An Intelligent Frequency Control Method Considering Multidimensional Frequency Control Performance Criteria
A frequency control, multi-dimensional technology, applied in wind power generation, reducing/preventing power oscillation, single-grid parallel feeding arrangement, etc., can solve problems such as short-term power disturbance, improve frequency quality, improve system stability, solve Paradoxical effects on time scales
Active Publication Date: 2022-06-03
YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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Problems solved by technology
This control method can effectively deal with the short-term power disturbance problem caused by wind power and other new energy sources connected to the grid, can effectively solve the contradiction of multi-dimensional frequency control performance indicators on the time scale, and improve system stability
Method used
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Embodiment Construction
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[0056] Since the constraint of the BAAL index on the ACE changes dynamically with the time allowed to continuously cross the line, when considering
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[0062] CPS1
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[0069] α (0<α<1) is the learning rate, a larger learning rate will speed up the convergence speed, but lose a better search space,
[0071] Qi(s, a) represents the Q value of the selection action ΔP(t) under the i-th target state ACE(t), and the size of the Q table is S*A, Q
[0072] represents the maximum Q value of the multi-objective reinforcement learning algorithm.
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[0080] Finally, the agent passes the learned W
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Considering the intelligent frequency control method of multi-dimensional frequency control performance standard, on the basis of CPS frequency control strategy, CPS control and BAAL control are introduced to realize cooperative control. Construct an intelligent frequency control strategy for collaborative evaluation of multi-dimensional frequency control performance standards, including constructing a synergistic reward function for the conflict of multi-dimensional frequency control performance standards on the time scale; based on the constructed synergistic reward function, update the Q value of multi-objective reinforcement learning . Using the TOPQ learning strategy, the maximum Q value of the MORL algorithm is calculated to make intelligent decisions on the action space. A comprehensive evaluation of the system stability improvement effect after optimal control is carried out. The control method of the present invention can effectively deal with the short-term power disturbance problem caused by wind power and other new energy sources connected to the grid, can effectively solve the contradiction of multi-dimensional frequency control performance indicators on the time scale, and improve system stability.
Description
An Intelligent Frequency Control Method Considering Multi-dimensional Frequency Control Performance Criteria technical field The invention belongs to the grid frequency coordinated control technical field, be specifically related to a kind of considering multi-dimensional frequency control performance Standard intelligent frequency control method. Background technique In secondary frequency modulation engineering practice, take into account the regional control deviation proportional component, integral component, and CPS control component. The threshold zoning AGC control method with combined influence of quantity is widely used in my country. In recent years, with the integration of large-scale new energy into the grid, various With the introduction of quasi-frequency modulation methods, the coordinated control of the frequency of the interconnected power grid has become increasingly complex. Because the intelligent frequency control method does not depend on the ...
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IPC IPC(8): H02J3/24H02J3/38
CPCY02E10/76
Inventor 谢琼瑶何奇项川金潇杨荆宜
Owner YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD