CN104198980A - Accuracy evaluation system for digital electric energy meter - Google Patents

Accuracy evaluation system for digital electric energy meter Download PDF

Info

Publication number
CN104198980A
CN104198980A CN201410437426.3A CN201410437426A CN104198980A CN 104198980 A CN104198980 A CN 104198980A CN 201410437426 A CN201410437426 A CN 201410437426A CN 104198980 A CN104198980 A CN 104198980A
Authority
CN
China
Prior art keywords
electric energy
energy meter
digital
digital electric
evaluation system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410437426.3A
Other languages
Chinese (zh)
Inventor
白静芬
林繁涛
王晔
刘佳
陈松方
宋晓卉
卢达
赵莎
章欣
徐英辉
杨湘江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING ZHIWANG CHUANGNENG TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
BEIJING ZHIWANG CHUANGNENG TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING ZHIWANG CHUANGNENG TECHNOLOGY Co Ltd, State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI filed Critical BEIJING ZHIWANG CHUANGNENG TECHNOLOGY Co Ltd
Priority to CN201410437426.3A priority Critical patent/CN104198980A/en
Publication of CN104198980A publication Critical patent/CN104198980A/en
Pending legal-status Critical Current

Links

Landscapes

  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention provides an accuracy evaluation system for a digital electric energy meter. The system comprises an analogue standard source, an analogue standard electric energy meter, a digital electric energy meter calibrator and a control computer, wherein the control computer is connected with the analogue standard source and the digital electric energy meter calibrator, the analogue standard source is connected with the digital electric energy meter through the digital electric energy meter calibrator, and connected with the analogue standard meter simultaneously; the voltage range output by the analogue standard source is 0-480V, and the current range is 0-100A. The invention provides an accuracy evaluation system for a digital electric energy meter, which solves the problem that the present electric energy meter test device is incapable of testing or accurately testing the reliability and working stability of data reception of the digital electric energy meter.

