Voltage sag comprehensive prevention and control method

A voltage sag, comprehensive prevention and control technology, applied in the direction of AC network voltage adjustment, power network operating system integration, information technology support systems, etc.

Active Publication Date: 2020-07-10
众诚开源电气科技(成都)有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive prevention and control method for voltage sags, which is used to solve the problem that the traditional voltage sag control method in the prior art is not suitable for the treatment of voltage sags in modern industrial parks

Method used

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Embodiment Construction

[0065] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] Such as figure 1 As shown, a method for comprehensive prevention and control of voltage sags includes the following steps,

[0067] S1. Collect initial data of modern industrial parks. On the one hand, control the transmission and distribution lines on the grid side to reduce the frequency of voltage sags caused by faults. On the other hand, adopt different performance and cost sag control equipment on the user side to mitigate Effects of voltage sags;

[0068]...

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Abstract

The invention belongs to the field of power system fault treatment, and particularly relates to a voltage sag comprehensive prevention and control method which comprises the following steps: collecting initial data of a modern industrial park; providing a voltage sag comprehensive prevention and treatment measure; modeling the cost of various voltage sag treatment devices in the user side; modeling the governance cost of the power transmission and distribution line in the power grid side; modeling the annual sag times caused by the power transmission and distribution line after the proposed voltage sag comprehensive prevention and control measure is implemented; carrying out quantitative modeling on economic losses caused by voltage sag before and after implementation of proposed voltage sag comprehensive prevention and control measures; determining an objective function and a constraint condition of a maximum net present value model of the voltage sag comprehensive prevention and control measure benefit; and optimizing and solving the objective function by using a particle swarm algorithm, quantitatively obtaining the equipment configuration condition of the comprehensive prevention and control measure, including which equipment is used, the installation position of the equipment and the parameters of the equipment, and quantitatively obtaining the equipment configuration result with the maximum benefit.

Description

technical field [0001] The invention belongs to the field of power system fault management, and specifically relates to a comprehensive prevention and control method for voltage sags. Background technique [0002] Voltage sag has become the most serious power quality problem faced by industrial users because of its frequency, unpredictability and harm to sensitive equipment. In order to meet the needs of industrial production, high-end manufacturing users in modern industrial parks use a large number of process controllers, frequency conversion speed control devices, DC motors, data processing equipment, etc., and the electrical equipment tends to be integrated and sophisticated. These sensitive devices are very sensitive to voltage sag (voltage sag / dip, the phenomenon that the root mean square value of power frequency voltage at a certain point in the power system suddenly drops to 0.1~0.9p.u., and returns to normal after a short duration of 10ms~1min). For example, in a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12H02J3/14
CPCH02J3/12H02J3/14Y02B70/3225Y04S20/222
Inventor 李青
Owner 众诚开源电气科技(成都)有限公司
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