CN202210151U - System for remote checking and monitoring for electric energy metering device - Google Patents

System for remote checking and monitoring for electric energy metering device Download PDF

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Publication number
CN202210151U
CN202210151U CN2011203534248U CN201120353424U CN202210151U CN 202210151 U CN202210151 U CN 202210151U CN 2011203534248 U CN2011203534248 U CN 2011203534248U CN 201120353424 U CN201120353424 U CN 201120353424U CN 202210151 U CN202210151 U CN 202210151U
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China
Prior art keywords
monitoring
error
electric energy
industrial computer
long
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Expired - Lifetime
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CN2011203534248U
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Chinese (zh)
Inventor
张亮
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State Grid Corp of China SGCC
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SICHUAN ELECTRIC POWER CO Ltd GUANGAN ELECTRIC POWER BUREAU
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Abstract

The utility model discloses a system for remote checking and monitoring for an electric energy metering device, which includes field monitoring equipment and an administration center, wherein an industrial computer is arranged between the field monitoring equipment and the administration center; and the industrial computer is connected with the field monitoring equipment and the administration center respectively. The system for remote checking and monitoring is a remote detecting system for a metering device, and integrates signal and data collection and treatment, database management, field real-time checking, monitoring, alarming and communication, solves the problems that the conventional metering device in a substation and a power plant can not effectively test error of an electric energy meter and the working condition of a secondary loop of the electric energy meter in a real-time manner, meanwhile is convenient for modernized management, saves cost and time for field meter calibration, can timely discover the failure of a metering device, fully utilizes the present-day advanced communication technology resource, greatly reduces the labor intensity, improves the working efficiency, and guarantees the metering to be fair, just and accurate.

