Assessment of PV Hosting Capacity in a Small Distribution System by an Improved Stochastic Analysis Method

Yu-Jen Liu, Yu-Hsuan Tai, Yih- Der Lee, Jheng-Lung Jiang and Chen-Wei Lin
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Yu-Jen Liu: Department of Electrical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
Yu-Hsuan Tai: Taiwan Power Company, Taipei 10016, Taiwan
Yih- Der Lee: Nuclear Instrument Division, Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan
Jheng-Lung Jiang: Nuclear Instrument Division, Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan
Chen-Wei Lin: Taiwan Power Company, Taipei 10016, Taiwan

Energies, 2020, vol. 13, issue 22, 1-20

Abstract: PV hosting capacity (PVHC) analysis on a distribution system is an attractive technique that emerged in recent years for dealing with the planning tasks on high-penetration PV integration. PVHC uses various system performance indices as judgements to find an available amount of PV installation capacity that can be accommodated on existing distribution system infrastructure without causing any violation. Generally, approaches for PVHC assessments are implemented by iterative power flow calculations with stochastic PV deployments so as to observe the operation impacts for PV installation on distribution systems. Determination of the stochastic PV deployments in most of traditional PVHC analysis methods is automatically carried out by the program that is using random selection. However, a repetitive problem that exists in these traditional methods on the selection of the same PV deployment for a calculation was not previously investigated or discussed; further, underestimation of PVHC results may occur. To assess PVHC more effectively, this paper proposes an improved stochastic analysis method that introduces an innovative idea of using repetitiveness check mechanism to overcome the shortcomings of the traditional methods. The proposed mechanism firstly obtains all PV deployment combinations for the determination of all possible PV installation locations. A quick-sorting algorithm is then used to remove repetitive PV deployments that are randomly selected during the solution procedure. Finally, MATLAB and OpenDSS co-simulations implemented on a small distribution feeder are used to validate the performance of the proposed method; in addition, PVHC enhancement by PV inverter control is investigated and simulated in this paper as well. Results show that the proposed method is more effective than traditional methods in PVHC assessments.

Keywords: PV hosting capacity; distribution system; power quality; stochastic analysis; OpenDSS; PV inverter control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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