CN110729732A - Method for constructing unified measurement model of power distribution network - Google Patents
Method for constructing unified measurement model of power distribution network Download PDFInfo
- Publication number
- CN110729732A CN110729732A CN201911257368.5A CN201911257368A CN110729732A CN 110729732 A CN110729732 A CN 110729732A CN 201911257368 A CN201911257368 A CN 201911257368A CN 110729732 A CN110729732 A CN 110729732A
- Authority
- CN
- China
- Prior art keywords
- information
- model
- measurement model
- measurement data
- measurement
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention provides a method for constructing a power distribution network unified measurement model, which is characterized by collecting surrounding environment information of a transformer substation, including lightning stroke information, rainfall information, wind speed information, temperature and humidity information and the like, constructing a first measurement model as a carrier of the environment information, simultaneously collecting equipment operation data of the transformer substation, including transformer current and voltage information, bus side voltage and current information and intelligent electric meter side voltage and current information, constructing a second measurement model as a carrier of the transformer substation equipment operation information, and superposing the first measurement model and the second measurement model after time synchronization to form the unified measurement model, so that the transformer substation equipment operation information under the action of environmental factors can be obtained from the unified measurement model at any time point, the transformer substation operation state can be known in real time, and risk assessment, early warning and the like can be realized.
Description
Technical Field
The invention relates to the technical field of power distribution network monitoring, in particular to a method for constructing a unified measurement model of a power distribution network.
Background
The smart grid is a self-healing grid which takes a power system as an object and combines a novel control technology, an information technology and a management technology to realize intelligent communication from all links from power transmission and distribution to users, and can scientifically and systematically optimize power production, transmission and use.
Disclosure of Invention
Therefore, the invention provides a method for constructing a unified measurement model of a power distribution network, which is used for carrying out unified management on the operation state of a transformer substation after the unified measurement model is constructed by carrying out data acquisition on the environment around the transformer substation and acquiring the equipment operation data of the transformer substation.
The technical scheme of the invention is realized as follows:
a method for constructing a unified measurement model of a power distribution network comprises the following steps:
step S1, collecting lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
step S2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
step S3, constructing a second measurement model, and inputting equipment operation measurement data;
step S4, a unified metrology model is constructed according to the first metrology model and the second metrology model.
Preferably, the step S1 of collecting the lightning strike measurement data specifically includes:
s11, collecting the first lightning stroke frequency by using a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer to induce a ground wire;
and step S13, obtaining the total lightning stroke times according to the first lightning stroke times and the second lightning stroke times.
Preferably, the environmental monitoring measurement data of step S1 includes wind speed information, rainfall information, temperature information, and humidity information.
Preferably, the specific step of step S2 is:
step S21, constructing a surrounding environment model;
step S22, mapping the total lightning stroke times into the surrounding environment model according to the occurrence time;
step S23, mapping the rainfall information to the surrounding environment model in the form of rainfall according to the occurrence time of the rainfall information;
and step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into the surrounding environment model according to the occurrence time of the values.
Preferably, the step S1 of collecting the device operation measurement data specifically includes: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of an intelligent ammeter side.
Preferably, the step S3 specifically includes:
s31, constructing a transformer substation model consisting of a transformer, a bus and an intelligent electric meter;
step S32, mapping the voltage and current information of the transformer to the transformer of the transformer substation model;
step S33, mapping the voltage and current information of the bus side to the bus of the transformer substation model;
and step S34, mapping the voltage and current information of the intelligent ammeter side to the intelligent ammeter of the transformer substation model.
Preferably, the specific step of step S4 is:
step S41, time synchronization processing is carried out on the first measurement model and the second measurement model;
and step S42, using the second measurement model as a bottom layer, and superposing the first measurement model on the second measurement model to form a unified measurement model.
