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Method for transferring loads of new and old transformer substation power distribution systems without power outage

A technology for power distribution system and load transfer, which is applied in the direction of power network operating system integration, information technology support system, electrical components, etc., to achieve the effect of improving stability, reducing operation risk and good social benefits

Active Publication Date: 2021-09-07
SGIS SONGSHAN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a method for transferring loads in the power distribution system of old and new substations without power failure, which can still provide normal power supply during the process of transferring loads, realizes a smooth transition, and solves the problem of single power supply operation of old and new substations. risk issues

Method used

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  • Method for transferring loads of new and old transformer substation power distribution systems without power outage
  • Method for transferring loads of new and old transformer substation power distribution systems without power outage
  • Method for transferring loads of new and old transformer substation power distribution systems without power outage

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] It is worth noting that the orientation words such as "up" and "down" involved in this article are all determined relative to the perspective of the drawings, and are only for the convenience of description, and cannot be understood as limitations on the technical solution.

[0035] The invention provides a method for transferring loads without power failure in the power distribution system of old and new substations, comprising:

[0036] Step 1. Transfer the first 110kV power supply of the old station to the new station, and the equipment of the new station will be tested without load; install the primary equipment, secondary equipment, cable facilities, etc. of the substation in each functional building of the new station, Complete the handover test of all equipment such as the integrated automation system, power dispatching automation and it...

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Abstract

The invention relates to a method for transferring loads of new and old transformer substation power distribution systems without power outage, which comprises the following steps: 1, switching a first 110kV power supply of an old station to a new station, and carrying out no-load trial operation on equipment of the new station; 2, transferring 6kV loads of the old station to the new station one by one, and in the transferring process, keeping a first 6kV switching station and a second 6kV switching station in closed-loop operation; and 3, switching a second 110kV power supply of the old station to the new station to complete load transfer. Normal power supply can still be achieved in the load transfer process, smooth transition is achieved, the risk problem caused by single-power-supply operation of new and old transformer substations is solved, the operation reliability of the new and old transformer substations can be improved without increasing investment, and more beneficial things can be done at the same cost.

Description

technical field [0001] The invention relates to a method for load transfer of a power distribution system, more specifically, it relates to a method for transferring loads of a new and old substation power distribution system without power failure. Background technique [0002] When the equipment of the 110kV substation (referred to as the old substation) is aging and needs to be renovated, there are problems such as difficulty in in-situ renovation and long power outage time. Therefore, the old substation is generally not renovated in situ, but another 110kV substation is built near the old substation. When a substation (new substation for short) is built and put into operation, it is necessary to complete the load migration and switching between the new substation and the old substation. [0003] The main wiring methods of the new station and the old station are similar: 2 circuits of 110kV power supply incoming lines, 110kV bus as single bus section, 2 sets of 31.5MVA mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/007H02J3/0075Y04S20/222
Inventor 陶瑞基孟辉王鹏刘钦伟赵小平黄少斌刘贵安吕文邹平根凌继刚李靖谢忠忠
Owner SGIS SONGSHAN CO LTD
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