An Online Calculation Method for Admissible Wind Power Generation Capacity of Grid
A technology of accommodating capacity and calculation method, applied in the field of online computing, to achieve the effect of economically controlling demand and reducing restrictions on wind power generation
Active Publication Date: 2016-04-27
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 online calculation method of the grid that can accommodate wind power generation capacity proposed by the present invention comprises 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 and lower limits of the down-spinning dead zone of the automatic generation control in the grid are respectively and Generally, it is manually specified by the dispatcher, The typical range of values is 5‐10 MW, The typical value of 200-100 MW, Typical values are 100‐50 MW, respectively.
[0024] (2) Obtain the current power grid operation information from the data acquisition and monitoring control system of the power grid. The operation information includes the total active power capacity of all automatic generation control units put into the power grid The sum of the current spin-down of all automatic generator control units The real-time value of the active power of the tie line...
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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 a power grid's acceptable wind power generation capacity, and belongs to the technical field of operation and control of new energy access power systems. Background technique [0002] The strong randomness of wind resources, difficulty in forecasting, and anti-peak regulation make the active power dispatching and control of the power grid more difficult. How to maximize the utilization of wind power resources and absorb as much wind power as possible on the premise of ensuring the safety of the power grid has become one of the common challenges faced by the power grids where all wind power bases are located. At present, the industry has conducted a lot of research on the active power dispatching control after the wind power generation is connected, and obtained a series of research and application results. The actual field operation experience shows that the introduction of minute-level fast wi...
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IPC IPC(8): H02J3/38
CPCY02E10/76
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