Widespread interest in environmental issues is growing. Many studies have examined the effect of distributed generation (DG) from renewable energy resources on electric power grid. For example, various efficiently connect growing DG to current Accordingly, objective this study present an algorithm that determines location and capacity. purpose, combines particle swarm optimization (PSO) Volt/Va...

This paper develops a model-free volt-VAR optimization (VVO) algorithm via multi-agent deep reinforcement learning (DRL) in unbalanced distribution systems. method is novel since we cast the VVO problem networks to an intelligent Q-network (DQN) framework, which avoids solving specific model directly when facing time-varying operating conditions We consider statuses/ratios of switchable capacit...

The paper discusses power and especially voltage quality issues in the smart grid environment. New demands that are facing the distribution network, by introducing the concept of intelligent networks (Smart Grids), are presented. Some examples of non-compliance of laws and practices in Serbia are presented as well, as the illustration of lack of strategic planning in the field. Through several ...

Abstract With the increasing penetration of photovoltaics (PVs) in distribution networks, PV inverters and capacitor banks (CBs) should be well utilized for volt/var control tackle fluctuations uncertainty introduced by PVs. This paper proposes a multi-time-scale method to coordinate CBs, where complementarity between minute second-level promotes economic secure operations networks. Firstly, mo...

The increasing proliferation of distributed energy resources has posed new challenges to Volt/VAr control problems in distribution networks. To this end, paper proposes an automatic self-adaptive local voltage (ASALVC) by locally controlling VAr outputs resources. In ASALVC strategy, each bus agent can and dynamically adjust its droop function accordance with time-varying system changes. is ass...

Volt-VAR optimization (VVO) has been investigated extensively in power systems. However, under the era of integrated energy systems (IES), growing interdependencies between different complicate traditional VVO. This is further hardened by incurred gas quality problems due to hydrogen injection IES, produced widely applied power-to-gas (P2G) facilitates that couple and paper develops a two-stage...