CN103852744A - Distributed online monitoring system and method for electric energy metering device - Google Patents
Distributed online monitoring system and method for electric energy metering device Download PDFInfo
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- CN103852744A CN103852744A CN201410087519.8A CN201410087519A CN103852744A CN 103852744 A CN103852744 A CN 103852744A CN 201410087519 A CN201410087519 A CN 201410087519A CN 103852744 A CN103852744 A CN 103852744A
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Abstract
The invention relates to a distributed online monitoring system and method for an electric energy metering device. The distributed online monitoring system for the electric energy metering device at least comprises a monitoring subsystem (4) for the electric energy metering device in a transformer substation, a customer electric energy meter centralized reading motoring subsystem (9), a monitoring unit (10) for the electric energy metering device in a metering point and a monitoring center (7) for the electric energy metering device in a power supply company. Data abnormality and fault early-warning, error alarming and inspection and verification request judgment are performed through an on-site monitoring device; relevant power grid event information is acquired through a master monitoring station (6) for the electric energy metering device in the transformer substation and the monitoring center (7) for the electric energy metering device in the power supply company to be used for assisting in decision making; finally, the decision is made through business personnel. The traditional regular inspection and verification mode is broken, and the inspection, verification or maintenance efficiency is high. The communication burden on a monitoring network is reduced, the requirements for a communication environment are lowered, data amount of the master monitoring station (6) for the electric energy metering device in the transformer substation and the monitoring center (7) for the electric energy metering device in the power supply company is reduced, and the operation efficiency is higher.
Description
One, technical field
The present invention relates to a kind of Monitor System for Electric Energy Metering Device and method thereof, belong to Electric Energy Metering Technology field.
Two, background technology
Electric power meter mainly comprises voltage transformer (VT) (PT), current transformer (CT), secondary circuit cable and electric energy meter.These devices all have error, there will be all kinds of faults, as there is the disconnected and zero line break of turn-to-turn short circuit, high voltage fuse etc. in mutual inductor, occur secondary circuit CT loop multiple grounding, secondary circuit cable open circuit and insulation fault etc., and electric energy meter occurs that error is overproof, hardware fault, working power dead electricity, clock are overproof, battery failures etc.; Also have in addition the faults such as overcurrent, shunting or decompression that the human factors such as stealing or misoperation cause.Traditional way to manage is regular visit and field-checking, carries out electric weight after sending out electric energy metrical mistake a little to move back benefit.This way to manage real-time is poor, is difficult to pinpoint the problems in time, easily causes electric quantity compensating dispute; Be difficult to find for the artificial origin such as transgression for using electricity or stealing in addition.
Along with the quickening of China's electrical network intelligent construction process, there is various electric energy metrical Cost Statistic Automatically devices or system, greatly improve accuracy, real-time and the reliability of electric energy tariffing, reduce electric quantity compensating dispute.As a kind of three-phase electric energy long-distance metering device that application number is 201220341161.3, comprise field electric energy measurement terminal, communication unit and data, services applicator platform, can realize round-the-clock Unattended remote metering; Also has the electric energy intelligent measuring system under the Internet of Things framework that application number is 201210011062.3, be divided into perception interdynamic layer, transport network layer and application service layer from bottom to top, described perception interdynamic layer is connected to the main website of application service layer by transport network layer, can realize automatic gauge charging, can also complete the decision-making functions such as load prediction, line loss analyzing, fault detect, improve management of power use level.For guaranteeing electric energy metered system reliability service, also multiple electric power meter on-line real time monitoring device or system have been there is, a kind of Watthour meter remote monitoring diagnosis system that for example application number is 201220559634.7, comprise power information acquisition system, the communication server, data collection analysis server, traffic information services device and data bus etc., realize data acquisition, call and analyzing and processing, can carry out fault alarm and remedy electric weight and calculate, improve the promptness of electric power meter fault discovery, and the monitoring of electric power meter and management level.
These systems or device all utilize the data collector that is installed on stoichiometric point, send data to the main website that is positioned at Surveillance center; Data collector does not carry out data analysis and process, directly uploads through communication network.Data volume is large, easily causes traffic congestion, interruption or loss of data.In addition, China's electrical network presents intelligent and large data development trend, and the various devices or the device intelligence that are installed on stoichiometric point improve, and quantity increases, and uploading data amount increases severely.The technology such as mass data processing and intelligent aid decision making is for the monitoring of main website, but real-time is often difficult to meet in real network communications environment.The present invention on this basis, proposes a kind of electric power meter distributed on line monitoring system and method thereof.
