Park-level voltage sag hierarchical management system, method and terminal equipment

A voltage sag and voltage technology, which is applied to the integration of power network operating system, information technology support system, AC network voltage adjustment, etc., can solve the problem of poor coordination between switch switching and sag compensation device, and control the effect of voltage sag Poor problems, to achieve the effects of saving governance costs, shortening the duration of sags, and lowering requirements

Active Publication Date: 2021-08-24
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a park-level voltage sag management system, method, and terminal equipment, which are used to solve the coordination between switch switching and sag compensation devices used for voltage sag control in existing power parks Poor cooperation leads to technical problems of poor control of voltage sag

Method used

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  • Park-level voltage sag hierarchical management system, method and terminal equipment
  • Park-level voltage sag hierarchical management system, method and terminal equipment
  • Park-level voltage sag hierarchical management system, method and terminal equipment

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Embodiment 1

[0060] figure 1 It is a framework diagram of the park-level voltage sag hierarchical management system described in the embodiment of the present invention, figure 2 It is a frame diagram of the switching device of the park-level voltage sag management system according to the embodiment of the present invention.

[0061] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a park-level voltage sag hierarchical management system, including a switch device 10, a first power source 1, a second power source 2, a first-type sensitive user 30, a second-type sensitive user 40 and a voltage and current sampling device; the first power supply 1 is connected to the first type of sensitive user 30 through the switch device 10, and the second power supply 2 is connected to the second type of sensitive user 40 through the switch device 10;

[0062] The switch device 10 is used to switch the power supply circuit between the first power source 1 and t...

Embodiment 2

[0075] image 3 It is a flow chart of the steps of the park-level voltage sag management method according to the embodiment of the present invention, Figure 4 It is a flow chart of the coordinated control of the switching device and the compensation device of the park-level voltage sag management method according to the embodiment of the present invention.

[0076] Such as image 3 and Figure 4 As shown, the embodiment of the present invention provides a park-level voltage sag hierarchical management system, including the following steps:

[0077] Step S1. Obtain the voltage value of the park-level power system. If the voltage value of the park-level power system is not greater than the voltage threshold, start the compensation device of the uninterruptible power supply or dynamic voltage restorer in the above-mentioned park-level voltage sag hierarchical management system ;

[0078] Step S2. Detecting the first voltage output by the first power supply and the second vol...

Embodiment 3

[0111] The embodiment of the present invention also provides a computer-readable storage medium, the computer storage medium is used to store computer instructions, and when it is run on a computer, the computer executes the above-mentioned layered and hierarchical control method for park-level voltage sags.

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Abstract

The embodiment of the present invention relates to a park-level voltage sag hierarchical management system, method, and terminal equipment. According to the voltage tolerance of sensitive users, they are divided into the first type of sensitive users and the second type of sensitive users. The voltage sag of sensitive users is managed by a switch device, and the voltage sag of the second type of sensitive users is managed by a compensation device, and the second type of sensitive users is divided into three levels of sensitive users according to the voltage sag amplitude tolerance According to different levels of sensitive users, different compensation devices are selected to gently compensate the voltage of sensitive users; the system also uses the switching on or off of the switch in the switching device to achieve fast switching, which solves the problem of fast switching between dual power sources, and also It solves the technical problem of poor coordination and cooperation between the switch switching and the sag compensation device used for voltage sag control in the existing power park, resulting in poor control of voltage sag.

Description

technical field [0001] The present invention relates to the technical field of power quality, in particular to a park-level voltage sag management system, method and terminal equipment. Background technique [0002] With the rapid development of high-tech industries and the use of computer management and automatic control methods in traditional industries and modern businesses, the proportion of loads sensitive to power supply reliability and power quality is increasing, and more stringent requirements are put forward for power supply quality. Require. At present, a high-quality power park is used as an effective solution to the quality of power supply. The high-quality power park concentrates various sensitive loads within a certain range, and can provide high-quality regional power supply for various power quality problems, and the most common The most serious power quality problem is voltage sag. [0003] Voltage sag, also known as voltage sag, voltage sag or voltage sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14
CPCH02J3/14H02J2310/60Y02B70/3225Y04S20/222
Inventor 梁晓兵陈春林马明徐柏榆
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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