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A method, system, equipment and medium for locating the position of power loss in power grid

A technology of power grid loss and positioning method, applied in design optimization/simulation, electrical digital data processing, computer-aided design, etc., can solve problems such as inability to automate power grids, and achieve the effect of improving profits

Active Publication Date: 2022-02-11
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the prior art cannot automatically and intelligently reduce the power loss of the power grid, the present invention proposes a method, system, equipment and medium for locating the power loss of the power grid

Method used

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  • A method, system, equipment and medium for locating the position of power loss in power grid
  • A method, system, equipment and medium for locating the position of power loss in power grid
  • A method, system, equipment and medium for locating the position of power loss in power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1. Equivalent model of power loss in 10kV distribution line

[0059] Step 1: Construct the equivalent model of power loss in normal 10kV distribution lines;

[0060] Step 2: Deduce the calculation formula of electrical parameters in the equivalent model;

[0061] 2. The principle of locating power loss point of 10kV distribution line

[0062] Step 3: Construct the equivalent model of power loss of 10kV distribution line with fault point A.

[0063] 3. Calculation of the voltage of each node of the 10kV distribution line additional grid

[0064] Step 4: Calculate the voltage U of each node of the normal power grid.

[0065] Step 5: Deduce the node voltage amplitude of the fault grid.

[0066] 4. Location calculation of power loss point of 10kV distribution line

[0067] Step 6: Locate the power loss fault point calculation.

Embodiment 2

[0069] Step 1: Construct the equivalent model of power loss in normal 10kV distribution lines.

[0070] To simplify the analysis, take a simple single-phase 10kV distribution line with only one load as an example, such as figure 1 As shown, the electrical components of the power grid are composed of power supply E, line impedance Z 1 and load impedance Z L constitute;

[0071] The power source E is the voltage corresponding to the 10kV line switch in the substation, that is, the measured voltage of the metering device corresponding to the 10kV line in the substation;

[0072] Line impedance Z 1 is the impedance value of the 10kV line, load impedance Z L is the load impedance of the user under the line.

[0073]Step 2: Deduce the calculation formula of electrical parameters in the equivalent model.

[0074] Step 21: Deduce the formula for calculating the line impedance value in the model.

[0075] Line impedance Z 1 is the impedance value of the 10kV line, according to ...

Embodiment 3

[0115] A power grid loss position positioning system, comprising:

[0116] Extraction module: used to extract the measured voltage, current and power factor modulus of each node metering device at 24 hours a day;

[0117] Normal voltage calculation module: used to calculate the voltage of each node in the normal power grid at each hour;

[0118] Fault voltage calculation module: used to calculate the voltage of each node in the fault grid at each hour;

[0119] Average voltage modulus calculation module: used to calculate the average voltage modulus of each node in the additional grid;

[0120] Positioning calculation module: used to locate the location of power loss.

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Abstract

The invention belongs to the field of electrical digital data processing, and specifically relates to a method, system, equipment and medium for locating the position of power grid loss electricity, which is characterized in that it includes the following steps: S1, extracting the measured voltage of each node metering device at 24 hours a day, Current and power factor modulus; S2, calculate the voltage of each node in the normal grid at each hour; S3, calculate the voltage of each node in the fault grid at each hour; S4, calculate the average voltage modulus of each node in the additional grid; S5 , Locate the location of power loss. The invention can accurately locate the power loss position of the power grid under the 10kV power distribution line, realize automatic and intelligent search for the power loss position, and effectively improve the profit of the power supply enterprise.

Description

technical field [0001] The invention belongs to the technical field of electrical digital data processing, and in particular relates to a method, system, equipment and medium for locating the position of power grid loss power. Background technique [0002] Power loss in the power grid, that is, the line loss caused by the error of the metering equipment and the line loss caused by mismanagement and mistakes, such as user electricity theft and metering device failure. From the perspective of management objects, controlling the "one end" of meters and guarding the "one end" of electricity theft investigation and punishment is the core of reducing power loss in the power grid. [0003] At present, from the point of view of reducing power loss in the power grid, one is "spreading the net widely" and the other is "non-intelligent", which greatly wastes the company's manpower and material resources, and cannot be automated and intelligent to reduce power loss in the power grid. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/18G06F30/20G06F111/10G06F113/04
CPCG06F30/18G06F30/20G06F2111/10G06F2113/04
Inventor 刘兆燕王登政李臻代志强陆鑫陈斌发李晖林凯吕阳李炳辉陈婧黄屏发
Owner STATE GRID BEIJING ELECTRIC POWER