Three, summary of the invention
The object of the present invention is to provide a kind of electric power meter distributed on line monitoring system and method thereof, the way to manage such as regular visit and verification breaking traditions, realizes the real time on-line monitoring of electric power meter; Reduce the communications burden of whole monitoring network and the data volume of Surveillance center; Improve intelligent, accuracy, real-time and the reliability of electric energy metrical charging.
Electric power meter distributed on line monitoring system at least comprises transformer station's electric power meter monitoring subsystem 4, collects and copy client's electric energy meter monitoring subsystem 9, stoichiometric point electric power meter monitoring means 10 and electric power meter monitoring center of electric company 7, as shown in Figure 1.Described transformer station electric power meter monitoring subsystem 4 is installed on the transformer station of Attended mode, comprises transformer station's electric power meter monitoring means 3 and electric power meter monitoring main website 6 of transformer station; Described transformer station electric power meter monitoring means 3 and stoichiometric point electric power meter monitoring means 10 all comprise PT monitoring device 1, CT monitoring device 2 and electric energy meter monitoring device 5.Described collection is copied client's electric energy meter monitoring subsystem 9 and is comprised that at least one collection copies client's electric energy meter monitoring device 8.Described stoichiometric point electric power meter monitoring means 10 is identical with transformer station electric power meter monitoring means 3 26S Proteasome Structure and Functions, is installed on unattended operation transformer station, generating plant, big customer's stoichiometric point and distribute-electricity transformer district stoichiometric point.
Decision Support Software is installed by electric power meter monitoring center of described electric company 7, at least copy client's electric energy meter monitoring subsystem 9 and 10 wired or wireless connections of stoichiometric point electric power meter monitoring means with transformer station electric power meter monitoring subsystem 4, collection, receive data exception, fault pre-alarming, error warning, tour and check request information; With relevant information system interfaces such as electric power dispatching system, Electric Power Marketing System, power production management system and electric power Geographic Information System, obtain relevant grid event information, aid decision making, generate tour, verification or maintenance instruction, and send decision rule and algorithm parameter setting and modify instruction and other parameter settings and modify instruction, to time instruction, sample frequency instruction and other instructions are set.Described wired or wireless connection refers to that media such as adopting optical fiber, concentric cable or twisted-pair feeder carries out wired connection or adopts WCDMA, GPRS, ZigBee or other wireless communication technologys to carry out wireless connections.
Transformer station's electric power meter monitoring software is installed by described transformer station electric power meter monitoring main website 6, with multiple transformer stations 3 wired or wireless connections of electric power meter monitoring means, and with 7 wired or wireless connections of electric power meter monitoring center of electric company; Receive data exception, fault pre-alarming, error warning, tour and check request information that transformer station's electric power meter monitoring means 3 is uploaded, and forward to electric power meter monitoring center of electric company 7; Receive decision rule that electric company electric power meter monitoring center 7 sends and algorithm parameter setting and modify instruction and other parameter settings and modify instruction, to time instruction, sample frequency instruction and other instructions are set, and forward to transformer station's electric power meter monitoring means 3; With infosystem interfaces such as monitoring system of electric substation and transformer station's integrated information systems, obtain relevant information, aid decision making, carries out transformer station's electric power meter monitoring.
Described transformer station electric power meter monitoring means 3 monitors by electric energy meter monitoring device 5 and described transformer station electric power meter that main website 6 is wired or wireless to be connected; Also in the situation that must having with wired or wireless connection of electric energy meter monitoring device 5 of other transformer station's electric power meter monitoring means 3, or with 10 wired or wireless connections of stoichiometric point electric power meter monitoring means, carry out electric energy measurement data verification.
