Method for controlling wind-hydrogen energy storage coupling system connected with wind electric field in distributed manner
A coupling system and control method technology, applied in the field of wind-hydrogen energy storage coupling system control, can solve the problem of not considering the distribution of multiple wind farms and energy storage power from a global perspective
Inactive Publication Date: 2015-08-05
袁铁江
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However, this allocation scheme is limited to a single wind farm combined with photovoltaic power plants and energy storage for active power dispatching and allocation research, and does not consider the coordinated power allocation of multiple wind farms and energy storage from a global perspective.
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] In the present invention, the actual output distribution control flow of the wind farm is as follows: figure 1 shown. In order to overcome the fluctuation and randomness of wind power output and the randomness of local load, the present invention proposes a grid-connected and energy storage power distribution control method based on the actual output of wind farms monitored in real time. Through this control method, wind power can be connected to the grid according to demand, and "shortage" can be adjusted, and "surplus" can be stored, so as to ensure the smooth and stable grid connection of wind power, reduce "abandoned wind" and improve the capacity of wind power consumption.
[0028] The specific control methods are as follows:
[0029] The actual output of the wind farm P wind with local load P load For comparison, if the actual ...
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The invention provides a method for controlling a wind-hydrogen energy storage coupling system connected with a wind electric field in a distributed manner. The method is based on a difference between an actual electric wind field output power and a local load and coordinates with an upper-grade electric network scheduling plane. A hydrogen energy storage equivalent SOC (state of charge) state is used as a judging basis for controlling power distribution of wind power integration and hydrogen energy storage in the wind-hydrogen energy storage coupling system. Through monitoring changes of an actual wind electric field output power Pwind, a local load Pload and the upper-grade electric network scheduling plane Pjh in a real-time online manner, a comparison result between the actual wind electric field output power Pwind and the local load Pload is acquired, and furthermore the comparison result is combined with the hydrogen energy storage equivalent SOC state for secondary comparison with the upper-grade electric network scheduling plane Pjh. A system power comparator transmits a control instruction to a power distribution executor according to the two comparison results. The power distribution executor controls distribution of a wind power, and simultaneously feeds a wind power integration power back to an upper-grade electric network scheduling department. The upper-grade electric network scheduling department controls a wind electric cluster in a coherency-based equivalence principle according to integration data which are fed back from each wind electric field.
Description
technical field [0001] The invention relates to a control method for a wind-hydrogen energy storage coupling system. Background technique [0002] Due to the impact of large-scale wind power grid-connection on the power grid, the intermittent and random nature of wind resources, and the characteristics of wind power anti-peak regulation, the consumption problems of wind power generation such as "difficulty in connecting to the grid" and "high wind abandonment" have become more serious. So far, researchers at home and abroad have proposed the following two types of solutions to improve the wind power grid-connected capacity: (1) Through the three types of energy storage, physical energy storage, electromagnetic energy storage, and chemical energy storage, optimize the flexibility of hydropower, gas-fired power stations, etc. Adjust the power supply, increase the proportion of flexible power supply in the power grid, and provide the possibility for rapid peak regulation of win...
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Login to View More IPC IPC(8): H02J3/46H02J3/28
CPCY02E10/76Y02E60/36Y02E70/30
Inventor 袁铁江段青熙胡笛
Owner 袁铁江