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Design method for A-class black-start emergency power supply of hydropower station

A technology of emergency power supply and design method, applied in the direction of emergency power supply arrangements, electrical components, circuit devices, etc., can solve problems such as difficult to implement class A black start transformation of units, does not support DC power supply, etc., and achieves strong operability and adaptability Resilience, fast up and running, and highly scalable effects

Active Publication Date: 2021-07-20
CHINA YANGTZE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Class A black start mode has the characteristics of short power supply time and fast response, but it is more dependent on the support and adaptability of electrical equipment to the power supply of the DC system of the power station. It is difficult to implement Class A black start transformation of the unit due to DC power supply

Method used

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  • Design method for A-class black-start emergency power supply of hydropower station
  • Design method for A-class black-start emergency power supply of hydropower station
  • Design method for A-class black-start emergency power supply of hydropower station

Examples

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Embodiment Construction

[0026] like figure 1 As shown, a class A black-start emergency power supply of a hydropower station includes an EPS device and a battery 4. The EPS device includes a first AC module 1, a DC module 2, and a second AC module 3. The output terminal of the battery 4 is connected to the DC module 2. , the first AC module 1 is used as the input end of the EPS device to connect with the second section 6 of the self-use electric bus, the output end of the storage battery 1 is connected to the input end of the DC module 2, and the second AC module 3 is used as the output end of the EPS device It is connected with section 5 of self-use electric busbar I.

[0027] Optionally, the EPS device is a power EPS device, and the input and output are both AC380V / 50Hz.

[0028] The power supply of Section II 6 of the self-use electric bus is provided by the black start unit itself, and the input end of the first AC module 1 is respectively connected with Section I 5 of the self-use electric bus a...

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Abstract

According to the design method of the class-A black-start emergency power supply of the hydropower station, the power supply comprises an EPS device and a storage battery, the EPS device comprises a first AC module, a DC module and a second AC module, the output end of the storage battery is connected with the DC module, the first AC module serves as the input end of the EPS device and is used for being connected with the section II of a self-powered bus, the output end of the storage battery is connected with the input end of the DC module, and the output end of the storage battery is connected with the input end of the DC module. The second AC module serves as the output end of the EPS device and is used for being connected with the section I of the self-powered bus. Aiming at the problem that A-class black-start transformation of a unit is difficult to implement for equipment based on early design in a hydropower station, the invention provides the design method and device for the A-class black-start emergency power supply of the hydropower station, and after the equipment is reasonably transformed, the equipment can quickly provide a power supply for black start of a water-turbine generator set.

Description

technical field [0001] The invention belongs to the technical field of hydropower equipment and its auxiliary equipment, and in particular relates to the emergency power supply technology used in hydropower stations. Background technique [0002] The Class A black start method of hydropower station is to use only the electric energy stored in the DC battery and the hydraulic energy stored in the hydraulic system to restore the working power of the plant. Most of the power sources are batteries. Class A black start mode has the characteristics of short power supply time and fast response, but it is more dependent on the support and adaptability of electrical equipment to the power supply of the DC system of the power station. DC power supply makes it difficult to implement Class A black start transformation of the unit. Contents of the invention [0003] The present invention aims at the problem that it is difficult to carry out Class A black-start transformation of units ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCH02J9/062Y02B10/70
Inventor 李志祥邓键赖见令罗云何哲文孔丽君常中原黄开斌
Owner CHINA YANGTZE POWER
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