Description

A kind of digitalized electrical energy meter accuracy evaluation system
Technical field
The present invention relates to a kind of evaluating system, be specifically related to a kind of digitalized electrical energy meter accuracy evaluation system.
Background technology
Along with the technology such as electronic mutual inductor, intelligent primary equipment and microelectric technique reach its maturity, intelligent substation or digital transformer substation have become a kind of trend of development.In digital transformer substation, electric energy meter and mutual inductor have not reconstructed electric loop, but optical cable connects electronic type voltage current transformer, intelligent primary equipment etc. so that transmitting digitized signal.Digitalized electrical energy meter and merge cells or electronic mutual inductor have substantially adopted the optical-fibre communications mode of high reliability.Digitalized electrical energy meter will be intelligent substation electric energy metrical visual plant, so the demand of the electric energy meter of digital transformer substation also can be increasing.
There is the change of essence in the interface mode of digitalized electrical energy meter and principle of work, it is input as the Frame of ethernet type compared with traditional electric energy meter, and in the situation that transmission system bandwidth is enough, the metering of electric energy meter active energy does not have error in theory.But in fact digitalized electrical energy meter is subject to processing the factor impacts such as device word length, system clock, and error certainly exists, and it is less that only the precision stability of digitalized electrical energy meter is higher, temperature is floated impact.But digital electricity meter is except fundamental error, can whether digital interface part also has a lot of sundry items to need to detect, as reliable in received data, when digital port suffers network storm, normally work, when numeral message is abnormal, can electric energy meter normally work, agreement compliance test etc.For these problems, original electric energy meter testing apparatus has not too been applicable to digitalized electrical energy meter, force the electric energy metrical of intelligent station still to adopt traditional measuring apparatus, this does not only meet relevant electric energy metrical and closes the regulation of stomion, and the digitizing process of intelligent station is had a greatly reduced quality.Therefore, be necessary to study a kind of new electric energy meter degree of accuracy assessment apparatus and solve digitalized electrical energy meter and test these problems that face, meet the test request to digitalized electrical energy meter.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of digitalized electrical energy meter accuracy evaluation system, solved current electric energy meter testing apparatus and cannot test or accurately test out the reception data reliability of digitalized electrical energy meter, the problem of job stability.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of digitalized electrical energy meter accuracy evaluation system, described system comprises mock standard source, mock standard electric energy meter, digitalized electrical energy meter tester and controls computing machine; Described control computing machine connecting analog standard source and digitalized electrical energy meter tester, described mock standard source connects digitalized electrical energy meter by digitalized electrical energy meter tester, is connected with mock standard table simultaneously.
Described control computing machine connects described digitalized electrical energy meter tester by Ethernet.
Described control computing machine, by gpib bus connecting analog standard source, makes mock standard source require output voltage signal and current signal according to test point is set.
Described mock standard source output voltage signal and current signal are divided into two-way, voltage circuit and the current return of a road input mock standard electric energy meter, and voltage circuit and the current return of described digitalized electrical energy meter tester inputted on another road.
Described mock standard electric energy meter is measured electric energy by voltage signal and current signal, and the electric energy of measurement is converted to high-frequency electrical energy pulse, inputs to the error calculating module of described digitalized electrical energy meter tester.
Described digitalized electrical energy meter tester comprises A/D sampling module, stipulations modular converter and error calculating module; Voltage signal and current signal are converted to digital signal by described A/D sampling module, and described digital signal produces sampling value message by stipulations modular converter, and described sampling value message is by optical fiber network interface input digitalized electrical energy meter.
Described sampling value message meets IEC61850-9-2 regulation, and is less than 1us the lock in time of sampling value message.
Described digitalized electrical energy meter obtains electric energy according to the sampling value message of input, produces corresponding low-frequency electrical energy pulse simultaneously, and described low-frequency electrical energy pulse inputs to the error calculating module of described digitalized electrical energy meter tester.