Description

The error of electric power meter is carried out the system of long-range verification and monitoring
Technical field
The utility model relates to the system of a kind of long-range verification and detection, especially relates to a kind of system that the error of electric power meter is carried out long-range verification and monitoring, belongs to the electric energy field.
Background technology
Electric energy metrical is the important component part of power department economic work, and it is instructing safety in production and operation control, for electrical production provides technical guarantee.Simultaneously, science, accurate, reliable metering are again the important evidence of organization of production, operation control and managerial decision.At present each Utilities Electric Co. mainly makes regular check on the detection means of scene operation WT-MSR, so just causes the sense cycle of WT-MSR longly, and the detection means backwardness can't be monitored operating WT-MSR in real time.Along with electric power development, power consumption increases day by day.The precision of test and measuring device also is distinct issues.The error of electric energy meter accounts for more than 70% of whole WT-MSR composition error, therefore should put in the first place to the examination of electric energy meter error, and secondly be the error of mutual inductor, the parameter of secondary line voltage drop.To the verification of electric energy meter error, because on-the-spot load condition is in time and different, power factor neither be changeless, influenced by transient state process, when the error of ammeter is moved at the scene also is constantly to change.Traditional detection method be through manually one by one voltameter detect, not only increased labor intensity of operating personnel, but also operating personnel's personal safety formed hidden danger.
The utility model content
The purpose of utility model is to overcome the shortcoming and defect of above-mentioned prior art; A kind of system that the error of electric power meter is carried out long-range verification and monitoring is provided, and the system of this long-range verification and monitoring is the WT-MSR remote detecting system that integrates signal, data acquisition and processing, data base administration, on-site real-time verification, monitoring, alarming, communication.Having solved WT-MSR in present electric substation, the generating plant can not be effectively, the problem of real-time testing electric energy meter error and secondary circuit duty thereof; Be convenient to modern management simultaneously, save the expense and the time of on-the-spot calibration, in time find the failure problems of WT-MSR; And utilized contemporary advanced person's mechanics of communication resource fully; Alleviate labour intensity greatly, improved work efficiency, guaranteed the justice of measuring, just, accurate.
The purpose of the utility model realizes through following technical proposals: the system that the error of electric power meter is carried out long-range verification and monitoring; Comprise field monitoring equipment and administrative center; Be provided with industrial computer between said field monitoring equipment and the administrative center, said industrial computer is connected with field monitoring facilities and administration center respectively.
Said industrial computer is provided with communication interface, and said communication interface and administrative center carry out the signal transmission through communication network.Can either carry out the signal transmission through cable network, also can carry out the signal transmission through wireless network.
Said administrative center comprises remote control computer and local control computer, and said remote control computer all is connected with industrial computer with local control computer.
Said remote control computer and local control computer all are connected with data processor.Data processor is handled the data of collecting according to the program of prior setting.
Said field monitoring equipment comprises data acquisition module, and said data acquisition module is connected with industrial computer.Utilize data acquisition module that the data of voltameter are implemented to detect in real time and gather.
Said data acquisition module is connected with temperature-compensation circuit, and said temperature-compensation circuit comprises temperature compensator and temperature monitoring apparatus.Be used for the data acquisition module is carried out temperature compensation, guarantee to detect the precision of data.
Said data acquisition module is connected with some electric energy meters.Utilize a plurality of data acquisition modules can the WT-MSR of a plurality of electric substations, generating plant be detected.
Said data acquisition module is connected with standard scale, and said standard scale is connected with industrial computer.Standard scale is used for as a kind of standard, for the reference of test chart.
In sum, the beneficial effect of the utility model is: the system of this long-range verification and monitoring is the WT-MSR remote detecting system that integrates signal, data acquisition and processing, data base administration, on-site real-time verification, monitoring, alarming, communication.Having solved WT-MSR in present electric substation, the generating plant can not be effectively, the problem of real-time testing electric energy meter error and secondary circuit duty thereof; Be convenient to modern management simultaneously, save the expense and the time of on-the-spot calibration, in time find the failure problems of WT-MSR; And utilized contemporary advanced person's mechanics of communication resource fully; Alleviate labour intensity greatly, improved work efficiency, guaranteed the justice of measuring, just, accurate.
Description of drawings
Fig. 1 is the schematic diagram of the utility model;
