Wind-storage combined frequency regulation operation model and multi-market bidding and control method and system

Abstract

The embodiment of the invention discloses a wind storage combined frequency-modulation operation mode and a multi-market bidding and control method and system. Aiming at the defects of wind power and energy storage during the frequency modulation process, a wind power and energy storage combined frequency modulation operation mode is designed by applying complementary characteristics of accuracy and durability of wind power and energy storage in providing frequency modulation service. A bidding optimization model of a wind storage combination body in energy market and frequency modulation market is built to achieve maximum benefit, a control strategy that wind power frequency modulation is preferably controlled and the battery energy storage is used for compensating insufficient frequency modulation output and a frequency modulation deviation processing part to achieve accurate control on a frequency, the attenuation on energy storage lifetime of a battery is reduced, and the frequency modulation pressure of a power grid in future is relieved. Based on effective guidance significance, wind power, energy storage plan and an operator can organize wind power and energy storage to participate in frequency modulation market according to the wind storage combined frequency-modulation operation mode.

Description

technical field [0001] The present invention relates to the field of electric power market, in particular to an operation mode of wind-storage joint frequency regulation and a multi-market bidding and control method and system. Background technique [0002] In most power markets in the past, the frequency regulation market only provided compensation for the frequency regulation capacity reserved for the system by frequency regulation resources based on the unified clearing price of the system. Although the frequency modulation service provided by some resources (such as gas-fired units, energy storage, etc.) has a faster response speed and contributes significantly more to the stable system frequency than traditional units (coal-fired units, etc.), the obtained frequency modulation compensation is still the same as that provided The capacity is the same as conventional units for FM service. This kind of compensation mechanism based only on the bidding capacity of frequency ...

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Problems solved by technology

[0010] At present, wind power and energy storage have the following problems in providing frequency modulation services: for wind power, frequency modulation can reduce its fatigue load, but its frequency modulation accuracy level is not satisfactory, which limits the frequency modulation market revenue proportional to the frequency modulation effect, and needs to be weighed economically Wind power’s frequency regulation market income and lost energy market income; for battery energy storage, its frequency regulation performance is very good, but it faces the risk of accelerated aging during the frequency regulation process of frequent charging and discharging

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