Electric power and energy balance method for accurately calculating wind power contributions

A technology for power balance and wind power, which is applied in computing, instrumentation, data processing applications, etc., and can solve the problems of not proposing analysis methods, quantitatively evaluating the impact of wind power output, and not proposing

Active Publication Date: 2013-07-17
云南电网有限责任公司电网规划研究中心
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Problems solved by technology

[0004] The main difficulty in taking into account the contribution of wind power in the power balance is that no suitable index has been

Method used

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  • Electric power and energy balance method for accurately calculating wind power contributions
  • Electric power and energy balance method for accurately calculating wind power contributions
  • Electric power and energy balance method for accurately calculating wind power contributions

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specific Embodiment approach

[0030] (1) The first part "electric power system": the dispatching automation system needs to add the function of automatically exporting the historical data of wind power output from the EMS background, and the rest of the parts do not need to be changed.

[0031] (2) The second part "data preparation" and the third part "power balance": this is the core content of the present invention, and the power balance analysis module is compiled according to the method of the present invention, and this module can be directly integrated in the existing EMS system , and a computer can also be arranged separately as a computing platform.

[0032] (3) The fourth part "feedback": it is implemented by dispatching operators, which is the result of the implementation of the method of the present invention for the power system.

[0033] The implementation of the method will be further described below by taking a certain provincial power grid as an example.

[0034] The province's power grid ...

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Abstract

An electric power and energy balance method for accurately calculating wind power contributions comprises a first step of first defining two wind power contributing characteristic indexes for electric power and energy balance; a second step of calculating actual available capacity Nsc of a system; a third step of calculating electric power balance gain or loss delta P according to the equation that delta P=Nsc-Pm; a fourth step of calculating fire power generated energy Wt according to the equation that Wt=Wm-Wh-Ww; and a fifth step of showing that supply and demand of electric quantity are balanced if fire power starting of the system and fire coal conditions can meet the generated energy Wt in a current month; showing that demand exceeds supply in the electric quantity if the fire power starting of the system and the fire coal conditions cannot meet the generated energy Wt in the current month, and needing to increase hydraulic generator set contributions or limit a load. The electric power and energy balance method has the advantages of being clear in physical significance, high in accuracy and quick in calculating speed.

Description

technical field [0001] The invention belongs to the field of power system operation control, and is an electric power balance method that can accurately account for wind power contribution. Background technique [0002] Wind power is currently the fastest growing new energy industry. Due to the randomness and volatility of wind power, traditional power balance analysis methods do not consider the impact of wind power, and rely entirely on conventional hydroelectric thermal power units to reserve "full" reserve capacity for wind power. When the installed capacity of wind power in the system is small, it is acceptable to carry out power balance in this way, but as the installed capacity of wind power increases to a certain scale, if the influence of wind power is still ignored in the power balance, on the one hand, it will cause the result of power balance If the deviation is too large, on the other hand, the system will reserve too much spare capacity and cause waste. [00...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 王兴刚张虹吴政声
Owner 云南电网有限责任公司电网规划研究中心
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