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Pumped storage system, control method and storage medium

A technology of pumped storage and pumped storage units, which is applied in the control system, motor generator control, electrical components, etc., and can solve problems such as inability to connect jumps and expansion of equipment accidents

Active Publication Date: 2021-09-14
SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]In the above system, since multiple pumped storage units are connected in parallel to one point and connected to the energized tripping relay, once the terminals of the converging point become loose or the energized tripping relay failure, all units will not be able to jump SFC together, which may cause equipment accidents to expand

Method used

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  • Pumped storage system, control method and storage medium
  • Pumped storage system, control method and storage medium
  • Pumped storage system, control method and storage medium

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Embodiment Construction

[0030]In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In a pumped storage system, multiple pumped storage units are connected in parallel and then connected in series with a static frequency converter (SFC). When the pumped storage unit is started, the SFC needs to be used to provide the stator in t...

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Abstract

The invention relates to a pumped storage system, a control method and a storage medium, and is suitable for the technical field of pumped storage units. The pumped storage system comprises: a static frequency converter, a power-losing tripping relay and a plurality of pumped storage units which are sequentially connected in series, wherein each pumped storage unit comprises a working circuit and a tripping circuit, each tripping circuit comprises a first control circuit, a first relay and a second relay, and the first relay and the second relay are connected in parallel; a static frequency converter which is used for providing current for a stator in a working circuit in the pumped storage unit; and each first control circuit which is used for controlling the normally closed contacts of the first relay and the second relay in the tripping circuit where the first control circuit is located to be switched off under the condition that the pumped storage unit where the first control circuit is located is abnormal in the dragging starting process of the SFC, so that the power-loss tripping relay triggers the SFC to trip out and stop running after power loss. The pumped storage system can ensure that the static frequency converter trips in time, and equipment accidents are prevented from expanding.

Description

technical field [0001] The present application relates to the technical field of pumped storage units, in particular to a pumped storage system, a control method and a storage medium. Background technique [0002] In the pumped storage system, the static frequency converter (hereinafter referred to as SFC) is connected to multiple pumped storage units through the start bus and multiple switch switches, such as figure 1 shown. Among them, when the pumped storage unit is started in the pumping direction, it is necessary to use a static frequency converter (SFC) to provide a current with a gradually increasing frequency to the stator in the pumped storage unit to drive the rotor in the pumped storage unit to increase speed. When an accident occurs in the pumped storage unit, it is necessary to jump the SFC at the first time, so that the SFC stops providing variable frequency current to the stator of the pumped storage unit, so as to ensure the safety of the equipment. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/02H02H7/06
CPCH02P1/022H02H7/06Y02E10/20Y02E60/16
Inventor 汪志强彭煜民张学峰周海燕陈满李尧贺儒飞李德华胡振恺王文辉张豪王方李晓春侯宝生
Owner SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
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