Li Cuiping et al. used a battery energy storage system to assist in the frequency modulation of thermal power units, significantly improving the frequency modulation effect, smoothing the unit output power and reducing unit wear.
The dynamic frequency modulation model of the whole regional power grid is composed of thermal power units, energy storage systems, nonlinear frequency difference signal decomposition, fire-storage cooperative fuzzy control power distribution, energy storage system output control and other components. Fig. 1.
In this strategy, part of the power commands are assigned to the energy storage system through fuzzy control, so as to establish the primary frequency modulation scheduling module of the thermal power unit coupling energy storage system, which can ensure the power generation revenue of thermal power units.
Under the four control strategies of A, B, C and D, the hybrid energy storage participating in the primary frequency modulation of the unit |Δ fm | is 0.00194 p.u.Hz, excluding the energy storage system when the frequency modulation |Δ fm | is 0.00316 p.u.Hz, compared to a decrease of 37.61 %.
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All the above studies are single energy storage-assisted thermal power units participating in frequency modulation, for actual thermal power units, the use of a single …
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The benefits from frequency regulation of energy storage system and its influences on power grid are especially analyzed, and the main conclusions include: the energy storage …
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This study analyzes the basic requirements of wind power frequency modulation, establishes the basic model of the flywheel energy storage system, adopts a six-phase …
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The energy storage systems are used for controlling the frequency of the system[25 ]. To compensate for the mismatch of generation-load,an advanced energy storage system is …
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What is the integrated regulation strategy for energy storage systems? the integrated regulation strategy proposed in this paper determines the switching time and operating depth of the …
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The experimental results show that the frequency modulation control takes only 8.2 seconds, and the accuracy of frequency modulation control can reach 99.90%, indicating …
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The experimental results show that the frequency modulation control takes only 8.2 seconds, and the accuracy of frequency modulation control can reach 99.90%, indicating …
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This paper aims to meet the challenges of large-scale access to renewable energy and increasingly complex power grid structure, and deeply discusses the application value of …
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