Described PT monitoring device 1, CT monitoring device 2, electric energy meter monitoring device 5 and collection are copied client's electric energy meter monitoring device 8 and are all installed on monitoring field, are called local supervising and measuring equipment.The modular structure of described local supervising and measuring equipment is identical, at least comprises signal sampling module, A/D modular converter, microprocessor, storer, serial communication modular, wireless communication module, display module and power module, as shown in Figure 2.Described signal sampling module is connected with monitored electric power meter, at least obtains electric current and voltage signal, and carries out filtering and amplification.Described A/D modular converter is connected with signal sampling module, accept filter and amplify after electric current and voltage signal, carry out A/D conversion, then send into microprocessor.The memory capacity of described storer for expanding microprocessor, power down is obliterated data not.Described serial communication modular comprises at least one road serial communication interface, for relevant apparatus wired connection, transmit and receive data.Described microprocessor is installed watchdog routine, carry out error calculating, error warning decision-making, data exception decision-making, fault pre-alarming decision-making, tour and check request decision-making according to corresponding decision rule and algorithm, also carry out task scheduling, to time, decision rule and algorithm parameter setting and amendment etc.
The signal sampling module of described PT monitoring device 1 is connected with monitored PT with voltage sensor by current sensor respectively, at least obtains electric current and the voltage signal of PT secondary circuit, the running status of monitoring PT.The signal sampling module of described CT monitoring device 2 is connected with monitored CT with voltage sensor by current sensor respectively, at least obtains electric current and the voltage signal of CT secondary circuit, the running status of monitoring CT.Described PT monitoring device 1 is connected with electric energy meter monitoring device 5 by serial communication modular or wireless communication module with CT monitoring device 2, transmits and receive data.
The signal sampling module of described electric energy meter monitoring device 5 is connected with the input terminal of monitored electric energy meter, obtains electric current and voltage signal.The serial communication modular of described electric energy meter monitoring device 5 comprises at least five road serial communication interfaces, can be connected with the serial communication modular of PT monitoring device 1, CT monitoring device 2 or other electric energy meter monitoring devices 5, also can be connected with monitored electric energy meter, electric power meter monitoring main website 6 of transformer station or electric power meter monitoring center of electric company 7, carry out digital received and sent.The wireless communication module of described electric energy meter monitoring device 5 can be connected with the wireless communication module of PT monitoring device 1, CT monitoring device 2 or other electric energy meter monitoring devices 5, also can monitor main website 6 or 7 wireless connections of electric power meter monitoring center of electric company with transformer station's electric power meter, carry out digital received and sent.Described electric energy meter monitoring device 5 sends the information such as error warning, data exception, fault pre-alarming, tour and check request, the information such as error warning, data exception, fault pre-alarming, tour and the check request that forwarding PT monitoring device 1 and CT monitoring device 2 are uploaded to electric power meter monitoring main website 6 of transformer station or electric power meter monitoring center of electric company 7; And receive decision rule and algorithm parameter, to time instruction and other instruction is set, the running status of monitoring electric energy meter.
Described collection is copied client's electric energy meter monitoring device 8 and is copied the monitoring of client's electric energy meter for collection, identical with the 26S Proteasome Structure and Function of electric energy meter monitoring device 5, can be regarded as the electric energy meter monitoring device 5 of copying the monitoring of client's electric energy meter for collecting.Described collection is copied client's electric energy meter monitoring device 8 and is connected with acquisition terminal or the concentrator of Automatic meter reading system by serial communication modular or wireless communication module, obtains electric weight, electric current and the information of voltage of electric energy meter; Collection copies client's electric energy meter monitoring device 8 by serial communication modular or wireless communication module copies client's electric energy meter monitoring device 8 with other collection or stoichiometric point electric power meter monitoring means 10 is connected, and obtains its electric quantity data, carries out electric quantity data verification.
Described stoichiometric point electric power meter monitoring means 10 is connected with electric power meter monitoring center of electric company 7 by serial communication modular or wireless communication module, carry out digital received and sent, also can copy client's electric energy meter monitoring device 8 with other stoichiometric point electric power meter monitoring means 10, transformer station's electric power meter monitoring means 3 or collection by serial communication modular or wireless communication module is connected, obtain its electric quantity data, carry out electric quantity data verification.
