Volt/var control (VVC) is one of the primary functions distribution management system aiming at optimum operation power networks while respecting all their operational and security constraints. However, recent huge integration highly stochastic distributed generation (DG) sources with grid presents a significant challenge to traditional VVC schemes, which assume future be perfectly known. This paper two-stage chance constrained optimization scheme handle these nodal uncertainties guarantees...

This paper presents a two-stage three-phase solar photovoltaic (PV) system, which is controlled through novel enhanced second order generalized integrator (ESOGI) based control technique. The proposed ESOGI used for fundamental component extraction from nonlinear load current and distorted grid voltages. effectively simultaneously manages to address the DC offset, inter-harmonic delay problems of traditional SOGI. In addition, this technique provides power factor correction, harmonic...

This paper presents a fully distributed algorithm for the stochastic Volt/VAr control (VVC) problem in active distribution networks. Exact convexification of VVC is achieved through use second-order cones on continuous relaxation original optimization structure. The global optimum solution relaxed obtained application alternating direction method multipliers (ADMM). In order to minimize effect rounding off final solution, an adaptive threshold discretization technique used. A two-stage...

This paper proposes a completely non-centralized Volt/VAr control (VVC) algorithm for active distribution networks which are faced with voltage magnitude violations due to the high penetration of solar photovoltaics (PVs). The proposed VVC employs two-stage architecture where settings classical devices (VCDs) decided in first stage through distributed optimization engine powered by alternating direction method multipliers (ADMM). In contrast, PV smart inverters instructed second linear Q(P)...

The global optimum of the optimal power flow (OPF) problem can be sought in various practical settings by adopting conic relaxations, such as second order cone programs (SOCPs) and semi-definite (SDPs). However, ZIP (constant impedance, constant current, power) exponential load models are not directly amenable with these solvers. Thus, mostly treated loads literature. In this letter, we propose two simple methods to approximate static good accuracy. proposed perform much better than...

Converter-connected renewable energy sources (RES) in the distribution network alter power flow network. Often, grid reinforcements and additional local reactive are needed to maintain steady state operation. RES is an accessible source for system operators optimize operations. However, non-linearity non-convexity converter equations make their modelling challenging, which further results under-utilization of capability from these sources. Oftentimes, converter-connected generator partially...

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The technology of solar photovoltaic (PV) systems has seen remarkable boom the past decade and remains central in decarbonization and post-COVID19 recovery plan many countries worldwide. However, global experience shows that PV installations start to level off networks with certain integration levels. Among various reasons, such as financing, regulations, markets etc., this report focuses takes a deep look on technical challenges act barriers against further and develops roadmap with...

As one of the most significant part carbon neutralisation, rapid growth electric vehicle (EV) market in past few years has greatly expedited transport electrification, which, however, brought new challenges to power system including isolated distribution network for commercial and industrial set up. Stochastic complex EV behaviours would violate permissible operation region increase costs operators. To address these problems, a chance-constrained smart charging strategy DC microgrid (DCMG)...

Volt/var control (VVC) is one of the primary functions distribution management system aiming at optimum operation power networks while respecting all their operational and security constraints. However, recent huge integration highly stochastic distributed generation (DG) sources with grid presents a significant challenge to traditional VVC schemes, which assume future be perfectly known. This paper two-stage chance constrained optimization scheme handle these nodal uncertainties guarantees...

This paper presents a fully distributed optimization scheme for solving the load flow model of radial distribution networks. The consensus based alternating direction method multipliers (ADMM) is used to realise proposed framework. To ensure that ADMM algorithm converges exact solution, convexification achieved through second-order conic relaxations. gives way incorporate network within optimal power solvers. exactness framework problem shown numerical simulations on UKGDS 95-bus and IEEE...

<div>This paper proposes a completely non-centralized Volt/VAr control (VVC) algorithm for active distribution networks which are faced with voltage magnitude violations due to the high penetration of solar photovoltaics (PVs). The proposed VVC employs two-stage architecture where settings classical devices (VCDs) decided in first stage through distributed optimization engine powered by alternating direction method multipliers (ADMM). In contrast, PV smart inverters instructed second...

With the fast expansion of power grid and increasing complexity due to modern equipment, flow models with non-convexity long computing time are not suitable for network calculation optimization problems. Therefore, this paper proposes a linearized branch model (LBF) considering line shunts (LBFS). The strength LBF lies in its linear mathematical structure, hence convex nature, which is primarily achieved by regarding apparent as current magnitude. Moreover, accuracy nodal voltage magnitude...

Peer-to-peer (P2P) energy trading, commonly recognized as a decentralized approach, has emerged popular way to better utilize distributed resources (DERs). In order manage this user-side approach from system operator's point of view, paper proposes an optimal operation for distribution operators (DSO), comprising internal prosumers who engage in P2P transactions. The DSO is assumed be financial neutral entity, holding the responsibility aggregating surplus and deficit demand after their...

Converter-connected renewable energy sources (RES) in the distribution network alter power flow network. Often, grid reinforcements and additional local reactive are needed to maintain steady state operation. RES an accessible source for system operators optimize operations. However, non-linearity non-convexity converter equations make their modelling very challenging, which further results under-utilization of capability from these sources. This paper presents approach incorporate a convex...

Operating an active distribution network (ADN) in the absence of enough measurements, presence distributed energy resources, and poor knowledge responsive demand behaviour is a huge challenge. This paper introduces systematic modelling response which then included Forecasting Aided State Estimation (FASE) for better control network. There are several innovative elements tuning parameters FASE-based, profiling, aggregation. The comprehensive case studies three UK representative scenarios...

With the fast expansion of power grid and increasing complexity due to modern equipment, flow models with non-convexity long computing time are not suitable for network calculation optimization problems. Therefore, this paper proposes a linearized branch model (LBF) considering line shunts (LBFS). The strength LBF lies in its linear mathematical structure, hence convex nature, which is primarily achieved by regarding apparent as current magnitude. Moreover, accuracy nodal voltage magnitude...

With the fast expansion of power grid and increasing complexity due to modern equipment, flow models with non-convexity long computing time are not suitable for network calculation optimization problems. Therefore, this paper proposes a linearized branch model (LBF) considering line shunts (LBFS). The strength LBF lies in its linear mathematical structure, hence convex nature, which is primarily achieved by regarding apparent as current magnitude. Moreover, accuracy nodal voltage magnitude...

<div>This paper proposes a completely non-centralized Volt/VAr control (VVC) algorithm for active distribution networks which are faced with voltage magnitude violations due to the high penetration of solar photovoltaics (PVs). The proposed VVC employs two-stage architecture where settings classical devices (VCDs) decided in first stage through distributed optimization engine powered by alternating direction method multipliers (ADMM). In contrast, PV smart inverters instructed second...