EMS) only using data acquisition and supervisor control (SCADA) way as data source, for the SCADA bad data found in state estimation procedure, automatically can correct input by auxiliary data by state estimation data correction system and obtain related data from other application service systems, and carry out judgement process, select a measuring value that correct probability is the highest, to replace corresponding SCADA bad data, thus realize the effect improving state estimation function precision,
2, the present invention had both avoided conventional sense and had estimated the shortcoming filled up the estimation that places one's entire reliance upon, lack direct measurement information to bad data, it also avoid simultaneously and filled up bad data on the spot at plant stand end but still may produce the shortcoming of data failure in remote transmission process.
Accompanying drawing explanation
Fig. 1 is state estimation data correction system connection diagram of the present invention.
Embodiment
Be further described the invention process below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
One puies forward high-precision state estimation data correction system, as shown in Figure 1, comprise the state estimation data correction system be connected with Ethernet, as Utilities Electric Co.'s dispatching control center EMS (EMS) real-time data base that key data input source is connected with Ethernet, respectively as the dynamic surveillance system that auxiliary data input source is connected with Ethernet, area power grid data acquisition and Monitor and Control (SCADA) system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, produce repairing maneuvering platform and the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system,
Wherein, EMS real-time data base is connected with the key data input as state estimation corrective system, by described dynamic surveillance system, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, produces repairing maneuvering platform and the result database of the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system is connected with No. one to No. six auxiliary corrective data input pin of state estimation corrective system successively respectively.
In specific embodiment of the invention, the described EMS real-time data base as key data input source comprises the running status of all grid equipments and electric amount measurement value as the folding condition of circuit breaker, isolating switch to the data that state estimation corrective system provides, transformer each side three-phase voltage, electric current, active power, reactive power.
In specific embodiment of the invention, described dynamic surveillance system comprises the electric amount measurement value that WAMS substation measuring point (PMU) directly records for auxiliary corrective data that state estimation corrective system provides, as with timestamp to three-phase voltage, electric current, phase difference, active power, reactive power.
In specific embodiment of the invention, described area power grid SCADA system comprises the detailed SCADA data of local distribution network for the auxiliary corrective data that state estimation corrective system provides, the running status of the equipment component provided after can collecting process and electric amount measurement value, as the folding condition of circuit breaker, isolating switch, transformer each side three-phase voltage, electric current, active power, reactive power.
In specific embodiment of the invention, described Electric Energy Acquisition System directly records electric amount measurement value, as three-phase voltage, electric current, active power, reactive power for auxiliary corrective data that state estimation corrective system provides comprise energy metering mounting points.
In specific embodiment of the invention, described power transmission and transformation on-line monitoring system specifies monitoring equipment Real-Time Monitoring information for auxiliary corrective data that state estimation corrective system provides comprise, move back as thrown or folding, Temperature Quantity measured value, insulation level estimated value.
In specific embodiment of the invention, described repairing maneuvering platform of producing closes information, as fault generation website, faulty equipment numbering, fault type, failed operation process for auxiliary corrective data that state estimation corrective system provides comprise fault phase.
In specific embodiment of the invention, the operational management of described dispatching of power netwoks electrical secondary system and engineering dynamic management system close information, as fault generation website, faulty equipment numbering, fault type, failed operation process for auxiliary corrective data that state estimation corrective system provides comprise fault phase.
In specific embodiment of the invention, described state estimation corrective system interface encapsulation becomes unified web Service interface passage, physically can same set of network interface card, netting twine on time-sharing multiplex main frame, pass through ethernet router, be connected with other main frames on Ethernet, to realize mass data long-time stable transmitting.
In specific embodiment of the invention, the amount measurement data that first state estimation corrective system should utilize described dynamic surveillance system, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system to provide for bad data check and fill up, if existence does not estimate the device data that bad data is corresponding in above-mentioned three cover systems, then from production repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system search relevant device information, and send prompting to operation maintenance personnel.
