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Fault power remedy method and system

A power and fault technology, which is applied in the fault power recovery method and system field, can solve the problems of cumbersome formula steps, high error rate, and low work efficiency, and achieve the effects of avoiding calculation errors, reducing error rates, and improving work efficiency

Active Publication Date: 2018-04-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and system for recovering fault power to solve the problem that in the prior art, due to the cumbersome formula steps, the proportion of personnel who can master metering and calculation proficiently is small, and in order to ensure the accuracy of calculation, often It needs to be calculated at least twice, resulting in an increase in the workload of the staff, low work efficiency, and a high error rate

Method used

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  • Fault power remedy method and system

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Embodiment 1

[0038] refer to figure 1 , figure 1 It shows the implementation process of the method for recovering fault power provided by Embodiment 1 of the present invention. The subject of execution of the process in this embodiment may be a terminal device, and the process is described in detail as follows:

[0039] S101: When a fault is detected in the three-phase three-wire metering circuit, acquire a first power factor of the three-phase three-wire metering circuit, and calculate a first power factor angle according to the first power factor.

[0040] Among them, faults include loss of pressure and cut-off.

[0041] When a fault occurs in the three-phase three-wire metering circuit, obtain the first power factor cosφ of the three-phase three-wire metering circuit 1 , calculated according to the first power factor to obtain the first power factor angle φ 1 , the calculation formula is: φ 1 = arc cos φ 1 .

[0042] S102: Obtain the phase A current of the three-phase three-wire m...

Embodiment 2

[0056] refer to figure 2 , figure 2 It shows the implementation flow of the method for recovering fault power provided by Embodiment 2 of the present invention. On the basis of the foregoing embodiments, the embodiments of the present invention are described in detail as follows:

[0057] S201: When a fault is detected in the three-phase four-wire metering circuit, acquire a second power factor of the three-phase four-wire metering circuit, and calculate a second power factor angle according to the second power factor.

[0058] Among them, faults include loss of pressure and cut-off.

[0059] When a fault occurs in the three-phase four-wire metering circuit, obtain the second power factor cosφ of the three-phase four-wire metering circuit 2 , calculated according to the second power factor to obtain the second power factor angle φ 2 , the calculation formula is: φ 2 = arc cos φ 2 .

[0060] S202: Obtain phase A current of the three-phase four-wire metering circuit, ph...

Embodiment 3

[0070] refer to image 3 , image 3 It shows the implementation process of the method for recovering fault power provided by the third embodiment of the present invention. On the basis of the foregoing embodiments, the embodiments of the present invention are described in detail as follows:

[0071] S301: Obtain the line voltage between the first element and the second element of the three-phase three-wire metering circuit and the phase angle of the first element current, the line voltage between the third element and the second element and the phase angle of the first element current, According to the line voltage between the first element and the second element and the phase angle of the first element current, the line voltage between the third element and the second element and the phase angle of the first element current, the first element and the second element are calculated. The phase angle of the line voltage between the elements and the line voltage between the thir...

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Abstract

The invention, which is applicable to the field of power metering technology, discloses a fault power remedy method and system. The method includes: when a fault is detected to occur at a three-phasethree-wire metering loop, a first power factor, an A-phase current, a C-phase current, a line voltage between the A phase and B phase, a line voltage between the B phase and C phase, a bottom value inthe presence of the fault, a bottom value in a fault recovery state, and a multiplying power of the three-phase three-wire metering loop are obtained; on the basis of the obtained parameters, three-phase three-wire fault remedy power is calculated; and the three-phase three-wire fault remedy power sent to a user needing to make a supplementary payment. Therefore, problems of heavy work load of the staff, low working efficiency, and high error rate are solved; the three-phase three-wire fault remedy power can be obtained quickly and accurately; the working efficiency is improved; and no manualcalculation is needed; and calculation errors caused by human factors are avoided and the error rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric power metering, and in particular relates to a method and a system for recovering fault electric quantity. Background technique [0002] The daily work of the marketing metering major often involves metering calculations, including derivation and calculation of wrong wiring, calculation of the flashing interval of the pulse light of the meter, etc., especially when the metering circuit of the line fails, it is necessary to calculate the fault recovery power of the line. [0003] At present, the calculation of the fault recovery power of the line is usually calculated step by step by the staff according to the formula. However, due to the cumbersome formula steps, the proportion of personnel who can master the measurement and calculation is a small number, and in order to ensure the accuracy of the calculation, it is often necessary to calculate at least twice, resulting in an increase in the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/17
CPCG01R11/17
Inventor 孟凡杰
Owner STATE GRID CORP OF CHINA
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