Fig. 2 is the synoptic diagram of temperature compensator.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done further to specify, but the embodiment of the utility model is not limited only to this.
Embodiment:
Like Fig. 1, shown in Figure 2; The error of electric power meter is carried out the system of long-range verification and monitoring; Comprise field monitoring equipment and administrative center; Be provided with industrial computer between said field monitoring equipment and the administrative center, said industrial computer is connected with field monitoring facilities and administration center respectively.System realizes checking signal collection, analyzing and processing, storage and communication etc. to the metering points of electric energy of on-the-spot each access through its field monitoring equipment; Realize long-range and local monitor through administrative center to on-the-spot checkout equipment; In time situation about feeding back to is handled, realized automation function.
Said industrial computer is provided with communication interface, and said communication interface and administrative center carry out the signal transmission through communication network.At first; System realizes on-the-spot polylith Source of Gateway Meter is carried out verification through A/D conversion and data processing to pulse, voltage, the current signal of electric energy meter through data acquisition module; The data that detect are stored and can directly be read checking data at the scene, can transmit data to be detected through communication interface simultaneously, terminal device as: industrial computer can be through receiving these data; Manage, the precision situation of change of on-site supervision electric energy meter so that bad ammeter is in time handled.
Said administrative center comprises remote control computer and local control computer, and said remote control computer all is connected with industrial computer with local control computer.Realize the timely processing and the transmission of the data of on-the-spot checkout equipment collection have been improved work efficiency through remote control computer and local control computer.
Said remote control computer and local control computer all are connected with data processor.Data processor in time compares processing with the data of collecting, and can apace the signal of collecting be made analysis.
Said field monitoring equipment comprises data acquisition module, and said data acquisition module is connected with industrial computer.System adopts the method test that test loop is sealed in the CT secondary circuit; Both guaranteed that current return can not open a way; Can guarantee that again current sample does not influence the measuring accuracy of system; Possess 16 A/D conversion resolution, adopt advanced digital processing in the field monitoring equipment and control the switching that other electronic circuit is realized different passages, thereby reach loop test or the test of specific electric energy meter on-the-spot multichannel.
Said data acquisition module is connected with temperature-compensation circuit, and said temperature-compensation circuit comprises temperature compensator and temperature monitoring apparatus.System has considered the scene temperature situation of change in order to adapt to the on-the-spot test needs in design, be provided with temperature-compensation circuit, contains temperature compensator in the temperature-compensation circuit, avoids temperature variation that measuring accuracy is influenced.After the temperature compensator energising; Output terminal is connected with data acquisition module; Raise 1 ° the time when temperature monitoring apparatus detects scene temperature, the negative 10mV numerical value of temperature compensator output terminal output to data acquisition module, thereby compensated the error of bringing when scene temperature raises; When scene temperature reduced by 1 °, the temperature compensator output terminal was exported the data acquisition module that arrives of positive 10mV numerical value, had compensated the error of having brought when scene temperature reduces.Make the result of fielded system test be under the stable environment, guaranteed the precision of test.Detection system can be provided with test request through remote control computer; Comprise test request and alarm threshold value; Simultaneously can also use the Chinesizing interface data management software of exploitation to carry out data processing, make things convenient for the supporting realization of user to detect the modern management of data in real time.
Said data acquisition module is connected with some electric energy meters, and said data acquisition module is connected with standard scale, and said standard scale is connected with industrial computer.Data acquisition module is transferred to the numerical value of the electric energy meter that collects in the industrial computer, and industrial computer the general contrast the numerical value of this numerical value and standard scale simultaneously in real time, detects the error place; Circulatory monitoring to one group of electric energy meter error; Not only can understand electric energy meter error with the load variations situation, can also grasp electric energy meter, as occur in data communication constantly at the different operating state; Long-time running etc. under the underload, electric energy meter error is to remain within the measurement standard tolerance band.
This cover monitoring system is owing to adopted the high precision standard scale; On-the-spot pulse drawing-in system pulse port with tested one group of electric energy meter; After signal shaping and pre-service; The standard electric energy impulse that 16 A/D converter is responsible for the pulse of tested electric energy meter is sent into microprocessor and internal system compares, thereby calculates the error of electric energy meter.
