Waste heat power generation grid-connection interlocking system

Abstract

The invention discloses a waste heat power generation grid-connection interlocking system. The system comprises a waste heat power generation system, a general step-down station, a quick switch cabinet FSR, a power station side contact switch cabinet 52P, a generator switch cabinet 52G and a distribution bus, the general step-down station comprises a total drop bus, a total drop incoming cabinet H1 and a total drop side contact cabinet 52F, the total drop incoming cabinet H1 is connected with the total drop bus which is connected with the total drop side contact switch cabinet 52F, the total drop side contact switch cabinet 52F is connected with the quick switch cabinet FSR which is connected with the power station side contact switch cabinet 52P, and the power station side contact switchcabinet 52P is connected with the distribution bus which is connected with the output end of the waste heat power generation system through the generator switch cabinet 52G; the total drop side contact cabinet 52F and the total drop incoming cabinet H1, the quick switch cabinet FSR and the generator switch cabinet 52G are arranged in an interlocking mode. By means of interlocking running, the safety of power receiving and feeding operations of a power station is improved, and misoperation and power generation system isolated net running are prevented.

Description

technical field [0001] The invention relates to the field of waste heat power generation, in particular to a grid-connected interlocking system for waste heat power generation. Background technique [0002] During the production process of the new dry-process cement clinker production line, the waste heat boiler of the waste heat recovery device removes a large amount of low-grade waste gas waste heat from the cement kiln cooler system and preheater for heat recovery, and generates superheated steam to drive the steam turbine to realize the installation of thermal energy and mechanical energy. It will then drive the generator to generate electricity and supply the electricity load in the cement production process, which has very huge environmental protection and economic benefits. [0003] For the waste heat power generation system, before connecting to the grid, the electric energy of the general step-down station needs to be transmitted to the power room of the power plant...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, cement factories generally have the characteristics of complex power supply system, multiple types of power supply sources, large short-circuit current, and uneven levels of operators. Improper operation will have serious consequences for the power generation system equipment and the entire system power supply network; therefore, ensure that the waste heat power generation system The safety of power receiving and feeding operations, the prevention of misoperation and the isolated grid operation of the power generation system, and the reduction of the mutual influence between the power grid side and the power generation side are very important

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