Electric power meter distributed on line monitoring method of the present invention, based on described electric power meter distributed on line monitoring system, comprises the following steps:
The first step: PT monitoring device 1 and CT monitoring device 2 at least receive electric current and the voltage data of monitored PT and CT secondary circuit, obtains data exception, fault pre-alarming, error warning, tour and check request information according to corresponding decision rule and algorithm;
Second step: electric energy meter monitoring device 5 receives electric current, voltage and the electric quantity data of monitored electric energy meter; Receive the relevant information of other electric energy meter monitoring devices 5, PT monitoring device 1 and CT monitoring device 2; Obtain data exception, fault pre-alarming, error warning, tour and check request information according to corresponding decision rule and algorithm;
The 3rd step: electric energy meter monitoring device 5 sends to electric power meter monitoring main website 6 of transformer station or electric power meter monitoring center of electric company 7, and forwards data exception, fault pre-alarming, error warning, tour and the check request information from PT monitoring device 1 and CT monitoring device 2;
The 4th step: electric power meter monitoring main website 6 of transformer station and electric power meter monitoring center of electric company 7 receive data exception, fault pre-alarming, error warning, tour and check request information; With relevant information system interface, obtain relevant grid event information, aid decision making;
The 5th step: business personnel is according to decision-making assistant information, determines whether make an inspection tour, verification or maintenance, and according to grid event and decision-making experience, decision rule and the algorithm parameter of amendment local supervising and measuring equipment.
Described decision rule and algorithm comprise data exception, fault pre-alarming, error warning, tour and check request decision rule and algorithm, at least for judge electric current, voltage and electric quantity data whether extremely, whether carry out fault pre-alarming, whether carry out error warning, whether send make an inspection tour and check request.
The invention has the beneficial effects as follows: adopt the local supervising and measuring equipment that is installed on monitoring field to carry out data exception, fault pre-alarming, error warning and tour and check request judgement; Obtain relevant grid event information, aid decision making by electric power meter monitoring main website 6 of transformer station and electric power meter monitoring center of electric company 7 again; Finally by business personnel determine whether make an inspection tour, verification or maintenance.Broken traditional regular visit and verification mode, provide whether make an inspection tour, the decision-making foundation of verification or maintenance, decision-making process science, has reduced risk of policy making, has improved the probability of correct decisions; Make tour, verification or overhaul with clearly defined objective, be beneficial to improve its work efficiency.Local supervising and measuring equipment of the present invention is abnormal, the fault pre-alarming of uploading data, error warning, tour and check request information only, realize the distributed real time on-line monitoring of electric power meter, reduce the communications burden of whole monitoring network and the requirement to communication environment, avoided the loss of data or the risk of errors that cause due to traffic congestion.The present invention has reduced the data volume of electric power meter monitoring main website 6 of transformer station and electric power meter monitoring center of electric company 7, under electrical network intellectuality at present and large data development trend, avoided the excessive demand to server software and hardware, operational efficiency is higher.The present invention has improved intelligent, accuracy, real-time and the reliability of the management level of electric power meter and electric energy metrical charging.
Four, brief description of the drawings
Fig. 1 is electric power meter distributed on line monitoring system composition schematic diagram;
Fig. 2 is the modular structure schematic diagram of local supervising and measuring equipment.
In figure, 1 is PT monitoring device; 2 is CT monitoring device; 3 is transformer station's electric power meter monitoring means; 4 is transformer station's electric power meter monitoring subsystem; 5 is electric energy meter monitoring device; 6 is electric power meter monitoring main website of transformer station; 7 is electric power meter monitoring center of electric company; 8 copy client's electric energy meter monitoring device for collecting; 9 copy client's electric energy meter monitoring subsystem for collecting; 10 is stoichiometric point electric power meter monitoring means.
Five, embodiment
Below in conjunction with accompanying drawing and concrete embodiment, technical scheme of the present invention is described in detail.
Fig. 1 is electric power meter distributed on line monitoring system composition schematic diagram, comprise transformer station's electric power meter monitoring subsystem 4, collect and copy client's electric energy meter monitoring subsystem 9, stoichiometric point electric power meter monitoring means 10 and electric power meter monitoring center of electric company 7, as shown in Figure 1.Described transformer station electric power meter monitoring subsystem 4 is installed on the transformer station of Attended mode, comprises transformer station's electric power meter monitoring means 3 and electric power meter monitoring main website 6 of transformer station; Described transformer station electric power meter monitoring means 3 and stoichiometric point electric power meter monitoring means 10 all comprise PT monitoring device 1, CT monitoring device 2 and electric energy meter monitoring device 5.Described collection is copied client's electric energy meter monitoring subsystem 9 and is comprised that at least one collection copies client's electric energy meter monitoring device 8.PT monitoring device 1, CT monitoring device 2, electric energy meter monitoring device 5 and collection are copied client's electric energy meter monitoring device 8 and are all installed on monitoring field, are called local supervising and measuring equipment.
