Line-loss actual-measurement and positioning method based on high-voltage electric energy meter and system thereof

A technology of high-voltage electric energy and positioning method, which is applied in the direction of electrical components, circuit devices, etc., can solve the problems that theft and leakage cannot be found in time, the loss of transformers cannot be deducted, the investment in equipment and the construction amount are large, and the phenomenon of electricity leakage and leakage can be reduced. Measure errors, improve the level of line loss management, and eliminate the effects of abnormal fault points

Inactive Publication Date: 2012-06-13
SHANDONG ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Method 2 involves a large amount of equipment investment and construction, and the accuracy of its statistics is also easily affected by problems such as load transfer and the error of the metering system when increasing or decreasing capacity. The error of the acquisition device and i

Method used

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  • Line-loss actual-measurement and positioning method based on high-voltage electric energy meter and system thereof
  • Line-loss actual-measurement and positioning method based on high-voltage electric energy meter and system thereof
  • Line-loss actual-measurement and positioning method based on high-voltage electric energy meter and system thereof

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Experimental program
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Effect test

Embodiment 1

[0032] like Figure 1-Figure 3 As shown, the master station, the operation terminal and the sensor-type high-voltage electric energy meter form a power data cloud system through the public network / ad hoc network; the master station is equipped with a communication module, a data acquisition unit and a management platform composed of a server, a software system and a front-end machine , the output end of the communication module is connected to the input end of the data acquisition unit, and the output end of the data acquisition unit is connected to the server; in the total loop point, each branch point, each associated load point and each A sensor-type high-voltage electric energy meter set on a single-phase terminal point, the sensor-type high-voltage electric energy meter at least includes an electrically connected high-voltage voltage sampling circuit, high-voltage current sampling circuit, source circuit, voltage stabilization unit, data processing and measurement unit, di...

Embodiment 2

[0044] On the basis of Embodiment 1, the master station collects the electric energy data of each sensor-type high-voltage electric energy meter through the data acquisition unit, and the master station sends control commands to each sensor-type high-voltage electric energy meter through the communication module, and conducts the control on each sensor-type high-voltage electric energy meter Start, capture, store, upload, clear, debug or shut down motion controls. Unified deployment action, you can send commands from the host to control each sensor-type high-voltage electric energy meter, start working when the line loss is measured, and turn off the rest of the time to further reduce energy consumption.

Embodiment 3

[0046] On the basis of Embodiment 1, the method of locating the abnormal loss point in step 3 can be a common prior art, or it can use the electric energy data on each level of branch lines to calculate the line loss rate between adjacent two levels , the line loss rate exceeds the reasonable normal value range, that is, it is judged that there is an abnormal loss point, and the line loss rate of the branch line of this level and the branch line of the next level is calculated in turn, and the branch lines of each level are searched until the last level of single-phase low-voltage For the single-phase terminal point of the subscriber line, determine the branch line where the abnormal loss point is located, check and eliminate the abnormal loss point.

[0047] Due to the characteristics of the sensor-type high-voltage electric energy meter itself, it can collect low-voltage single-phase electric energy. The abnormal loss point can be grounding, breakdown fault point, or electri...

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Abstract

A line-loss actual-measurement and positioning method based on a high-voltage electric energy meter and a system thereof belong to an intelligent grid power distribution automation field. The method and the system of the invention are characterized in that: sensor-type high-voltage electric energy meters, which are arranged on total loop points, each shunt point, each associated load point and each single-phase end point, use time synchronization technology to collect power consumption; a public network/ an ad hoc network is used to form an electric quantity data cloud systems; the collected data is calculated through a main station and the data is controlled and displayed through an operation end. Therefore, the following advantages can be realized that: line-loss actual-measurement of the line with 6 kV-35kV or a higher voltage grade can be realized; abnormal point positioning can be achieved; electric energy can be directly read, calculated and output; calculation does not substitute a resistance; line loss situation of a distribution line and changes can be real-timely and accurately grasped and an error is small; an application scope is large; fault points can be eliminated; a line loss management level can be substantially increased; management line loss can be reduced; a phenomenon of theft and leakage of electrical energy and measurement errors can be reduced; investment and construction are less, energy consumption is less and economic returns can be improved.

Description

technical field [0001] The invention belongs to the technical field of smart grid power distribution automation, and specifically relates to a method for measuring and locating line loss based on a high-voltage electric energy meter, and a system for realizing the method. Background technique [0002] The line loss rate is a comprehensive technical and economic indicator of the power system and an important economic indicator of the power sector. The level of line loss rate not only reflects the structural status of a power network and the quality of operation and management, but also reflects the level of technical management of a power sector. Accurate analysis of line loss data, line loss classification, accurate location of line loss points, different types of loss, and distinguishing between normal loss, abnormal loss, and power theft are very important for energy-saving work in power systems. The State Grid Corporation of China attaches great importance to the managem...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 王志伟王运全陈伟斌荣博徐文超杨君
Owner SHANDONG ELECTRIC POWER RES INST
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