Described error calculating module compares the high-frequency electrical energy pulse of input and low energy electrical energy pulse, draws the electric energy measurement error of digitalized electrical energy meter, completes the Accuracy evaluation of digitalized electrical energy meter.
The frame losing of described digitalized electrical energy meter tester analog sampling simultaneously value message and the abnormality such as asynchronous, detect the accuracy of digitalized electrical energy meter under abnormality.
The voltage range of described mock standard source output is 0~480V, and range of current is 0~100A, and the class of accuracy of described mock standard electric energy meter is 0.01 grade; Described digital electricity meter tester sampling accuracy is less than 0.03%.
Compared with prior art, beneficial effect of the present invention is:
Digitalized electrical energy meter accuracy evaluation system provided by the invention, can be widely used in intelligent substation electric energy measuring equipment, realized digitalized electric energy to the tracing to the source of simulation electric energy, and can be used for the Laboratory Evaluation of digitalized electrical energy meter accuracy, also can on-the-spot test; In addition except the precision to electric energy meter is tested, the abnormality such as digital electric energy meter tester simultaneously can also analog message frame losing, network storm, detect the accuracy of digitalized electrical energy meter under abnormality.
Brief description of the drawings
Fig. 1 is digitalized electrical energy meter accuracy evaluation system structured flowchart.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, the invention provides a kind of digitalized electrical energy meter accuracy evaluation system, described system comprises mock standard source, mock standard electric energy meter, digitalized electrical energy meter tester and controls computing machine; Described control computing machine connecting analog standard source and digitalized electrical energy meter tester, described mock standard source connects digitalized electrical energy meter by digitalized electrical energy meter tester, is connected with mock standard table simultaneously; The voltage range of described mock standard source output is 0~480V, and range of current is 0~100A.
Described control computing machine connects described digitalized electrical energy meter tester by Ethernet.
Described control computing machine, by gpib bus connecting analog standard source, makes mock standard source require output voltage signal and current signal according to test point is set.
Described mock standard source output voltage signal and current signal are divided into two-way, voltage circuit and the current return of a road input mock standard electric energy meter, and voltage circuit and the current return of described digitalized electrical energy meter tester inputted on another road.
Described mock standard electric energy meter is measured electric energy by voltage signal and current signal, and the electric energy of measurement is converted to high-frequency electrical energy pulse, inputs to the error calculating module of described digitalized electrical energy meter tester.
Described digitalized electrical energy meter tester comprises A/D sampling module, stipulations modular converter and error calculating module; Voltage signal and current signal are converted to digital signal by described A/D sampling module, and described digital signal produces sampling value message by stipulations modular converter, and described sampling value message is by optical fiber network interface input digitalized electrical energy meter.
Described sampling value message meets IEC61850-9-2 regulation, and is less than 1us the lock in time of sampling value message.
Described digitalized electrical energy meter obtains electric energy according to the sampling value message of input, produces corresponding low-frequency electrical energy pulse simultaneously, and described low-frequency electrical energy pulse inputs to the error calculating module of described digitalized electrical energy meter tester.
Described error calculating module compares the high-frequency electrical energy pulse of input and low energy electrical energy pulse, draws the electric energy measurement error of digitalized electrical energy meter, completes the Accuracy evaluation of digitalized electrical energy meter.Error is little, shows that digitalized electrical energy meter accuracy is higher.
The frame losing of described digitalized electrical energy meter tester analog sampling simultaneously value message and the abnormality such as asynchronous, detect the accuracy of digitalized electrical energy meter under abnormality.
The class of accuracy of described mock standard electric energy meter is 0.01 grade; Described digital electricity meter tester sampling accuracy is less than 0.03%.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify or be equal to replacement the specific embodiment of the present invention with reference to above-described embodiment; these do not depart from any amendment of spirit and scope of the invention or are equal to replacement, within the claim protection domain of the present invention all awaiting the reply in application.

