区块链辅助虚拟发电厂框架,用于为各种分布式能源提供运营储备

iEnergy Pub Date : 2023-06-01 DOI:10.23919/IEN.2023.0013
Hongyi Li;Hongxun Hui;Hongcai Zhang
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引用次数: 1

摘要

从基于煤炭的电力系统向基于可再生能源的电力系统的范式转变给电网的供需平衡带来了更多挑战。分布式能源可以为电网提供运行储备,被认为是补偿可再生能源功率波动的一种很有前途的解决方案。小型DER可以聚合为一个虚拟发电厂(VPP),有资格在运营储备市场上投标。由于DER通常属于不同的实体,因此研究以可信方式协调DER的VPP操作框架非常重要。在本文中,我们为VPP提出了一个区块链辅助运营储备框架,该框架聚合了各种DER。考虑到各种DER的异质性,我们提出了一种统一的储备能力评估方法,以促进DER的聚合。通过考虑实际可用储备容量与估计值之间的不匹配,VPP在运营储备市场中的表现得到了改善。开发了一个基于硬件的实验系统,并给出了数值结果来证明所提出的框架的有效性。
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Blockchain-assisted virtual power plant framework for providing operating reserve with various distributed energy resources
The paradigm shift from a coal-based power system to a renewable-energy-based power system brings more challenges to the supply-demand balance of the grid. Distributed energy resources (DERs), which can provide operating reserve to the grid, are regarded as a promising solution to compensate for the power fluctuation of the renewable energy resources. Small-scale DERs can be aggregated as a virtual power plant (VPP), which is eligible to bid in the operating reserve market. Since the DERs usually belong to different entities, it is important to investigate the VPP operation framework that coordinates the DERs in a trusted manner. In this paper, we propose a blockchain-assisted operating reserve framework for VPPs that aggregates various DERs. Considering the heterogeneity of various DERs, we propose a unified reserve capacity evaluation method to facilitate the aggregation of DERs. By considering the mismatch between actual available reserve capacity and the estimated value, the performance of VPP in the operating reserve market is improved. A hardware-based experimental system is developed, and numerical results are presented to demonstrate the effectiveness of the proposed framework.
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