Thermal power generating unit primary frequency modulation system based on new energy power generation equipment

Abstract

The invention discloses a thermal power generating unit primary frequency modulation system based on new energy power generation equipment. The thermal power generating unit primary frequency modulation system comprises a high-voltage bus, a main transformer, a generator, a high-voltage station transformer, a 6kV station power bus, a boosting transformer and the new energy power generation equipment. The new energy power generation equipment is connected to the high-voltage station transformer through the boosting transformer and the new energy outlet circuit breaker; the generator is connected to the high-voltage bus through the generator outlet circuit breaker via the main transformer, and the generator is connected to the 6kV station service bus through the high-voltage station service transformer and the high-voltage station service circuit breaker. The primary frequency modulation response quality can be greatly improved, and the economic benefits of power generation enterprises are increased.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a thermal power unit primary frequency regulation system based on new energy power generation equipment. Background technique [0002] In domestic thermal power plants, due to the influence of objective factors such as power supply coal quality fluctuations and low online measurement accuracy of the wind powder system, it is difficult for the control system to ensure the stability of the unit parameters when the load is raised and lowered at a relatively fast rate, and at the same time, the coal consumption and power consumption of the unit are aggravated. wear and tear. Although the current high-voltage throttling technology and multi-variable collaborative optimization system can greatly improve the rapid adjustment capability of the unit while taking into account the unit’s operational stability and long-term energy-saving benefits, the actual load...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal power unit primary frequency regulation system based on new energy power generation equipment in view of the fact that the new energy power generation equipment connected to the existing factory power cannot participate in the primary frequency regulation of the unit and cannot help the unit improve the performance of the primary frequency regulation. The structure is simple, and the cost of operation and maintenance is low. The power information of the new energy power generation equipment is transmitted to the PMU device. The sum of the power of the new energy power generation equipment and the output power of the generator is transmitted to the dispatching center as the actual generating power of the unit, and is used as the primary frequency regulation index of the unit. Greatly improve the response quality of primary frequency modulation and increase the economic benefits of power generation enterprises

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