The method checking and fill up bad data from dynamic surveillance, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system comprises the steps:
(1) upgrade the data structure of bad data list, increase field; The data structure of conventional bad data list comprises: computing node name, measuring voltage amplitude, measurement current amplitude, measurement active power, measurement reactive power, upgrade the data structure of bad data list, increase fields: physical equipment title, equipment connection point title, data describe moment, average voltage amplitude, average current magnitude, average active power, average reactive power, differentiate result explanation;
(2) apply conventional sense method of estimation and pick out bad data from as the EMS real-time data base of key data input source, upgrade bad data list; Wherein conventional sense method of estimation comprises least-squares estimation, Maximum Likelihood Estimation;
(3) according to the computing node name in bad data list, utilize conventional sense method of estimation, upgrade the physical equipment title in bad data list and equipment connection point title;
(4) according to the equipment connection point title in bad data list, from the data list of dynamic surveillance, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, related information I is searched successively; Wherein, associated data information I comprises physical equipment name, equipment connection point title, data describe moment, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power;
(4) describe the moment according to the data in bad data list, search further from the above-mentioned related information I found and to describe moment moment nearest one group of data of being separated by with data and return in the differentiation result description field in bad data list; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 2 minutes, then will search unsuccessfully, in the differentiation result description field not finding nearest time data of being separated by with certain moment (concrete moment value) to return in bad data list from I class related information, proceed to (7) step; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 2 minutes, then will search from certain system (concrete title) in the differentiation result description field that data successfully return in bad data list, proceed to (5) step;
(5) for the related information I found in the data list from dynamic surveillance, area power grid SCADA system, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, be designated as x1 respectively, x2, x3, x4, calculate the every equal average of three-phase voltage amplitude in every data, three-phase current amplitude, three phases active power, three phase reactive power respectively, and be stored in the average voltage amplitude of bad data list, average current magnitude, average active power, average reactive power field; Wherein x1-x4 at least exists 1;
If x1-x4 only exists 2, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, then certain 2 certain phase of system (being determined by x1-x4) (specifically separate) physical quantity (voltage, electric current, active power, reactive power) deviation is exceeded average level 10%, the content that cannot judge further, returns in differentiation result description field;
If there are 3 or 4 in x1-x4, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, this this field data is rejected, recalculates mean value and upgrade the data of average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power field;
(6) average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power are considered as measured value accurately, return to (1) step, carry out conventional sense and estimate, terminate to flow process;
(7) according to the physical equipment name in bad data list or equipment connection point title, from the database producing repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system, search related information II successively, associated data information II comprises physical equipment name, equipment connection point title, data describe moment, equipment state and dispatcher and order;
(8) describe the moment according to the data in bad data list, search further from the above-mentioned related information II found and to describe moment moment nearest one group of data supplementing of being separated by with data and differentiate in result description field data in bad data list; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 5 minutes, then will search unsuccessfully, from II class related information, do not find nearest time data of being separated by with certain moment (concrete moment value) to be appended to bad data list differentiate that, in result description field, flow process terminates; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 5 minutes, then field data of dispatcher in associated data information II being ordered is appended to bad data list and differentiates that in result description field data, flow process terminates.
Claims (5)
1. put forward high-precision state estimation data correction system for one kind, it is characterized in that comprising the state estimation data correction system be connected with Ethernet, the dispatching control center be connected with Ethernet as key data input source EMS real-time data base, the dynamic surveillance system, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, the power transmission and transformation on-line monitoring system that are connected with Ethernet respectively as auxiliary data input source, produce and rush to repair maneuvering platform and the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system
Wherein, EMS real-time data base is connected with the key data input as state estimation data correction system, by described dynamic surveillance system, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, produces the result database rushing to repair maneuvering platform and the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system and be connected with No. one to No. six auxiliary corrective data input pin of state estimation data correction system respectively successively;
And, described by EMS real-time data base for data that state estimation data correction system provides comprise running status and the electric amount measurement value of all grid equipments, specifically comprise the folding condition of circuit breaker, isolating switch, transformer each side three-phase voltage, electric current, active power, reactive power;
Described dynamic surveillance system comprises for auxiliary corrective data that state estimation corrective system provides the electric amount measurement value that WAMS substation measuring point directly records, and specifically comprises with timestamp to three-phase voltage, electric current, phase difference, active power, reactive power;
Described area power grid data acquisition and supervisor control comprise the detailed data acquisition of local distribution network and Monitor and Control data for the auxiliary corrective data that state estimation data correction system provides, the running status of the equipment component provided after collecting process and electric amount measurement value, specifically comprise circuit breaker, the folding condition of isolating switch, transformer each side three-phase voltage, electric current, active power, reactive power.
Described Electric Energy Acquisition System directly records electric amount measurement value for auxiliary corrective data that state estimation data correction system provides comprise energy metering mounting points, specifically comprises three-phase voltage, electric current, active power, reactive power;
Described power transmission and transformation on-line monitoring system specifies monitoring equipment Real-Time Monitoring information for auxiliary corrective data that state estimation data correction system provides comprise;
Described repairing maneuvering platform of producing closes information for auxiliary corrective data that state estimation data correction system provides comprise fault phase;
The operational management of described dispatching of power netwoks electrical secondary system and engineering dynamic management system close information for auxiliary corrective data that state estimation data correction system provides comprise fault phase;
And described state estimation corrective system interface encapsulation becomes unified web Service interface passage, same set of network interface card, netting twine physically on time-sharing multiplex main frame, by ethernet router, be connected with other main frames on Ethernet.
