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Medium-voltage power supply reliability effect evaluation method

A reliable, medium-voltage technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as inability to adjust and control the direction of power adjustment, and achieve simple and easy-to-understand evaluation results, reliable and accurate evaluation results. Effect

Pending Publication Date: 2021-11-05
赵永生 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing technology often just adds a voltage regulator in front of the electrical equipment to deal with the situation of power pollution
However, this processing method cannot adjust to the needs of electrical equipment in real time, nor can it allow power generation and power management units to grasp the direction of power adjustment in real time

Method used

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  • Medium-voltage power supply reliability effect evaluation method
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  • Medium-voltage power supply reliability effect evaluation method

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Embodiment Construction

[0065] A method for evaluating the reliability effect of medium-voltage power supply, comprising the following steps:

[0066] Step 1: Data Collection

[0067] For the power grid, the following parameters are collected: grid voltage u 1t , u 2t , u 3t , grid current I 1t , I 2t , I 3t , grid frequency f t , where u 1t , u 2t , u 3t Represents the three voltages of the three-phase alternating current, I 1t , I 2t , I 3t Represents the three currents of the three-phase alternating current, t is time, ie u 1t Indicates the voltage of the first phase at time t, u 2t Indicates the voltage of the second phase at time t, u 3t Indicates the voltage of the third phase at time t; I 1t Indicates the current of the first phase at time t, I 2t Indicates the current of the second phase at time t, I 3t Indicates the current of the third phase at time t; f t Indicates the frequency of the power grid at time t.

[0068] For each device in the grid, collect the following para...

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Abstract

The invention belongs to an evaluation method, and particularly relates to a medium-voltage power supply reliability effect evaluation method. The method comprises the following steps of: 1, collecting data; 2, adjusting power grid parameters; 3, synthesizing voltage and current; 4, carrying out curve fitting; 5, selecting a main curve; 6, normalizing the curve; 7, merging main parameter normalized curves; 8, solving a threshold range; and 9, evaluating. The effect evaluation method has the remarkable effects that the electricity utilization effect of each device in the power grid is evaluated, and then the medium-voltage electricity reliability is evaluated in reverse from the electricity utilization effect. In the execution process of the method, main performance parameters of the electric equipment are selected, so that the evaluation result is directly linked with the effect of the electric equipment, the evaluation result is reliable and accurate, multi-dimensional evaluation is changed into simple numerical value comparison through main curve selection, normalization and curve combination, and it is guaranteed that the evaluation result is simple and easy to understand.

Description

technical field [0001] The invention belongs to an evaluation method, in particular to a method for evaluating the reliability effect of a medium-voltage power supply. Background technique [0002] The power grid is an important form of energy supply in modern society. Whether industrial or civil, many devices are highly dependent on power from the power grid. [0003] However, due to systemic reasons, the effect of grid power supply cannot meet the needs of all electrical appliances. First of all, in terms of the form of power supply, grid power supply is a form of energy supply for centralized power generation, and then power transmission through the grid, which is used by end users. In order to ensure the efficiency of power supply, the power generation devices of the power grid are often set up in a centralized manner, using coal-fired, hydraulic, nuclear, wind, solar or other power generation methods. Also based on the consideration of efficiency, the transmission pro...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 赵永生谈军郝雨余小飞宋光明程辰吕朋朋罗学龙
Owner 赵永生
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