Preferably, the method further includes step S5 of inputting time information into the unified measurement model, and the unified measurement model visually displays the corresponding lightning strike measurement data, the environmental monitoring measurement data, and the equipment operation measurement data.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for constructing a power distribution network unified measurement model, which collects environmental information and equipment operation information in the operation process of a transformer substation, wherein the environmental information comprises lightning stroke measurement data and environmental monitoring measurement data, and the collected environmental information is input into the constructed first measurement model to construct an environmental model of the transformer substation, meanwhile, a second measurement model is constructed, the operation measurement data of the equipment is input into the second measurement model, and a unified measurement model can be obtained by combining the first measurement model and the second measurement model, thereby obtaining the equipment running states of the transformer substation under different environmental information from the unified measurement model, facilitating the unified management of the running states of the power grid, and therefore, the power grid state conditions at each stage can be known in the unified measurement model, and functions of risk assessment, early warning and the like are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a method for constructing a unified measurement model of a power distribution network according to the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1, the method for constructing a unified measurement model of a power distribution network provided by the invention comprises the following steps:
step S1, collecting lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
step S2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
step S3, constructing a second measurement model, and inputting equipment operation measurement data;
step S4, a unified metrology model is constructed according to the first metrology model and the second metrology model.
The method for constructing the power distribution network unified measurement model is applied to intelligent management of the power distribution network, before the measurement model is constructed, environment information and equipment information are collected in advance, different measurement models are constructed for the environment information and the equipment information respectively, then the two measurement models are combined to obtain the unified measurement model, so that the operation information of power grid equipment in different states can be known according to the unified measurement model, the operation state of a power grid can be analyzed, and the operation state of a transformer substation can be managed in a unified mode conveniently.
The method comprises the steps that collected environmental information comprises lightning stroke measurement data and environmental monitoring measurement data, the lightning stroke measurement data are used for recording lightning stroke times of a transformer substation in corresponding time, the environmental monitoring measurement data are used for collecting data of nearby environments and are used for subsequently judging the operation states of power grid equipment under different environmental information, a first constructed measurement model comprises the lightning stroke measurement data and the environmental monitoring measurement data, the first measurement model is equivalent to an environmental layer, a second measurement model comprises the equipment operation measurement data and is equivalent to an equipment operation layer, a unified measurement model can be obtained after the equipment operation layer and the environmental layer are combined, equipment operation state parameters under different environments and lightning stroke conditions can be obtained from the unified measurement model, and functions of letter sealing evaluation, early warning and the like can be achieved.
Preferably, the step S1 of collecting the lightning strike measurement data specifically includes:
s11, collecting the first lightning stroke frequency by using a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer to induce a ground wire;
and step S13, obtaining the total lightning stroke times according to the first lightning stroke times and the second lightning stroke times.
The lightning stroke measurement data of the embodiment adopts a double-acquisition mode, the first lightning stroke frequency is acquired by adopting a photoelectric tube, when a lightning stroke occurs, the photoelectric tube generates current due to a photoelectric effect, so that the first lightning stroke frequency is increased by one, the second lightning stroke frequency acquired by a current transformer adopts a current induction principle, when the lightning stroke occurs, lightning is introduced into the ground from a grounding wire of a lightning conductor, current is induced on the grounding wire induced by the current transformer after passing through the grounding wire, so that the second lightning stroke frequency is increased by one, errors of lightning stroke frequency detection can be reduced by integrating the first lightning stroke frequency and the second lightning stroke frequency, and the embodiment adopts the average value of the first lightning stroke frequency and the second lightning stroke frequency for acquiring the total lightning stroke frequency and then rounds the average value.
Preferably, the environmental monitoring measurement data of step S1 includes wind speed information, rainfall information, temperature information, and humidity information.
The wind speed information, the rainfall information, the temperature information and the humidity information are collected, so that the environment around the transformer substation can be completely simulated.