Because monitoring system is operated in under the test pattern of one group of electric energy meter, internal system is provided with multicircuit switch, and the user switches to corresponding loop and test in the different moment, and microprocessor is served as control, arithmetic core.The principle of work of standard scale similarly after the plurality of voltages of tested electric energy meter and this cover of the electric current introducing monitoring system, is responsible for switching by multicircuit switch; This switching receives the direct management of microprocessor; We can the default control time and the control order, stores presupposed information into memory inside, realizes automatic cycle testing; The assurance whole test process is in good order, makes standard scale at unified voltage, electric current and the pulse signal that can collect corresponding loop constantly.When measuring pressure drop, admittance and error information, call automatically and thresholding is set with measurement parameter compares, when measured value exceeds threshold value, system will trigger the warning pulse automatically, the realization telephone redialing; Or depositing warning message in the warning message register, the local control computer of administrative center or remote control computer can be checked to have or not warning message through in time reading the warning message register equally.
To the access and the collection of this three road signal, monitoring system has realized the consideration of following aspect:
1, voltage circuit is parallelly connected with the ammeter voltage terminal; For preventing that the monitoring system voltage circuit from constituting influence to the normal collection of ammeter terminal voltage; Internal system has been considered complete overcurrent protection measure; When internal system is short-circuited phenomenon, system's automatic cutout ammeter voltage circuit, partition is electrically connected with the ammeter voltage end.
2, the ammeter current return is connected in series with monitoring system; Be that whole design principle of disposal wires is carried out according to current transformer-ammeter-electric energy metrical verification monitoring system-current transformer; For preventing of the unimpeded formation influence of monitoring system end current return to the CT secondary circuit; High precision punching CT has been adopted in monitoring system inside, guarantees that signals collecting and Relay-controlled Circuit can not cause the open circuit of CT secondary dangerous.
3, pulse collection.Because the burst transmissions circuit possibly receive the high frequency noise jamming that the strong magnetic interference of transformer station and other electric power, electronic control type load produce, and causes signal distortion, particularly under the too high situation of pulse constant, antijamming capability is poor more.Monitoring system has designed shaping pulse at pulse input end place (after multichannel is switched), prevents that effectively signal distortion from constituting influence to surveying work.In addition, considered that when mounted the signal transmission utilizes the mode of shielded cable, the influence that on-the-spot unfavorable factor is constituted drops to minimum.
Native system has the function that error, the admittance of CT secondary circuit, CT secondary load, PT secondary voltage drop to electric energy meter are tested, and the system of this installation has only selected the error testing of electric energy meter for use, and other functions can be expanded when needed.After power frequency ac voltage and electric current are introduced into monitoring system; A/D converter carries out mould/number conversion to the signal of particular loop behind multicircuit switch, and microprocessor carries out other parameters (power factor, phase angle, frequency, power) and converts to predefined algorithm then.
The data of loop test are deposited in the storer (hard disk) of on-the-spot industrial computer automatically, and the format of data to divide into groups can have been preserved parameter according to the recording mechanism inquiry.Also can pass through the download of the RS-232 serial communication effected data of system.Parameter is set in addition, comprises that the mode of connection, table number, pulse constant and the test number of turns etc. of monitoring circuit can be uploaded in the storer (hard disk) of on-the-spot industrial computer through Local or Remote; Alarm parameters, error threshold can be uploaded equally or local directly the setting is prestored in the storer (hard disk) of on-the-spot industrial computer.When measuring pressure drop, admittance and error information, call automatically and thresholding is set with measurement parameter compares, when measured value exceeds threshold value, system will trigger the warning pulse automatically, the realization telephone redialing; Or depositing warning message in the warning message register, background computer can be checked to have or not warning message through in time reading the warning message register equally.
The application of the error of electric power meter being carried out the system of long-range verification and monitoring has solved the on-the-spot test problem satisfactorily.Wiring error in the time of can avoiding on-the-spot test, the error that causes the intermediate link in the test is reduced to zero.It can also realize each electric power instantaneous flow under the on-line monitoring operation of power networks situation simultaneously, follows the tracks of the load condition of circuit, and the error condition of WT-MSRs such as electric energy meter is understood in monitoring in real time.It adopts modern means of communication to satisfy the demand of modern office to resource sharing.The electric quantity loss that the application of on-line detecting system also avoids electric energy meter error to cause to power department from another point of view, thus guarantee the economic benefit of power department.
Take aforesaid way, just can realize the utility model preferably.