2. one kind utilizes the method putting forward high-precision state estimation data correction system of the claims 1, it is characterized in that: state estimation data correction system is first by dynamic surveillance system, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, the amount measurement data that power transmission and transformation on-line monitoring system provides for bad data check and fill up, if existence does not estimate the device data that bad data is corresponding in above-mentioned four cover systems, then from production repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system search relevant device information, and send prompting to operation maintenance personnel,
The method checking and fill up bad data from dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system comprises the steps:
(1) upgrade the data structure of bad data list, increase field;
(2) apply conventional sense method of estimation and pick out bad data from EMS real-time data base, upgrade bad data list;
(3) according to the computing node name in bad data list, utilize conventional sense method of estimation, upgrade the physical equipment title in bad data list and equipment connection point title;
(4) according to the equipment connection point title in bad data list, associated data information I is searched successively from the data list of dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, wherein, associated data information I comprises physical equipment name, equipment connection point title, data describe moment, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power;
(4) describe the moment according to the data in bad data list, search further from the above-mentioned associated data information I found and to describe moment moment nearest one group of data of being separated by with data and return in the differentiation result description field in bad data list;
(5) for the associated data information I found in the data list from dynamic surveillance, area power grid data acquisition and supervisor control, Electric Energy Acquisition System, power transmission and transformation on-line monitoring system, x1 is designated as respectively, x2, x3, x4,
Calculate the every equal average of three-phase voltage amplitude in every data, three-phase current amplitude, three phases active power, three phase reactive power when wherein x1-x4 at least exists 1 respectively, and be stored in the average voltage amplitude of bad data list, average current magnitude, average active power, average reactive power field;
If x1-x4 only exists 2, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, then exceed average level 10% by there is item system physical quantity deviation, the content that cannot judge further, returns in differentiation result description field;
If there are 3 or 4 in x1-x4, in judging every, three-phase voltage amplitude, three-phase current amplitude, three phases active power, three phase reactive power are compared with every equal average, the whether situation of existence more than 10%, if exist, the field data that will there is item is rejected, and recalculates mean value and upgrades the data of average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power field;
(6) average voltage amplitude in bad data list, average current magnitude, average active power, average reactive power are considered as measured value accurately, return to (1) step, carry out conventional sense and estimate, terminate to flow process;
(7) according to the physical equipment name in bad data list or equipment connection point title, from the database producing repairing maneuvering platform, the operational management of dispatching of power netwoks electrical secondary system and engineering dynamic management system, search associated data information II successively, associated data information II comprises physical equipment name, equipment connection point title, data describe moment, equipment state and dispatcher and order;
(8) describe the moment according to the data in bad data list, search further from the above-mentioned associated data information II found and to describe moment moment nearest one group of data supplementing of being separated by with data and differentiate in result description field data in bad data list;
If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 5 minutes, then will search unsuccessfully, from II class related information, do not find nearest time data of being separated by with certain moment to be appended to bad data list differentiate that, in result description field, flow process terminates;
If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 5 minutes, then field data of dispatcher in associated data information II being ordered is appended to bad data list and differentiates that in result description field data, flow process terminates.
3. the method for high-precision state estimation data correction system is put forward in utilization according to claim 2, it is characterized in that: the data structure of described step (1) bad data list comprises computing node name, measuring voltage amplitude, measures current amplitude, measures active power, measures reactive power, upgrade the data structure of bad data list, increase fields: physical equipment title, equipment connection point title, data describe moment, average voltage amplitude, average current magnitude, average active power, average reactive power, differentiate result explanation.
4. the method for high-precision state estimation data correction system is put forward in utilization according to claim 2, it is characterized in that: the conventional sense method of estimation of described step (2) comprises least-squares estimation and Maximum Likelihood Estimation.
5. the method for high-precision state estimation data correction system is put forward in utilization according to claim 2, it is characterized in that: the concrete grammar of described step (4) is: if time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and differ by more than 2 minutes, then will search unsuccessfully, in the differentiation result description field not finding nearest time data of being separated by with certain moment to return in bad data list from I class related information, proceed to (7) step; If time the data engraved in one group of data and bad data list of being separated by nearest describe the moment and be no more than 2 minutes, then by searching from certain system in differentiation result description field that data successfully return in bad data list, proceed to (5) step.
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