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    基于补气配气的压缩空气储能系统变工况功率控制策略

    Power Control Strategy for Compressed Air Energy Storage System under Off-design Operating Conditions Based on Air Supplement

    • 摘要: 先进绝热压缩空气储能系统在释能过程中存在储气压力衰减、运行工况大范围变化等特征,这增大了机组功率控制的复杂性。针对上述问题,本文提出了一种基于补气配气的自适应控制策略,通过遗传算法在全工况下对PI控制器参数进行寻优,建立基于输出功率与储气压力的控制参数库,结合BP神经网络动态补偿实现控制参数的在线修正,并随后利用该策略开展全释能周期动态特性分析及功率阶跃对比试验。结果表明,在两种典型工况下,自适应控制策略的IAE较常规PI控制分别降低约36%和64%。所提出的自适应控制策略能够实现快速、平稳的功率跟踪,显著缩短动态调节时间,提升压缩空气储能系统变工况运行过程功率调节性能。

       

      Abstract: The advanced adiabatic compressed air energy storage system has characteristics such as pressure attenuation and large-scale changes in operating conditions during the energy release process, which increases the complexity of unit power control. In response to the above issues, this article proposes an adaptive control strategy based on air replenishment and distribution. The PI controller parameters are optimized under all operating conditions through genetic algorithm, and a control parameter library based on output power and storage pressure is established. The online dynamic compensation mechanism is combined to achieve online correction of control parameters. Subsequently, this strategy is used to conduct dynamic characteristic analysis and power step comparison testing of the full energy release cycle. The results show that under two typical conditions, the IAE of the adaptive control strategy is reduced by about 36% and 64% respectively compared to conventional PI control. The proposed adaptive control strategy can achieve fast and smooth power tracking, significantly shorten dynamic adjustment time, and improve the power regulation performance of compressed air energy storage systems during variable operating conditions.

       

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