Electric power meter monitoring center 7 of described electric company is as the core of whole system, Decision Support Software is installed, receive data exception, fault pre-alarming, error warning, tour and the check request information of multiple local supervising and measuring equipments, and send decision rule and algorithm parameter setting and modify instruction and other parameter settings and modify instruction, to time instruction, sample frequency instruction and other instructions are set.The exploitation of described Decision Support Software is based on known commercial data base management system and operating system, the mixed developing pattern that adopts B/S and C/S to combine, preferably the WEB development technique of SUN company.The interface of the relevant information systems such as described Decision Support Software and electric power dispatching system, Electric Power Marketing System, power production management system and electric power Geographic Information System, based on Java Bean form, adopts known technology to realize; According to the Characteristics of Geographical Distribution of electrical network, carry out space and topological analysis by electric power geographical information system interface, analyze the correlativity that grid event and electric power meter data exception, fault pre-alarming and error are reported to the police, adopt known artificial intelligence and decision support technique to set up electric power meter fault decision model.
Transformer station's electric power meter monitoring software is installed by electric power meter monitoring main website 6 of described transformer station, receive data exception, fault pre-alarming, error warning, tour and check request information that multiple local supervising and measuring equipments send, and forward to electric power meter monitoring center of electric company 7.Described transformer station electric power meter monitoring software and monitoring system of electric substation and transformer station's integrated information system interface, aid decision making, carries out transformer station's electric power meter monitoring.Described transformer station electric power meter monitoring software runs on known computing machine, preferably industrial control computer; Its development technique is identical with the Decision Support Software that is arranged on electric power meter monitoring center of electric company 7.
The modular structure that described PT monitoring device 1, CT monitoring device 2, electric energy meter monitoring device 5 and collection are copied the local supervising and measuring equipments such as client's electric energy meter monitoring device 8 is identical, comprise signal sampling module, A/D modular converter, microprocessor, storer, serial communication modular, wireless communication module, display module and power module, as shown in Figure 2.Described signal sampling module is at least for gathering the simulating signal such as electric current and voltage, signal sampling module for PT monitoring device 1 or CT monitoring device 2 is connected with monitored PT or CT with voltage sensor by current sensor respectively, obtains electric current and the voltage signal of its secondary circuit.The centre path current sensor of described current sensor preferred high accuracy; The isolated voltage sensor of described voltage sensor preferred high accuracy.Described signal sampling module comprises signal filter circuit and amplifying circuit, adopts known technology to realize.The preferred known digital signal processing of described microprocessor (DSP) chip; The preferred FLASH chip of described storer.Described A/D modular converter, serial communication modular, wireless communication module, display module and power module all adopt the module of selling on Vehicles Collected from Market to realize.
Described microprocessor is installed watchdog routine, described watchdog routine comprises basic function function and framing program, basic function function has called error calculating, error warning decision-making, data exception decision-making, fault pre-alarming decision-making, tour and check request decision-making by framing program, also carry out task scheduling, to time, decision rule and algorithm parameter setting and amendment etc.
Described decision rule and algorithm comprise data exception, fault pre-alarming, error warning, tour and check request decision rule and algorithm.Described data exception decision rule and algorithm are to present periodic time cycle Δ t, maximal value v according to monitored data
max, minimum value v
minwith monitor value v, adopting the known algorithms such as the method for moving average, exponential smoothing or linear regression method to obtain its predicted value v ' in the individual Δ t of n (n is the parameter of setting) recently, according to formula p
v=| v-v ' | ÷ (v
max-v
min) calculate the abnormality degree p of v
v; If p
v> p
e(p
efor the abnormality degree threshold values of setting) or v > v
maxor v < v
min, judge that v is abnormal.
Described fault pre-alarming decision rule and algorithm are used for according to electric current I
twith magnitude of voltage V
t, and lasting time t, the contingent fault of prediction monitored target.For example: if certain phase I
t< α I
e, V
t< β V
e, t > T
e(I
efor rated current, V
efor rated voltage, α, β and T
eit is all predetermined parameter; α preferably 0.005, β preferably 0.6, T
epreferably 50s), and other are mutually normal, for electric energy meter monitoring device 5 and PT monitoring device 1, open phase fault may occur; For CT monitoring device 2, may there is high voltage fuse disconnected.