Claims (11)

1.一种数字化电能表准确度评估系统,其特征在于:所述系统包括模拟标准源、模拟标准电能表、数字化电能表校验仪和控制计算机;所述控制计算机连接模拟标准源和数字化电能表校验仪,所述模拟标准源通过数字化电能表校验仪连接数字化电能表,同时与模拟标准表连接。1. A digital electric energy meter accuracy evaluation system is characterized in that: the system includes an analog standard source, an analog standard electric energy meter, a digital electric energy meter calibrator and a control computer; the control computer is connected to an analog standard source and a digitized electric energy A meter calibrator, the analog standard source is connected to the digital watt-hour meter through the digital watt-hour meter calibrator, and at the same time connected to the analog standard meter. 2.根据权利要求1所述的数字化电能表准确度评估系统,其特征在于:所述控制计算机通过以太网连接所述数字化电能表校验仪。2. The digital electric energy meter accuracy evaluation system according to claim 1, wherein the control computer is connected to the digital electric energy meter calibrator through Ethernet. 3.根据权利要求1所述的数字化电能表准确度评估系统,其特征在于:所述控制计算机通过GPIB总线连接模拟标准源,使模拟标准源按照设置测试点要求输出电压信号和电流信号。3. The digital electric energy meter accuracy evaluation system according to claim 1, characterized in that: the control computer is connected to the analog standard source through the GPIB bus, so that the analog standard source outputs voltage signals and current signals according to the requirements of the set test points. 4.根据权利要求1所述的数字化电能表准确度评估系统,其特征在于:所述模拟标准源输出电压信号和电流信号分为两路,一路输入模拟标准电能表的电压回路和电流回路,另一路输入所述数字化电能表校验仪的电压回路和电流回路。4. The digital watt-hour meter accuracy evaluation system according to claim 1, characterized in that: said analog standard source output voltage signal and current signal are divided into two paths, and one path inputs the voltage loop and the current loop of the analog standard watt-hour meter, The other input is the voltage loop and current loop of the digital electric energy meter calibrator. 5.根据权利要求1所述的数字化电能表准确度评估系统,其特征在于:所述模拟标准电能表通过电压信号和电流信号测量电能,并将测量的电能转换为高频电能脉冲,输入给所述数字化电能表校验仪的误差计算模块。5. The digital watt-hour meter accuracy evaluation system according to claim 1, characterized in that: said analog standard watt-hour meter measures electric energy by voltage signal and current signal, and converts the measured electric energy into high-frequency electric energy pulse, which is input to The error calculation module of the digital electric energy meter calibrator. 6.根据权利要求5所述的数字化电能表准确度评估系统,其特征在于:所述数字化电能表校验仪包括A/D采样模块、规约转换模块和误差计算模块;所述A/D采样模块将电压信号和电流信号转换为数字信号,所述数字信号通过规约转换模块产生采样值报文,所述采样值报文通过光纤网口输入数字化电能表。6. The digital electric energy meter accuracy evaluation system according to claim 5, characterized in that: the digital electric energy meter calibrator includes an A/D sampling module, a protocol conversion module and an error calculation module; the A/D sampling The module converts the voltage signal and current signal into a digital signal, and the digital signal generates a sample value message through the protocol conversion module, and the sample value message is input into the digital electric energy meter through the optical fiber network port. 7.根据权利要求6所述的数字化电能表准确度评估系统,其特征在于:所述采样值报文符合IEC61850-9-2规定,且采样值报文的同步时间小于1us。7. The digital electric energy meter accuracy evaluation system according to claim 6, characterized in that: the sampled value message conforms to the regulations of IEC61850-9-2, and the synchronization time of the sampled value message is less than 1us. 8.根据权利要求6所述的数字化电能表准确度评估系统,其特征在于:所述数字化电能表根据输入的采样值报文得到电能,同时产生相应的低频电能脉冲,所述低频电能脉冲输入给所述数字化电能表校验仪的误差计算模块。8. The digital electric energy meter accuracy evaluation system according to claim 6, characterized in that: said digital electric energy meter obtains electric energy according to the input sampling value message, and generates corresponding low-frequency electric energy pulse at the same time, said low-frequency electric energy pulse input An error calculation module for the digital electric energy meter calibrator. 9.根据权利要求8所述的数字化电能表准确度评估系统,其特征在于:所述误差计算模块将输入的高频电能脉冲和低能电能脉冲进行比较,得出数字化电能表的电能测量误差,完成数字化电能表的准确度评估。9. The digital electric energy meter accuracy evaluation system according to claim 8, characterized in that: said error calculation module compares the input high frequency electric energy pulse with the low energy electric energy pulse to obtain the electric energy measurement error of the digital electric energy meter, Complete the accuracy assessment of the digital energy meter. 10.根据权利要求6所述的数字化电能表准确度评估系统,其特征在于:所述数字化电能表校验仪同时模拟采样值报文的丢帧和非同步等异常状态,检测数字化电能表在异常状态下的准确度。10. The digital electric energy meter accuracy evaluation system according to claim 6, characterized in that: the digital electric energy meter calibrator simultaneously simulates abnormal states such as frame loss and non-synchronization of the sampled value message, and detects that the digital electric energy meter is in the Accuracy under abnormal conditions. 11.根据权利要求1或4所述的数字化电能表准确度评估系统,其特征在于:所述模拟标准源输出的电压范围为0~480V,电流范围为0~100A;所述模拟标准电能表的准确度等级为0.01级;所述数字电能表校验仪采样准确度小于0.03%。11. The digital watt-hour meter accuracy evaluation system according to claim 1 or 4, characterized in that: the voltage range output by the analog standard source is 0-480V, and the current range is 0-100A; the analog standard watt-hour meter The accuracy level is 0.01; the sampling accuracy of the digital electric energy meter calibrator is less than 0.03%.
CN201410437426.3A 2014-08-29 2014-08-29 Accuracy evaluation system for digital electric energy meter Pending CN104198980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410437426.3A CN104198980A (en) 2014-08-29 2014-08-29 Accuracy evaluation system for digital electric energy meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410437426.3A CN104198980A (en) 2014-08-29 2014-08-29 Accuracy evaluation system for digital electric energy meter

Publications (1)