Claims (8)

1. the error of electric power meter is carried out the system of long-range verification and monitoring; It is characterized in that: comprise field monitoring equipment and administrative center; Be provided with industrial computer between said field monitoring equipment and the administrative center, said industrial computer is connected with field monitoring facilities and administration center respectively.
2. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 1 is characterized in that: said industrial computer is provided with communication interface, and said communication interface and administrative center carry out the signal transmission through communication network.
3. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 1; It is characterized in that: said administrative center comprises remote control computer and local control computer, and said remote control computer all is connected with industrial computer with local control computer.
4. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 3 is characterized in that: said remote control computer and local control computer all are connected with data processor.
5. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 1 is characterized in that: said field monitoring equipment comprises data acquisition module, and said data acquisition module is connected with industrial computer.
6. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 5 is characterized in that: said data acquisition module is connected with temperature-compensation circuit, and said temperature-compensation circuit comprises temperature compensator and temperature monitoring apparatus.
7. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 5 is characterized in that: said data acquisition module is connected with some electric energy meters.
8. the system that the error of electric power meter is carried out long-range verification and monitoring as claimed in claim 5 is characterized in that: said data acquisition module is connected with standard scale, and said standard scale is connected with industrial computer.
CN2011203534248U 2011-09-21 2011-09-21 System for remote checking and monitoring for electric energy metering device Expired - Lifetime CN202210151U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102819004A (en) * 2012-08-31 2012-12-12 江苏省电力公司电力科学研究院 Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations
CN103399185A (en) * 2013-07-19 2013-11-20 国家电网公司 Computer system for preventing electricity stealing based on smart electric meters
CN104076316A (en) * 2013-03-27 2014-10-01 中航物联技术(北京)有限公司 Ammeter fault patrol method and system
CN104793172A (en) * 2015-05-04 2015-07-22 武汉中原电子信息公司 Temperature segmentation calibrating and metering method of power metering device
CN105203987A (en) * 2015-10-27 2015-12-30 国网山东利津县供电公司 Long-distance detection device and method for electric energy measurement of transformer substation
CN105425003A (en) * 2015-11-16 2016-03-23 国网河南省电力公司平顶山供电公司 Two-way information interaction method and two-way information interaction device for watt-hour meter boxes of residents
CN105738858A (en) * 2016-05-11 2016-07-06 国网山东省电力公司阳谷县供电公司 Electric energy meter calibration alarm system based on single-chip microcomputer and working method and application thereof
CN104280715B (en) * 2014-10-17 2017-01-11 国网四川省电力公司电力科学研究院 Gateway electric energy meter online monitoring system
CN106501758A (en) * 2016-12-02 2017-03-15 国网四川省电力公司电力科学研究院 A kind of electric power meter metering performance Compare System and method
CN107436420A (en) * 2016-05-27 2017-12-05 山东大学 A kind of electric energy metrical remote verification monitoring system and its method of work
CN110082699A (en) * 2019-05-10 2019-08-02 国网天津市电力公司电力科学研究院 A kind of low-voltage platform area intelligent electric energy meter kinematic error calculation method and its system
CN113138362A (en) * 2021-05-11 2021-07-20 深圳市先行电气技术有限公司 Calibration method for automatically compensating electric energy metering error of electric energy meter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102819004B (en) * 2012-08-31 2013-08-07 江苏省电力公司电力科学研究院 Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations
CN102819004A (en) * 2012-08-31 2012-12-12 江苏省电力公司电力科学研究院 Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations
CN104076316A (en) * 2013-03-27 2014-10-01 中航物联技术(北京)有限公司 Ammeter fault patrol method and system
CN103399185A (en) * 2013-07-19 2013-11-20 国家电网公司 Computer system for preventing electricity stealing based on smart electric meters
CN104280715B (en) * 2014-10-17 2017-01-11 国网四川省电力公司电力科学研究院 Gateway electric energy meter online monitoring system
CN104793172A (en) * 2015-05-04 2015-07-22 武汉中原电子信息公司 Temperature segmentation calibrating and metering method of power metering device
CN105203987A (en) * 2015-10-27 2015-12-30 国网山东利津县供电公司 Long-distance detection device and method for electric energy measurement of transformer substation
CN105425003A (en) * 2015-11-16 2016-03-23 国网河南省电力公司平顶山供电公司 Two-way information interaction method and two-way information interaction device for watt-hour meter boxes of residents
CN105738858A (en) * 2016-05-11 2016-07-06 国网山东省电力公司阳谷县供电公司 Electric energy meter calibration alarm system based on single-chip microcomputer and working method and application thereof
CN107436420A (en) * 2016-05-27 2017-12-05 山东大学 A kind of electric energy metrical remote verification monitoring system and its method of work
CN106501758A (en) * 2016-12-02 2017-03-15 国网四川省电力公司电力科学研究院 A kind of electric power meter metering performance Compare System and method
CN110082699A (en) * 2019-05-10 2019-08-02 国网天津市电力公司电力科学研究院 A kind of low-voltage platform area intelligent electric energy meter kinematic error calculation method and its system
CN110082699B (en) * 2019-05-10 2021-03-19 国网天津市电力公司电力科学研究院 Low-voltage transformer area intelligent electric energy meter operation error calculation method and system
CN113138362A (en) * 2021-05-11 2021-07-20 深圳市先行电气技术有限公司 Calibration method for automatically compensating electric energy metering error of electric energy meter

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Address after: 199 No. 638000 Guang'an city of Sichuan Province, Jinan Avenue

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Granted publication date: 20120502