Described error warning decision rule and algorithm, according to electric current and the voltage data of its calibrating data, correlation test data, monitoring for PT monitoring device 1 and CT monitoring device 2, adopt known computing formula to obtain its combination misalignment, report to the police if its combination misalignment exceedes predetermined threshold values; Be that the electric weight of monitored master meter and subtabulation is contrasted for electric energy meter monitoring device 5, report to the police if relative error exceedes predetermined threshold values.
Described tour and check request decision rule and algorithm refer to judge whether to send according to various data exceptions, fault pre-alarming and error warning frequency and make an inspection tour and check request, even data exception, fault pre-alarming and error warning frequency exceed predetermined threshold values, send and make an inspection tour and check request.
Claims (5)
1. electric power meter distributed on line monitoring system at least comprises transformer station's electric power meter monitoring subsystem (4), collects and copy client's electric energy meter monitoring subsystem (9), stoichiometric point electric power meter monitoring means (10) and electric power meter monitoring center of electric company (7), it is characterized in that described transformer station's electric power meter monitoring subsystem (4) is installed on the transformer station of Attended mode, comprise transformer station's electric power meter monitoring means (3) and electric power meter monitoring main website of transformer station (6); Described transformer station's electric power meter monitoring means (3) and stoichiometric point electric power meter monitoring means (10) all comprise PT monitoring device (1), CT monitoring device (2) and electric energy meter monitoring device (5); Described collection is copied client's electric energy meter monitoring subsystem (9) and is comprised that at least one collection copies client's electric energy meter monitoring device (8); Described stoichiometric point electric power meter monitoring means (10) is installed on unattended operation transformer station, generating plant, big customer's stoichiometric point and distribute-electricity transformer district stoichiometric point.
2. according to electric power meter distributed on line monitoring system claimed in claim 1, it is characterized in that electric power meter monitoring center of described electric company (7) at least with transformer station's electric power meter monitoring subsystem (4), collection is copied client's electric energy meter monitoring subsystem (9) and stoichiometric point electric power meter monitoring means (10) is connected, and receives data exception, fault pre-alarming, error warning, tour and check request information; Aid decision making, generates tour, verification or maintenance instruction; At least send decision rule and algorithm parameter setting and modify instruction.
3. according to electric power meter distributed on line monitoring system claimed in claim 1, it is characterized in that described PT monitoring device (1), CT monitoring device (2), electric energy meter monitoring device (5) and collection copy client's electric energy meter monitoring device (8) and be all installed on monitoring field, at least comprise signal sampling module, A/D modular converter, microprocessor, storer, serial communication modular, wireless communication module, display module and power module.
4. according to the electric power meter distributed on line monitoring system described in claim 1 or 3, the signal sampling module that it is characterized in that described PT monitoring device (1) is connected with monitored PT, the signal sampling module of described CT monitoring device (2) is connected with monitored CT, the signal sampling module of described electric energy meter monitoring device (5) is connected with the input terminal of monitored electric energy meter, and described collection is copied client's electric energy meter monitoring device (8) and is connected with acquisition terminal or the concentrator of Automatic meter reading system.
5. electric power meter distributed on line monitoring method, based on electric power meter distributed on line monitoring system claimed in claim 1, is characterized in that comprising the following steps:
The first step: PT monitoring device (1) and CT monitoring device (2) at least receive electric current and the voltage data of monitored PT and CT secondary circuit, obtains data exception, fault pre-alarming, error warning, tour and check request information according to corresponding decision rule and algorithm;
Second step: electric energy meter monitoring device (5) receives electric current, voltage and the electric quantity data of monitored electric energy meter; Receive the relevant information of other electric energy meter monitoring devices (5), PT monitoring device (1) and CT monitoring device (2); Obtain data exception, fault pre-alarming, error warning, tour and check request information according to corresponding decision rule and algorithm;
The 3rd step: electric energy meter monitoring device (5) sends to electric power meter monitoring main website of transformer station (6) or electric power meter monitoring center of electric company (7), and forward data exception, fault pre-alarming, error warning, tour and the check request information from PT monitoring device (1) and CT monitoring device (2);
The 4th step: electric power meter monitoring main website of transformer station (6) and electric power meter monitoring center of electric company (7) receive data exception, fault pre-alarming, error warning, tour and check request information; With relevant information system interface, obtain relevant grid event information, aid decision making;
The 5th step: business personnel is according to decision-making assistant information, determines whether make an inspection tour, verification or maintenance, and revises decision rule and the algorithm parameter of local supervising and measuring equipment.
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