Publication Number Publication Date
CN104198980A true CN104198980A (en) 2014-12-10

Family

ID=52084292

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410437426.3A Pending CN104198980A (en) 2014-08-29 2014-08-29 Accuracy evaluation system for digital electric energy meter

Country Status (1)

Country Link
CN (1) CN104198980A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991221A (en) * 2015-07-07 2015-10-21 国家电网公司 Device and detection method for calibrating metering device in distributed substation
CN105203980A (en) * 2015-09-14 2015-12-30 广西电网有限责任公司电力科学研究院 Electric energy quality self-inspection system and self-inspection method thereof
CN105548947A (en) * 2016-01-28 2016-05-04 云南电网有限责任公司电力科学研究院 Method and system of synchronization traceability of digitalization electric energy meter
CN105717476A (en) * 2016-01-28 2016-06-29 云南电网有限责任公司电力科学研究院 Test method and system for digital electric energy meter
CN105911495A (en) * 2016-04-12 2016-08-31 国网江苏省电力公司电力科学研究院 Analog standard source with IEC61850 digital interface and testing method thereof
CN105954705A (en) * 2016-07-06 2016-09-21 国网上海市电力公司 Digital electric energy measuring equipment remote calibration system and method
CN106199489A (en) * 2016-07-06 2016-12-07 国网上海市电力公司 Laboratory reproduction type digitalized electric energy measuring equipment remote calibration system and method
CN106383330A (en) * 2016-10-08 2017-02-08 清华大学 Digital electric energy metering algorithm test platform
CN106443563A (en) * 2016-11-01 2017-02-22 国网江西省电力公司电力科学研究院 Field environment based integrated calibrating and analytic device of digital electric energy meter
CN107577223A (en) * 2017-09-26 2018-01-12 中广核研究院有限公司 A kind of nuclear power plant's analog control system digitizes improved checking system
CN107885097A (en) * 2017-10-24 2018-04-06 中广核核电运营有限公司 A kind of Nuclear Power Plant Simulation I&C system DCS transformations closed loop checking system and method
CN107894761A (en) * 2017-11-07 2018-04-10 广东核电合营有限公司 The method of testing and platform of Nuclear Power Plant Simulation I&C system digital improvement
CN109444785A (en) * 2018-11-16 2019-03-08 中国电力科学研究院有限公司 A kind of measurement method of digital quantity message accuracy
CN109725281A (en) * 2019-01-18 2019-05-07 国网江苏省电力有限公司电力科学研究院 A method and system for remote traceability of digital electric energy meter based on quantum technology
CN110045267A (en) * 2019-05-05 2019-07-23 珠海国测电能仪表科技有限公司 A kind of intelligence multi-loop electric minor guide rail meter route board detecting method and detection device
CN111896910A (en) * 2020-07-30 2020-11-06 贵州电网有限责任公司 Pluggable metering data comparison method and system based on metering equipment
CN112305487A (en) * 2020-09-21 2021-02-02 中国南方电网有限责任公司超高压输电公司检修试验中心 A laboratory error calibration system and method for a digital DC energy meter
CN112526440A (en) * 2020-11-23 2021-03-19 国网江苏省电力有限公司 Method and system for monitoring running error of electric energy meter based on accuracy grade of mutual inductor
CN114114125A (en) * 2020-08-27 2022-03-01 萨基姆通讯能源及电信联合股份公司 Verifying the accuracy of measurements made by an electricity meter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101718856A (en) * 2009-12-11 2010-06-02 中国电力科学研究院 Calibration system of digital quantity input type electric energy meter
CN101900799A (en) * 2009-09-30 2010-12-01 广东电网公司电力科学研究院 Digital electric energy meter checking device based on analog source tracing method
CN202033470U (en) * 2011-03-01 2011-11-09 陕西电力科学研究院 Digital electric energy meter calibration system
CN102928810A (en) * 2012-11-12 2013-02-13 四川电力科学研究院 System and method for evaluating accuracy of digital electric energy meter
CN103064053A (en) * 2012-12-14 2013-04-24 中国电力科学研究院 Online calibration device of digital quantity input type electric energy meter
CN104007410A (en) * 2014-06-12 2014-08-27 国家电网公司 Digital electric energy meter verifying device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900799A (en) * 2009-09-30 2010-12-01 广东电网公司电力科学研究院 Digital electric energy meter checking device based on analog source tracing method
CN101718856A (en) * 2009-12-11 2010-06-02 中国电力科学研究院 Calibration system of digital quantity input type electric energy meter
CN202033470U (en) * 2011-03-01 2011-11-09 陕西电力科学研究院 Digital electric energy meter calibration system
CN102928810A (en) * 2012-11-12 2013-02-13 四川电力科学研究院 System and method for evaluating accuracy of digital electric energy meter
CN103064053A (en) * 2012-12-14 2013-04-24 中国电力科学研究院 Online calibration device of digital quantity input type electric energy meter
CN104007410A (en) * 2014-06-12 2014-08-27 国家电网公司 Digital electric energy meter verifying device

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991221A (en) * 2015-07-07 2015-10-21 国家电网公司 Device and detection method for calibrating metering device in distributed substation
CN104991221B (en) * 2015-07-07 2018-01-30 国家电网公司 The device and detection method calibrated to the metering device in distributed transformer substation
CN105203980A (en) * 2015-09-14 2015-12-30 广西电网有限责任公司电力科学研究院 Electric energy quality self-inspection system and self-inspection method thereof
CN105203980B (en) * 2015-09-14 2018-08-24 广西电网有限责任公司电力科学研究院 A kind of power quality self-checking system and its self checking method
CN105717476B (en) * 2016-01-28 2018-03-30 云南电网有限责任公司电力科学研究院 The method of testing and system of a kind of digital electric energy meter
CN105548947A (en) * 2016-01-28 2016-05-04 云南电网有限责任公司电力科学研究院 Method and system of synchronization traceability of digitalization electric energy meter
CN105717476A (en) * 2016-01-28 2016-06-29 云南电网有限责任公司电力科学研究院 Test method and system for digital electric energy meter
CN105548947B (en) * 2016-01-28 2019-02-26 云南电网有限责任公司电力科学研究院 A method and system for synchronous traceability of digital electric energy meter
CN105911495A (en) * 2016-04-12 2016-08-31 国网江苏省电力公司电力科学研究院 Analog standard source with IEC61850 digital interface and testing method thereof
CN105954705A (en) * 2016-07-06 2016-09-21 国网上海市电力公司 Digital electric energy measuring equipment remote calibration system and method
CN106199489A (en) * 2016-07-06 2016-12-07 国网上海市电力公司 Laboratory reproduction type digitalized electric energy measuring equipment remote calibration system and method
CN106383330B (en) * 2016-10-08 2019-05-28 清华大学 Digitalized electric energy measures test of heuristics platform
CN106383330A (en) * 2016-10-08 2017-02-08 清华大学 Digital electric energy metering algorithm test platform
CN106443563A (en) * 2016-11-01 2017-02-22 国网江西省电力公司电力科学研究院 Field environment based integrated calibrating and analytic device of digital electric energy meter
CN107577223A (en) * 2017-09-26 2018-01-12 中广核研究院有限公司 A kind of nuclear power plant's analog control system digitizes improved checking system
CN107577223B (en) * 2017-09-26 2023-11-14 中广核研究院有限公司 Digital improved verification system of nuclear power plant analog control system
CN107885097A (en) * 2017-10-24 2018-04-06 中广核核电运营有限公司 A kind of Nuclear Power Plant Simulation I&C system DCS transformations closed loop checking system and method
CN107894761A (en) * 2017-11-07 2018-04-10 广东核电合营有限公司 The method of testing and platform of Nuclear Power Plant Simulation I&C system digital improvement
CN109444785B (en) * 2018-11-16 2022-04-22 中国电力科学研究院有限公司 Method for measuring accuracy of digital quantity message
CN109444785A (en) * 2018-11-16 2019-03-08 中国电力科学研究院有限公司 A kind of measurement method of digital quantity message accuracy
CN109725281A (en) * 2019-01-18 2019-05-07 国网江苏省电力有限公司电力科学研究院 A method and system for remote traceability of digital electric energy meter based on quantum technology
CN110045267A (en) * 2019-05-05 2019-07-23 珠海国测电能仪表科技有限公司 A kind of intelligence multi-loop electric minor guide rail meter route board detecting method and detection device
CN111896910A (en) * 2020-07-30 2020-11-06 贵州电网有限责任公司 Pluggable metering data comparison method and system based on metering equipment
CN114114125A (en) * 2020-08-27 2022-03-01 萨基姆通讯能源及电信联合股份公司 Verifying the accuracy of measurements made by an electricity meter
CN112305487A (en) * 2020-09-21 2021-02-02 中国南方电网有限责任公司超高压输电公司检修试验中心 A laboratory error calibration system and method for a digital DC energy meter
CN112526440A (en) * 2020-11-23 2021-03-19 国网江苏省电力有限公司 Method and system for monitoring running error of electric energy meter based on accuracy grade of mutual inductor
CN112526440B (en) * 2020-11-23 2023-11-14 国网江苏省电力有限公司 Electric energy meter operation error monitoring method and system based on accuracy grade of mutual inductor

