Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric energy state evaluation index selection method

A state evaluation and index technology, which is applied in the field of power state evaluation index selection, can solve the problems that the evaluation index cannot be real-time and power grid evaluation.

Pending Publication Date: 2021-04-06
国网新疆电力有限公司营销服务中心 +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the rigid and fixed evaluation indicators in the existing technology cannot evaluate the power grid in real time, it is necessary to establish a method for selecting power state evaluation indicators

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric energy state evaluation index selection method
  • Electric energy state evaluation index selection method
  • Electric energy state evaluation index selection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0101] A method for selecting an electric energy state evaluation index, comprising the following steps:

[0102] Step 1: Sampling

[0103] Sampling parameters include: voltage deviation, frequency deviation, three-phase unbalance, harmonic proportion, voltage sag, and line loss rate.

[0104] in,

[0105] Voltage deviation: the difference between the actual voltage of each point and the nominal voltage of the system, expressed in percentage, that is

[0106]

[0107] where U is the actual voltage, U N is the nominal voltage of the system, and ΔU is the voltage deviation. The above formula is only a calculation formula of the voltage deviation. When multiple sets of sampling are required, each voltage deviation is calculated using the above formula. For the three-phase voltage, take the average value of the three-phase voltage as the actual voltage.

[0108] Frequency deviation: the difference between the actual frequency and the nominal frequency, that is

[0109] Δf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to an index selection determination method, and particularly relates to an electric energy state evaluation index selection method. The method comprises the following steps: 1, sampling; carrying out basic parameter sampling; 2, normalizing the data; performing data normalization on the sampling parameters; 3, calculating a compensation value; calculating three compensation values; 4, calculating a weight; calculating weights of different parameters; 5, revising the weight; revising the weight; 6, selecting parameters; and performing parameter selection according to the corrected weight Wj. The method has the remarkable effects that (1) a plurality of specific indexes which greatly influence the operation of the power grid are selected as evaluation basic indexes; (2) the basic weight of each index is calculated through the mutual relation of the parameters; and (3) by correcting the basic weight, the index can reflect the operation state of the existing power grid to the greatest extent.

Description

technical field [0001] The invention belongs to an index selection and determination method, in particular to an electric energy state evaluation index selection method. Background technique [0002] Power grid is one of the essential infrastructures for production and life in modern society, and the quality of power grid operation directly affects the quality of production and life. There are many dimensions of power grid evaluation in the prior art, such as the economic evaluation method of power grid establishment, the quality evaluation method of power grid operation, the evaluation method of power grid operation efficiency, and so on. [0003] What these evaluation methods have in common is that they evaluate the power grid with certain index dimensions and certain weights. However, grids are not static in operation. With the change of seasons, residential electricity consumption and industrial electricity consumption are very different; affected by the economic cycle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06F17/18G06Q50/06
CPCG06Q10/06393G06F17/18G06Q50/06Y02P90/82
Inventor 刘超王璐安运志袁航段志尚
Owner 国网新疆电力有限公司营销服务中心