Control method and system for secondary frequency modulation of thermal power unit assisted by energy storage device
A technology of energy storage device and control method, which is applied in the direction of AC network load balancing, single-network parallel feeding arrangement, etc., can solve the problems of weak frequency modulation capability, endangering the safety of the unit itself and the power grid, etc., and achieve improved dynamic performance and high frequency modulation benefits Effect
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[0027] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Apparently, the described embodiment is only a part of the examples of the present invention, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] The complete structure of the auxiliary FM system is as follows: figure 1 As shown, it includes two parts: energy storage device and control system. The energy storage device is mainly composed of two parts: an energy storage battery and an inverter. The control system consists of two parts: the power control module based on the state of charge of the energy storage device and the time-delay compensation module based on the Smith estimator, which accepts the secondary...
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