Similar Documents

Publication Publication Date Title
CN104198980A (en) Accuracy evaluation system for digital electric energy meter
CN103336264B (en) Digital electric energy meter quantity value tracing system based on analog quantity detection and digital electric energy meter quantity value tracing method based analog quantity detection
CN202443082U (en) Merging unit test system with analog input and university
CN202758062U (en) Overall metering error detection system of digital transformer station electric energy metering device
CN201993463U (en) Testing device of digital electric energy meter
CN103135087B (en) Electronic mutual inductor whole detection and evaluating system
CN101498775B (en) Calibration apparatus for gate energy meter of digitized transforming plant
CN109407033B (en) A calibration device for DC transformer transient calibrator
CN102928810A (en) System and method for evaluating accuracy of digital electric energy meter
CN108872921A (en) Device and method for verifying broadband characteristics of direct current transformer
CN104062625A (en) Digital electric energy metering device calibration equipment and method thereof
CN203930043U (en) A kind of digitalized electric energy measuring apparatus correcting device
CN103901391B (en) New Analog Standard Meter with Digital Energy Meter Detection Function and Its Detection Method
CN202033470U (en) Digital electric energy meter calibration system
CN105785306A (en) Voltage transformer on-line group calibration method and apparatus
CN204065394U (en) A kind of digital electric energy meter in-situs tester based on IEC61850
CN204086516U (en) A kind of digitalized electrical energy meter accuracy evaluation system
CN103048638A (en) Multi-function power digital signal inspection device
CN203069774U (en) System for evaluating accuracy of digital electric energy meter
CN103901384A (en) Device and method for detecting analog quantity output standard power source and digital quantity output standard power source
CN104569899A (en) High-accuracy high-voltage direct-current transformer calibrator
CN204331019U (en) A kind of digital electricity meter IEC61850 compliance test system
CN104007410A (en) Digital electric energy meter verifying device
CN103558571A (en) Calibration system of electronic transformer and merging unit
CN107843864A (en) A kind of electrical measuring device dynamic property general-utility test platform

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE BEIJING ZH

Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE BEIJING ZHIWANG CHUANGNENG TECHNOLOGY CO., LTD.

Effective date: 20150113

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20150113

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant after: State Grid Corporation of China

Applicant after: China Electric Power Research Institute

Applicant after: Beijing Zhiwang Chuangneng Technology Co., Ltd.

Applicant after: State Grid Zhejiang Electric Power Company

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant before: State Grid Corporation of China

Applicant before: China Electric Power Research Institute

Applicant before: Beijing Zhiwang Chuangneng Technology Co., Ltd.

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20141210