Itô-theory-based multi-time scale dispatch approach for cascade hydropower-photovoltaic complementary system

• DOI: 10.1016/j.renene.2022.11.038
• Publication Date: 2022-11-19T16:53:08Z
• Authors: Zizhao Wang; Feng Wu; Yang Li; Linjun Shi; Kwang Y. Lee; Jiawei Wu
• Keywords: Economic Dispatch

The complementary operation of cascade hydropower (CHP) and photovoltaic (PV) can increase the integration PV power has become a trend in modern systems. However, randomness variability output might cause challenges precisely tracking submitted generation plan CHP-PV system. safety stability receiving-end grid deteriorate. In this paper, multi-time scale dispatch framework with day-ahead intra-day is established for system to address uncertainties. employed provide reliable reference results sufficient adjustment reservations dispatch. An Itô-theory-based stochastic optimization (ITB-SO) approach proposed by modeling prediction error differential equations (SDE). SDE model be embedded into ITB-SO without scenario generation, thus computational burden significantly reduced compared scenario-based methods. A southwest China chosen as detailed case study. simulation demonstrate that real-time random fluctuations could compensated adjusting CHPs. Meanwhile, target water level reservoirs tracked under approach.