CN104991221B - The device and detection method calibrated to the metering device in distributed transformer substation - Google Patents
The device and detection method calibrated to the metering device in distributed transformer substation Download PDFInfo
- Publication number
- CN104991221B CN104991221B CN201510393922.8A CN201510393922A CN104991221B CN 104991221 B CN104991221 B CN 104991221B CN 201510393922 A CN201510393922 A CN 201510393922A CN 104991221 B CN104991221 B CN 104991221B
- Authority
- CN
- China
- Prior art keywords
- signal
- time
- current
- source
- voltage
- 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.)
- Active
Links
Abstract
Description
Claims (3)
- A kind of 1. device that metering device in distributed transformer substation is calibrated, it is characterised in that:Normalized current source (1) and Current data collector (2) be connected and with GPS/ Big Dipper time service antenna makeup time normalized current sources (3), standard voltage source (4) it is connected and is marked with GPS/ Big Dipper time service antenna makeup time standard voltage sources (6), time with voltage data collector (5) Quasi- current source (3) is connected with current signal sending module (7), and time standard voltage source (6) connects with voltage signal sending module (8) Connect, time standard current source (3) and time standard voltage source (6) connection combining unit (9), combining unit (9) connection numeral electricity Energy table (10), digital electricity meter (10) connection electrical energy pulse acquisition equipment (11), electrical energy pulse acquisition equipment (11) connection is wireless Communication module (12), reference power supply signal receiving module (13) and current signal sending module (7) and voltage signal sending module (8) communication connection, wireless communication module (12) and reference power supply signal receiving module (13) are connected with PC (14);GPS/ Big Dipper time service antennas are also associated with the electrical energy pulse acquisition equipment (11);The nanosecond of the time service precision of the GPS/ Big Dippeves time service antenna≤100.
- 2. the device that the metering device according to claim 1 in distributed transformer substation is calibrated, it is characterised in that: The combining unit (9) is connected with digital electricity meter (10) by optical fiber.
- 3. a kind of calibrated using any described device in claim 1-2 to the metering device in distributed transformer substation Detection method, it is characterised in that:Comprise the following steps,1) use digital frequency synthesis technology, using GPS-1PPS as synchronizing signal, frequency synthesis phase reference signal, using based on DSP DC digital frequency synthesis technique, synthesis and the standard signal source of GPS second impulsive synchronization, target time when output carries Normalized current source and time standard voltage source;2) electric current and voltage analog signal of current signal collector and voltage signal collector collection are input to combining unit, close And unit converts analog signals into data signal and is transported to digital electricity meter by optical fiber;3) digital electricity meter calculates electric flux by the data signal of reception and is electrical energy pulse by electric energy conversion, electric energy arteries and veins Rush acquisition equipment capture electrical energy pulse and PC is sent to by wireless communication module;4) PC passes through reference power supply signal receiving module receiving step 1) in when target time standard current source and time Standard voltage source signal of change goes out electric flux, and the electric flux sent with electrical energy pulse acquisition equipment is compared, calculation error, from And realize the purpose that power/energy calibration is carried out to the metering device in distributed transformer substation;The frequency adjustment method step of digital frequency synthesis technology is in the step 1):A. F (I)=A is pressed1*cos(360°*I/N+θ1)+A2*cos(2*360°*I/N+θ2)+……+Ancos(n*360°*I/N+ θn) to signal N equal portions, the amplitude of all discrete points of signal is calculated, and these amplitudes are arranged in order deposit data field, as Basic wave function;B. give four-quadrant 16 multiplication DAC wave function by DSP, reduction obtains required analog signal;C. inputted by changing DAC benchmark come adjusting signal amplitude, change the phase angle at the beginning of the starting point Regulate signal of waveform;D. because of signal frequency f=fs/N, fs is sample frequency, and 1/ Δ fs is sampling time interval, changes the i.e. adjustable letters of Δ fs Number frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510393922.8A CN104991221B (en) | 2015-07-07 | 2015-07-07 | The device and detection method calibrated to the metering device in distributed transformer substation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510393922.8A CN104991221B (en) | 2015-07-07 | 2015-07-07 | The device and detection method calibrated to the metering device in distributed transformer substation |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104991221A CN104991221A (en) | 2015-10-21 |
CN104991221B true CN104991221B (en) | 2018-01-30 |
Family