Preferably, the specific step of step S2 is:
step S21, constructing a surrounding environment model;
step S22, mapping the total lightning stroke times into the surrounding environment model according to the occurrence time;
step S23, mapping the rainfall information to the surrounding environment model in the form of rainfall according to the occurrence time of the rainfall information;
and step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into the surrounding environment model according to the occurrence time of the values.
By constructing the surrounding environment model and mapping all the collected environment information into the surrounding environment model, the environment information can be checked at any time in the environment model, wherein each environment information is mapped correspondingly according to the collected time, so that the corresponding lightning stroke information, rainfall information, wind speed information, temperature information and humidity information in any time point or time period can be known.
Preferably, the step S1 of collecting the device operation measurement data specifically includes: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of an intelligent ammeter side.
The equipment that will gather includes transformer, generating line side and intelligent ammeter side, through the voltage current information of gathering above-mentioned three parts, can know the change of electric energy in the transportation.
Preferably, the step S3 specifically includes:
s31, constructing a transformer substation model consisting of a transformer, a bus and an intelligent electric meter;
step S32, mapping the voltage and current information of the transformer to the transformer of the transformer substation model;
step S33, mapping the voltage and current information of the bus side to the bus of the transformer substation model;
and step S34, mapping the voltage and current information of the intelligent ammeter side to the intelligent ammeter of the transformer substation model.
The method comprises the steps of constructing corresponding transformers, buses and intelligent electric meters in a transformer substation model, mapping acquired voltage and current information into the transformer substation model correspondingly, judging the operation state of the transformer substation through relevant information of the transformer, the buses and the intelligent electric meters, and checking the operation state of the transformer substation in each time point after mapping the relevant voltage and current information into the transformer substation model.
Preferably, the specific step of step S4 is:
step S41, time synchronization processing is carried out on the first measurement model and the second measurement model;
and step S42, using the second measurement model as a bottom layer, and superposing the first measurement model on the second measurement model to form a unified measurement model.
Specifically, after the second measurement model is used as a bottom layer, the first measurement model is superposed to the second measurement model, and a unified measurement model is formed, wherein time synchronization processing is performed on the first measurement model and the second measurement model before superposition, so that the two models are consistent in time, after the unified measurement model is obtained, when a certain time node is obtained from the unified measurement model, the running state of the transformer substation under the influence of environmental factors is obtained, so that a worker can be helped to know the running state of the transformer substation, and risk assessment, lightning early warning and the like are performed on the transformer substation.
Preferably, the method further includes step S5 of inputting time information into the unified measurement model, and the unified measurement model visually displays the corresponding lightning strike measurement data, the environmental monitoring measurement data, and the equipment operation measurement data.
Specifically, the unified measurement model can display corresponding data in a visual mode, including lightning stroke information, rainfall, wind speed, temperature and humidity, transformer voltage and current, bus side voltage and current and intelligent ammeter side voltage, so that a worker can know environmental information and equipment operation information in corresponding time points in real time.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A method for constructing a unified measurement model of a power distribution network is characterized by comprising the following steps:
step S1, collecting lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
step S2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
step S3, constructing a second measurement model, and inputting equipment operation measurement data;
step S4, a unified metrology model is constructed according to the first metrology model and the second metrology model.
2. The method according to claim 1, wherein the step S1 of collecting the lightning strike measurement data comprises the following steps:
s11, collecting the first lightning stroke frequency by using a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer to induce a ground wire;
and step S13, obtaining the total lightning stroke times according to the first lightning stroke times and the second lightning stroke times.
3. The method of claim 2, wherein the environmental monitoring measurement data of step S1 includes wind speed information, rainfall information, temperature information and humidity information.
4. The method according to claim 3, wherein the step S2 includes the following steps:
step S21, constructing a surrounding environment model;
step S22, mapping the total lightning stroke times into the surrounding environment model according to the occurrence time;
step S23, mapping the rainfall information to the surrounding environment model in the form of rainfall according to the occurrence time of the rainfall information;
and step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into the surrounding environment model according to the occurrence time of the values.
