A joint scheduling method for wind power, thermal power and pumped water storage stations
A technology of pumping energy storage and joint dispatching, which is applied in wind power generation, energy storage, electrical components, etc., and can solve the problems of low wind power consumption level and low power grid impact ability
Active Publication Date: 2021-12-17
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +2
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: the current low level of wind power consumption in the distribution network and the low ability to restrain the impact of wind power on the power grid
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[0019] The specific embodiments of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings.
[0020] like figure 1 As shown, it is a structural diagram of the distribution network system. In the distribution network connected with the distributed wind farm 400, the pumped energy storage station 200 is connected, and the wind farm 400 and the pumped energy storage station 200 are connected to each other through the distribution network line 300. , there is no need to use a dedicated line independent of the distribution network line 300 for mutual connection. The pumping power and generating power of the pumped energy storage station 200 can be regulated by the dispatching center. There is a thermal power source in the distribution network, which can be the thermal power plant 100 in the distribution network, or it can be connected to the thermal power plant 100 by the upper-level grid. In suc...
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The present invention relates to the technical field of wind-fired-storage joint dispatching, in particular to a joint dispatching method of wind-thermal power and pumped-water storage station, comprising the following steps: A) setting an upper threshold, a lower threshold and a working interval for the water storage capacity of the pumped-water storage station; B) When the water storage of the pumped storage station is higher than the upper threshold, the pumped storage station works in the power generation mode until the water storage of the pumped storage station drops to the working range; C) When the water storage of the pumped storage station is lower than the lower threshold When , the pumped storage station works in the energy storage mode until the water storage capacity of the pumped storage station increases to the working range; D) When the storage capacity of the pumped storage station is between the upper threshold and the lower threshold, the pumped storage station is set according to the state of the grid. In energy station working mode, step B‑D is executed cyclically. The beneficial effect of the present invention is: through the change of the working state of the energy storage station, the amplitude of the wind power output fluctuation is reduced, and the ability of the distribution network to absorb the wind power and the ability to resist the impact of the wind power fluctuation is improved.
Description
technical field [0001] The invention relates to the technical field of wind-fired-storage joint scheduling, in particular to a joint scheduling method for wind-fired power and pumped-water storage stations. Background technique [0002] As a highly praised clean energy, wind power has penetrated into the distribution network of cities and towns as a distributed power source, which has caused a serious impact on the quality of the power grid, such as the voltage and frequency stability of the distribution network. In order to cope with the impact of changes in wind power output on the power grid, the distribution network needs to increase investment, resulting in a decline in the benefits of wind power access. This also greatly limits the further development of wind power distribution networks in cities and towns. Connecting scattered wind farms in the distribution network can increase the proportion of clean energy in the power system, mobilize the enthusiasm of users to in...
Claims
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IPC IPC(8): H02J3/46H02J3/38H02J3/28H02J3/24
CPCH02J3/386H02J3/24H02J3/28H02J3/46Y02E70/30Y02E10/76
Inventor 陈嵘王文华韩志军钱啸方景辉郑伟军钱伟杰刘维亮周浩俞涯赵俊施海峰冯振宇顾曦华陈冰晶
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO