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Molten salt heat storage and steam supply system for supplying black-start power supply and working method

A technology of steam supply system and black start, applied in the direction of emergency treatment AC circuit layout, preheating, heat storage equipment, etc., can solve problems such as black start of power plants, reduce power generation load, improve system operating efficiency, and solve black start problems Effect

Pending Publication Date: 2022-02-08
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to achieve the above purpose, the present invention provides a molten salt heat storage and steam supply system and working method for supplying a black start power supply. The coal-fired generating set is organically combined with the molten salt heat storage system, and the molten salt heat storage system is equipped with steam Turbine generator set, used for black start power supply of power plants, solves the black start problem of power plants

Method used

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  • Molten salt heat storage and steam supply system for supplying black-start power supply and working method
  • Molten salt heat storage and steam supply system for supplying black-start power supply and working method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] see figure 1 and figure 2 , a molten salt heat storage steam supply system that supplies a black starter power supply, including a boiler 1, the steam outlet of the boiler 1 is connected to the high-pressure cylinder 2, the reheat steam outlet of the boiler 1 is connected to the medium-pressure cylinder 3 through pipelines, and the medium-pressure cylinder 3 The steam outlet is connected to the low-pressure cylinder 4 through pipelines, the low-pressure cylinder 4 is connected to the first generator 5, the first generator 5 is connected to the second generator 22, the main transformer 25 and the factory transformer 26, and the reheated steam of the boiler 1 passes through as a heat source The pipeline is connected to the molten salt heater 15, and a third valve 14 is arranged between the boiler 1 and the molten salt heater 15. The reheated steam after heat ex...

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Abstract

The invention relates to a molten salt heat storage and steam supply system for a supplying black-start power supply and a working method. According to the molten salt heat storage and steam supply system for the supplying black-start power supply and the working method, hot re-extraction steam of a boiler is used for heating molten salt for heat storage, the power generation load of a unit can be effectively reduced, and peak regulation operation of the unit is achieved. Compared with a traditional electric heating heat storage system, the system of the invention avoids multi-stage conversion from steam heat energy to electric energy to molten salt heat energy, and improves the operation efficiency. The molten salt heat storage system transmits stored heat energy to steam through a steam generator and is used for supplying steam to the outside in an industrial mode or used as a power source to drive a steam turbine generator unit to operate; power generated by the steam turbine generator unit can be merged into a plant power utilization end through a plant transformer to drive an auxiliary machine to operate in a starting process, s that black-start power supply of the power plant is achieved, and the black-start problem of the power plant in isolated grid operation can be effectively solved.

Description

technical field [0001] The invention belongs to the field of molten salt heat storage and steam supply, and in particular relates to a molten salt heat storage and steam supply system and a working method for supplying a black start power supply. Background technique [0002] Black start means that after the entire system is powered off due to a fault, without the help of the external power supply of the system, the units with self-starting ability in the system are started first, and then the units without self-starting ability are driven to gradually expand the power supply range of the system, and finally realize the power supply of the entire system. The process of restoring power. [0003] The design black start capability of coal-fired power plants is not only a necessary measure for safe production and self-rescue of power plants in the event of power failure, but also a requirement for reliable and stable operation of the power grid. Due to the current highly interc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K11/02F01K13/00F01D15/10F01D17/10H02J3/00F22D11/06F28D20/00
CPCF01K11/02F01K13/00F01D15/10F01D17/10H02J3/001F22D11/06F28D20/0034F28D2020/0047Y02E60/14
Inventor 王妍马汀山吕凯居文平许朋江石慧张建元薛朝囡邓佳
Owner XIAN THERMAL POWER RES INST CO LTD
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