ID=54303057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510393922.8A Active CN104991221B (en) | 2015-07-07 | 2015-07-07 | The device and detection method calibrated to the metering device in distributed transformer substation |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104991221B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105842649A (en) * | 2016-03-25 | 2016-08-10 | 国家电网公司 | On-line detection system for secondary side power metering system of smart substation and detection 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 |
CN110146762A (en) * | 2019-06-05 | 2019-08-20 | 国网江苏省电力有限公司苏州供电分公司 | A kind of detachable loading tests device suitable for intelligent substation |
CN110940854B (en) * | 2019-11-14 | 2022-04-12 | 国网江西省电力有限公司电力科学研究院 | Alternating current synchronous electric energy metering system based on Beidou/GPS clock |
CN110736957B (en) * | 2019-12-12 | 2020-03-27 | 国网江西省电力有限公司电力科学研究院 | Online detection system and method for electric energy metering device based on clock synchronization |
CN111665377B (en) * | 2020-06-05 | 2023-05-05 | 国网福建省电力有限公司 | Remote phase-locked synchronous standard source |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102035261A (en) * | 2010-12-17 | 2011-04-27 | 清华大学 | Monitoring system for smart grid |
CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
CN104330765A (en) * | 2014-11-12 | 2015-02-04 | 成都天兴电气有限公司 | Satellite navigation system based electric-energy-meter field calibration device |
CN204705708U (en) * | 2015-07-07 | 2015-10-14 | 国家电网公司 | To the device that the measuring apparatus in distributed transformer substation is calibrated |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9330563B2 (en) * | 2013-02-12 | 2016-05-03 | Digimarc Corporation | Synchronized metrology in power generation and distribution networks |
-
2015
- 2015-07-07 CN CN201510393922.8A patent/CN104991221B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102035261A (en) * | 2010-12-17 | 2011-04-27 | 清华大学 | Monitoring system for smart grid |
CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
CN104330765A (en) * | 2014-11-12 | 2015-02-04 | 成都天兴电气有限公司 | Satellite navigation system based electric-energy-meter field calibration device |
CN204705708U (en) * | 2015-07-07 | 2015-10-14 | 国家电网公司 | To the device that the measuring apparatus in distributed transformer substation is calibrated |
Also Published As
Publication number | Publication date |
---|---|
CN104991221A (en) | 2015-10-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104991221B (en) | The device and detection method calibrated to the metering device in distributed transformer substation | |
CN101984538B (en) | Data synchronization processing method for electronic mutual inductor using Manchester encoding | |
CN101498775B (en) | Calibration apparatus for gate energy meter of digitized transforming plant | |
CN105203983A (en) | Flexible alternating current/direct current electronic transformer checking device based on mixed sampling | |
CN103575971B (en) | A kind of intelligent substation universal data collection method | |
CN104360298A (en) | Performance test system and method for merging unit tester | |
CN104092738A (en) | Long-distance nuclear phase system and method based on wireless Internet | |
CN205067713U (en) | Flexible alternating current -direct current electronic transformer calibration equipment based on mix sampling | |
CN204439821U (en) | A kind of numeral exports electronic transformer calibrator | |
CN101893695B (en) | Analog sampling and protocol generating devices | |
CN105548947B (en) | A kind of synchronous source tracing method of digitalized electrical energy meter and system | |
CN108287293A (en) | A kind of method and system directly acquiring fault traveling wave | |
CN202256590U (en) | Insulation on-line monitoring device for transformer bushing | |
CN110018435A (en) | Electronic mutual inductor calibration system and calibration method | |
CN204705708U (en) | To the device that the measuring apparatus in distributed transformer substation is calibrated | |
CN202815078U (en) | Current measuring device | |
CN202600133U (en) | Digital quantity input electric energy meter calibration system capable of supporting synchronous analog quantity source tracing | |
CN205121234U (en) | Real -time synchronization data acquisition device | |
CN201740861U (en) | Current transformer calibrator based on IEC 61850 standard | |
CN103036314A (en) | Inserted electricity parameter sampling realization device based on time-base signals of compass navigation satellite system and global position system (GPS) | |
CN102621376A (en) | Method for precisely and synchronously measuring multiple high and low-potential electric parameters and device | |
CN106125033B (en) | A kind of voltage and current synchronism classification error testing system | |
RU147247U1 (en) | MEASUREMENT DIGITAL FLOWS UNIT OF MEASUREMENT DATA | |
CN201788275U (en) | Analog sampling and protocol generating device | |
CN213715328U (en) | Big ground net ground connection impedance measurement device based on big dipper |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Bi Wei Inventor after: Guo Yu Inventor after: Wang Xueqiong Inventor after: Guo Zichun Inventor after: Shen Li Inventor after: Gan Yiyi Inventor after: Shu Kaiqi Inventor after: Liu Jianhua Inventor after: Li Fan Inventor after: Li Jun Inventor after: Shi Hong Inventor after: Fu Wei Inventor before: Shen Li Inventor before: Wang Sike Inventor before: Bi Wei Inventor before: Gan Yiyi Inventor before: Shu Kaiqi Inventor before: Li Jun Inventor before: Li Fan Inventor before: Guo Yu Inventor before: Liu Heng Inventor before: Zheng Xin |
|
GR01 | Patent grant | ||
GR01 | Patent grant |