Abstract
As one of the effective approach to address the energy crisis concerns, the combined heating and power (CHP) generation is more and more popular worldwide due to the remarkable increase of energy efficiency. Meanwhile, the regulation capability of CHP systems is expected to be utilized to meet the operation requirement of electricity networks. In this paper, a novel strategy based on virtual power to heat ratio is implemented to realize auxiliary services of CHP generations. The proportion of power and heat generation is restricted by operation states of combined energy systems and reassigned through allocation of thermal energy storage. Case studies on a hybrid electricity and natural gas system show that the proposed approach achieves satisfied regulation in response to overvoltage problems in power networks. The CHP generation serving for heavier loading demands is able to provide more effective auxiliary services.
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