5. The method according to claim 1, wherein the step S1 of collecting the device operation measurement data specifically comprises: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of an intelligent ammeter side.
6. The method according to claim 5, wherein the step S3 includes the following steps:
s31, constructing a transformer substation model consisting of a transformer, a bus and an intelligent electric meter;
step S32, mapping the voltage and current information of the transformer to the transformer of the transformer substation model;
step S33, mapping the voltage and current information of the bus side to the bus of the transformer substation model;
and step S34, mapping the voltage and current information of the intelligent ammeter side to the intelligent ammeter of the transformer substation model.
7. The method according to claim 6, wherein the step S4 includes the following steps:
step S41, time synchronization processing is carried out on the first measurement model and the second measurement model;
and step S42, using the second measurement model as a bottom layer, and superposing the first measurement model on the second measurement model to form a unified measurement model.
8. The method of claim 1, further comprising step S5 of inputting time information into the unified measurement model, wherein the unified measurement model visually displays the corresponding lightning strike measurement data, the environmental monitoring measurement data, and the equipment operation measurement data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257368.5A CN110729732B (en) | 2019-12-10 | 2019-12-10 | Method for constructing unified measurement model of power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257368.5A CN110729732B (en) | 2019-12-10 | 2019-12-10 | Method for constructing unified measurement model of power distribution network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110729732A true CN110729732A (en) | 2020-01-24 |
| CN110729732B CN110729732B (en) | 2023-08-29 |
Family
ID=69225946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911257368.5A Active CN110729732B (en) | 2019-12-10 | 2019-12-10 | Method for constructing unified measurement model of power distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110729732B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112182073A (en) * | 2020-09-27 | 2021-01-05 | 珠海许继芝电网自动化有限公司 | Electric power measurement data display method and system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004117223A (en) * | 2002-09-27 | 2004-04-15 | Techno Success Kk | Transmission line monitoring system and abnormality detecting device used for the same |
| CN1982898A (en) * | 2005-12-15 | 2007-06-20 | 旭电机株式会社 | System for gathering thunderbolt information |
| CN103795052A (en) * | 2014-01-20 | 2014-05-14 | 嘉兴市国科京禾电子有限公司 | Data signal line RS-485 intelligent anti-lighting device and method |
| CN104134320A (en) * | 2014-03-27 | 2014-11-05 | 深圳市科威电子测试有限公司 | Lightning protection environment online monitoring alarm network system |
| CN204732883U (en) * | 2015-06-18 | 2015-10-28 | 合肥华义电气科技有限公司 | Low-pressure reactive compensation equipment |
| CN106253979A (en) * | 2016-08-17 | 2016-12-21 | 山东理工大学 | A kind of optical signal linear transmission system and Active Electronic Current Transformer |
| CN106771772A (en) * | 2017-01-16 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of arrester device for detecting performance with remote interface |
| CN206773097U (en) * | 2017-04-24 | 2017-12-19 | 上海电科臻和智能科技有限公司 | A kind of intelligent lightning protecting case based on arm processor |
| CN108508328A (en) * | 2018-06-28 | 2018-09-07 | 武汉智网兴电科技开发有限公司 | A kind of transmission line lightning stroke intelligent fault monitor supervision platform |
| CN209198531U (en) * | 2018-02-27 | 2019-08-02 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
-
2019
- 2019-12-10 CN CN201911257368.5A patent/CN110729732B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004117223A (en) * | 2002-09-27 | 2004-04-15 | Techno Success Kk | Transmission line monitoring system and abnormality detecting device used for the same |
| CN1982898A (en) * | 2005-12-15 | 2007-06-20 | 旭电机株式会社 | System for gathering thunderbolt information |
| CN103795052A (en) * | 2014-01-20 | 2014-05-14 | 嘉兴市国科京禾电子有限公司 | Data signal line RS-485 intelligent anti-lighting device and method |
