A5078519932- Electric Power System Optimization
- Power System Optimization and Stability
- Optimal Power Flow Distribution
- Smart Grid Energy Management
- Power System Reliability and Maintenance
- Microgrid Control and Optimization
- HVDC Systems and Fault Protection
- Power Systems and Technologies
- Power Systems Fault Detection
- Energy Load and Power Forecasting
- Smart Grid Security and Resilience
- Islanding Detection in Power Systems
- Renewable energy and sustainable power systems
- Power Systems and Renewable Energy
- Integrated Energy Systems Optimization
- Auction Theory and Applications
- Smart Grid and Power Systems
- Frequency Control in Power Systems
- Electric Vehicles and Infrastructure
- Advanced Battery Technologies Research
- ICT Impact and Policies
- Computational Physics and Python Applications
- Capital Investment and Risk Analysis
- Thermal Analysis in Power Transmission
- Global Energy Security and Policy
Imperial College London
2024-2025
Newcastle University
2019-2024
Skolkovo Institute of Science and Technology
2014-2022
Durham University
2000-2015
University of Edinburgh
2003-2009
Universities UK
2004-2006
Continuing trend towards deregulation and unbundling of transmission services has resulted in the need to assess what impact a particular generator or load is on power system. A new method tracing flow electricity meshed electrical networks proposed which may be applied both real reactive flows. The allows assessment how much output from station goes load. It also contributions individual generators (or loads) line loss-apportioning algorithm been introduced break down total loss into...
The drastic reduction of carbon emission to combat global climate change cannot be realized without a significant contribution from the electricity sector. Renewable energy resources must take bigger share in generation mix, effective demand response widely implemented, and high-capacity storage systems developed. A smart grid is necessary manage control increasingly complex future grid. Certain elements—renewables, storage, microgrid, consumer choice, appliances—increase uncertainty both...
This paper introduces a simple novel method of transmission supplement charge allocation based on topological analysis power flows in the network. The uses MW-MILE methodology but analyses share, not impact of, individual loads and generators line flows. results positive contributions from all users hence rescinding problem counterflows.
A power transmission system can be represented by a network with nodes and links representing buses electrical lines, respectively. Each line given weight, some property of the line, such as admittance or average flow at time. We use hierarchical spectral clustering methodology to reveal internal connectivity structure network. Spectral uses eigenvalues eigenvectors matrix associated network, it is computationally very efficient, works for any choice weights. When using admittances, reveals...
Research into transmission pricing and congestion management in interconnected power systems, such as those found USA Europe, requires an appropriate benchmark system to test different methodologies. Creation of a realistic is difficult utilities are often unwilling disclose details their own systems because commercial sensitivity security reasons. This paper presents development approximate model European which could be used study the effects cross-border trades. In creating load-flow...
The issue of congestion management in distribution networks by considering a methodology for generation curtailment due to voltage constraints is addressed. based on the contribution generators as quantified voltage-sensitivity factors. It has been shown that following simple proportionality rule not efficient and some alternatives, which give more outcome, have proposed. Influence network losses rules also shown. considerations illustrated using two 11 kV networks.
Cascading failure in electric power systems is a complicated problem for which variety of models, software tools, and analytical tools have been proposed but are difficult to verify. Benchmarking validation necessary understand how closely particular modeling method corresponds reality, what engineering conclusions may be drawn from tool, improvements need made the tool order reach valid conclusions. The community needs develop test cases tailored cascading that central practical...
The aim of this paper is to present a new method for the allocation generation capacity, which takes into account fault level constraints imposed by protection equipment such as switchgear. It simulates capacities and connections other networks using generators with quadratic cost functions. coefficients functions express preferences over connection points. relation between capacity subtransient reactance used during estimation currents. An iterative process allocates optimal power flow...
Wind generation must trade in forward electricity markets based on imperfect forecasts of its output and real-time prices. When the price differs for generators that are short long, optimal strategy be opportunity costs charges payments rather than a central estimate wind output. We present analytical results wind's strategy. In risk-neutral case, is determined by distribution available capacity, expected prices conditioned out-turn; our approach simpler more computationally efficient...
