On-line computation method for acceptable wind power generation capacity of power grids
A technology of accommodating capacity and calculation methods, applied in the field of online computing, to achieve the effect of reducing the demand for wind power generation and economic control
Active Publication Date: 2014-09-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology
The present invention adapts to the current rapid fluctuation of wind power generation and the large-scale control requirements of wind power generation access
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[0022] The on-line calculation method for the power grid that can accept wind power generation provided by the present invention includes the following steps:
[0023] (1) Set the active power control dead zone of the tie line between the grid and the wind farm as The upper limit and lower limit of the down-spin backup dead zone of automatic power generation control in the power grid are respectively with Generally designated manually by dispatch operators, The typical value range of is 5-10 MW, The typical value of is 200-100 MW, The typical values of are 100-50 MW.
[0024] (2) Obtain current grid operation information from the data acquisition and monitoring and control system of the grid, and the operation information includes the total active power capacity of all automatic generation control units that are input in the grid The current total down-spinning of all automatic power generation control units Real-time value of active power of tie line between grid and wind ...
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The invention relates to an on-line computation method for acceptable wind power generation capacity of power grids, and belongs to the technical field of operation and control of new energy access power systems. According to the method, the wind power generation acceptance states, respectively being a limited wind power generation state, a maintaining state and an increasing wind power generation state, are defined according to downward spinning reserve of active power of an automatic power generation control unit and deviation of active power of a tie line. And computation methods for acceptable wind power generation capacity of the power grid under the three wind power generation acceptance states are respectively provided according to that whether the units in the current power grid are engaged into automatic power generation control. Under the premise of ensuring safety of the power grid, the limited wind power generation is reduced to the best extent possible. The method can be integrated into a wind power generation active control main station system operating in a control center, so that the system can implement the optimal control strategy according to operational states of wind power generation and the power grid in real time so as to achieve different control requirements on safety, high quality and economy of the power grid.
Description
Technical field [0001] The invention relates to an online calculation method for the power grid to accept wind power generation capacity, and belongs to the technical field of operation and control of new energy sources connected to a power system. Background technique [0002] The strong randomness of wind resources, difficulty in forecasting, and anti-peak shaving make it more difficult to control active power dispatch in the power grid. How to maximize the use of wind power resources and absorb as much wind power as possible under the premise of ensuring the security of the power grid has become one of the common challenges faced by the power grids where all wind power generation bases are currently located. At present, the industry has conducted a lot of research on active power dispatch control after wind power generation is connected, and a series of research and application results have been obtained. The actual field operation experience shows that the introduction of mi...
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IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 孙勇吴文传郑太一王彬范国英郭庆来杨国新张伯明郭雷孙宏斌李振元潘昭光
Owner STATE GRID CORP OF CHINA