access icon free Strategically incorporation of RES and DSTATCOM for techno-economic-environmental benefits using search space reduction-based ICSA

© The Institution of Engineering and Technology
Received 12/12/2017, Accepted 02/01/2019, Revised 18/11/2018, Published 15/01/2019

In this study, an improved crow search algorithm (ICSA) is proposed for the optimal allocation of renewable energy sources (RESs) and distributed static compensator in a practical distribution network (PDN) to improve system voltage, reduce line losses, maximise economic benefit, and decrease pollutants’ emission. To improve the performances, the control parameters of ICSA are logically tuned to make them adaptive with the iteration. Voltage stability index is used to identify healthier and weaker buses (HBs and WBs) of the system and comparative performance analysis is conducted after placing the devices at the identified HBs and WBs. The proposed technique is applied for both the cases of reduced search space (only WBs) and full search space (all the load buses) to establish that the optimal placement is always obtained at the WBs of the network. The optimal allocation for each type of device is conducted considering the time-varying characteristics of load demand and RES's power output, and their optimal performances are analysed in details, which will be helpful for the distribution companies to identify the most suitable device for incorporating in PDN. Furthermore, to show the effectiveness, the proposed algorithm is also compared with other algorithms.

Inspec keywords: power system security; static VAr compensators; renewable energy sources; power system stability; distributed power generation; distribution networks; optimisation

Other keywords: control parameters; comparative performance analysis; voltage stability index; weaker buses; load buses; search space reduction-based ICSA; practical distribution network; reduced search space; distribution companies; PDN; improved crow search algorithm; line losses; optimal placement; techno-economic-environmental benefits; identified HBs; optimal performances; static compensator; pollutants; suitable device; strategically incorporation; maximise economic benefit; system voltage; renewable energy sources; optimal allocation; healthier buses; RES's power output; only HBs

Subjects: Distribution networks; Power system control; Optimisation techniques; Distributed power generation; Control of electric power systems; Power system management, operation and economics; Optimisation techniques

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