Intentional controlled islanding is an effective corrective approach to minimise the impact of cascading outages leading large-area blackouts.This paper proposes a novel methodology, based on constrained spectral clustering, that computationally very efficient and determines solution with minimal power flow disruption, while ensuring each island contains only coherent generators.The proposed methodology also enables operators constrain any branch, which must not be disconnected, excluded...
Power system inertia is falling as more energy supplied by renewable generators, and there are concerns about the frequency controls required to guarantee satisfactory performance. The majority of research into negative effect low has focused on poor dynamic response following major disturbances, when transient dip can become unacceptable. However, another important practical concern-keeping average deviations within acceptable limits-was mainly out sight community. In this manuscript, we...
The existing frequency control framework in power systems is challenged by lower inertia and more volatile injections. We propose a new for congestion management. formulate an optimization problem that rebalances power, restores the nominal frequency, inter-area flows maintains line below their limits way minimizes cost. cost can be squared deviations from reference generations, minimizing disruption last optimal dispatch. Our thus system security without interfering with market operation....
Emerging smart-grid-enabling technologies will allow an unprecedented degree of observability and control at all levels in a power system. Combined with flexible demand storage, they could procuring energy minimum cost environmental impact. That however presupposes real-time coordination individual households industries down the distribution level, generation transmission level. This is closely related balancing market economic dispatch (ED) problem, which currently does not take into...
In this paper, a hybrid measurement- and model-based method is proposed which can estimate the dynamic state Jacobian matrix system in near real-time utilizing statistical properties extracted from PMU measurements. The be used to detect identify network topology changes that have not been reflected an assumed model. Additionally, application of estimated online stability monitoring presented.
Soft Open Points (SOPs) are power electronic-based devices which can replace Normally (NOPs) in distribution networks. They improve network performance by enabling controllable transfer between adjacent feeders. This flexible meshing provide a wide range of services, including loss reduction, reduced renewables curtailment, improved reliability, reinforcement deferral, or flexibility services. paper proposes novel framework, based on the Cost–Benefit Analysis methodology, to quantify and...
This paper has applied the MW-MILE methodology to allocate transmission supplementary charge real and reactive power loads. The for usage of an individual asset is split into a nonlocational component, due unused capacity asset, locational actually used asset. latter allocated, using previously proposed electricity tracing method, loads in network.
In order to overcome problems related the marginal pricing of transmission costs, tracing methodology has been proposed as an alternative, most notably for cross-border trades in Europe. The is based on assumption that, at any network node, incoming flows are proportionally distributed among outcoming flows. This can be neither proved nor disproved physically and authors aim rationalise it. analysis presented here loss allocation problem. First it shown that proportionality leads cost which...
The aim of this paper is to present a method for the direct incorporation fault level constraints (FLCs) in optimal power flow (OPF) as tool network capacity analysis, i.e., generation expansion planning within an existing network. A mathematical methodology convert imposed by levels simple nonlinear inequality developed. No new variables are introduced OPF formulation describe additional constraints. Most common OPF-solving engines already have computational handle numerous constraints,...
This paper presents a scheme for supervisory control of wind farms. We concentrate on reduction power output variation, but the proposed can also be used system-wide controls that are related to such as frequency or damping swings. The may utilize either separate (external) energy storage device reserve achieved through part-loading one more turbines in farm. has been validated model farm with four turbines. Simulations have confirmed usefulness scheme. system is general and could other...
The paper starts with an overview of, and comparison between, the UCTE blackout of 2006 year 2003 blackouts in US Italy. main conclusion is that European utilities have not really learned lessons from 2003. Increased liberalisation electricity supply industry has resulted a significant increase inter-area (or cross-border) trades which often are properly accounted for when assessing system security. traditional decentralised way operating systems by TSOs, each TSO looking after its own...