| CN104134320A (en) * | 2014-03-27 | 2014-11-05 | 深圳市科威电子测试有限公司 | Lightning protection environment online monitoring alarm network system |
| CN204732883U (en) * | 2015-06-18 | 2015-10-28 | 合肥华义电气科技有限公司 | Low-pressure reactive compensation equipment |
| CN106253979A (en) * | 2016-08-17 | 2016-12-21 | 山东理工大学 | A kind of optical signal linear transmission system and Active Electronic Current Transformer |
| CN106771772A (en) * | 2017-01-16 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of arrester device for detecting performance with remote interface |
| CN206773097U (en) * | 2017-04-24 | 2017-12-19 | 上海电科臻和智能科技有限公司 | A kind of intelligent lightning protecting case based on arm processor |
| CN209198531U (en) * | 2018-02-27 | 2019-08-02 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
| CN108508328A (en) * | 2018-06-28 | 2018-09-07 | 武汉智网兴电科技开发有限公司 | A kind of transmission line lightning stroke intelligent fault monitor supervision platform |
Non-Patent Citations (1)
| Title |
|---|
| 周妮娜， 祝祥林: "避雷器在线监测系统的设计", 《电瓷避雷器》, no. 251, pages 112 - 116 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112182073A (en) * | 2020-09-27 | 2021-01-05 | 珠海许继芝电网自动化有限公司 | Electric power measurement data display method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110729732B (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102221651B (en) | Fault on-line diagnosis and early warning method of flameproof dry-type transformer for mine | |
| EP3757583B1 (en) | System for determining electric parameters of an electric power grid | |
| CN107742922A (en) | A kind of generalized information system and method with long-range self-diagnostic function | |
| CN102510127A (en) | Method for unifying models of on-line monitored first and secondary equipment of power grid | |
| CN107886171B (en) | PMU data-based breaker state online diagnosis method and system | |
| CN109270482B (en) | Online evaluation method for metering accuracy of voltage transformer and terminal equipment | |
| CN105098763A (en) | Transient voltage stable on-line assessment method based on WAMS and EMS | |
| CN106771448A (en) | A kind of electric energy meter shunting anti-electricity-theft early warning analysis method of analysis | |
| CN112700032A (en) | Fault prediction system and method for low-voltage direct-current power distribution and utilization system | |
| CN108344917A (en) | The cross interconnected cable on-line fault diagnosis method of 110kV crosslinked polyethylenes based on method of loci | |
| CN112350442A (en) | Hydropower house electrical equipment insulation state monitoring system based on multiple sensing terminals | |
| CN204064351U (en) | A kind of monitoring diagnosis device of power transformer | |
| CN205720417U (en) | A kind of triple channel contactless below 1000V voltage measuring apparatus | |
| CN110729732B (en) | Method for constructing unified measurement model of power distribution network | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN104215279A (en) | Online environment monitoring system and environment monitoring method | |
| CN110750500A (en) | Method and system for checking CCD (Charge coupled device) file and SCD (substation configuration description) file of intelligent substation | |
| CN113049914B (en) | Power transmission line fault diagnosis method and system, electronic equipment and storage medium | |
| CN205176158U (en) | Electric capacity type current transformer on -line measuring device | |
| GB2576605A (en) | System for determining electric parameters of an electric power grid | |
| Nalinaksh et al. | An Internet of Things solution for real-time identification of electricity theft and power outrages caused by fault in distribution systems (converting existing electrical infrastructure of third world countries to Smart Grids) | |
| CN104898082B (en) | A kind of evaluation method of voltage transformer operation | |
| CN102496882A (en) | Acquisition system and acquisition method for monitoring point foreground of substation chart | |
| CN204389604U (en) | The network tester of intelligent substation Small Electric Current Earthing And Routing Device | |
| CN103576020A (en) | Power quality monitoring system based on network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |