power network Articles
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Spectral analysis of a real power network
We present a spectral analysis of a significant part of the Italian bulk power system. Spectral analysis applied to graphs is not a new tool, but analyses of the real world, especially of technological networks, currently are lacking. We show the spectral pattern of a high voltage power network, calculate the ratio between the smallest and largest non–zero Laplacian eigenvalue to check its ...
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A practical transmission loss allocation methodology for deregulated power systems
In any power network, the cost of electrical losses constitutes a large component of network operating costs. As a result of introduction of competition under deregulation, it has become much more important to be able to determine a strategy for fair allocation of losses among the stakeholders. This paper suggests a quadratic loss formula with nodal power injections as independent variables. The ...
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Power market - Case Study
The Client Power industry The customer is a leader in the power industry who focuses on creating next-generation power technologies as well as improving the power networks of today. Their innovative solutions aim to make power more affordable, reliable, accessible and ...
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Overview of Power Injector for POE
Power injector for POE, also known as PoE power supply, is the PSE terminal equipment in PoE power supply system. There are two kinds of PSE devices, one is power switch for ethernet, the other is power supply for ethernet. The Ethernet power switch is used for Endpoint and the Ethernet power supply is used for Midspan. Power injector for POE is also called POE combiner, POE injector. Poe ...
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Optimal power flow with benefit maximisation in coordinated bilateral power market
This paper presents an optimal power flow solution in a coordinated bilateral power network using AC power flow–based methodology. The main objective of the present work is to maximise the benefits in power market. The interior point (IP)–based optimisation method has been used for finding the global solution. The solution has been obtained by announcement of the system information. This ...
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A self-tuning optimised unscented Kalman filter for voltage flicker and harmonic estimation
This paper presents a novel technique for estimation of two important power quality problems like voltage flicker and harmonics in power networks using an unscented Kalman filter (UKF) algorithm. The fluctuating voltage of a power network resulting in voltage flicker is tracked for estimating its envelope, voltage magnitude, and frequency. Further, the unscented filter is used to estimate ...
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Pushing technology to where the market will be: the case of Nokia
Nokia has evolved to a digital convergence company. Its telecom past has taught it important lessons in the power of networking. It continues to value open standards while it pursues innovations in the evolving areas of mobile phones, networks, multimedia and enterprise solutions. Nokia Research Center has aligned its research to maintain leading edge competencies in the relevant technologies, at ...
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Reciprocally altruistic agents for the mitigation of cascading failures in power grids
Cascading failures in electrical power networks often come with disastrous consequences. A variety of schemes for mitigating cascading failures exist, but the vast majority depend upon centralised control architectures. Centralised designs are frequently more susceptible to communications latency and bandwidth limitations and can be vulnerable to random failures and directed attacks. This paper ...
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Controlling cascading failures with cooperative autonomous agents
Cascading failures in electricity networks often result in large blackouts with severe social consequences. A cascading failure typically begins with one or more equipment outages that cause operating constraint violations. When violations persist in a network, they can trigger additional outages which in turn may cause further violations. This paper proposes a method for limiting the social ...
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Weakest bus identification for optimal location for FACTS systems in multimachine power network
As a result of the electronic revolution in power electronics technology, a number of control devices under the term flexible AC transmission system (FACTS) have been proposed and implemented and this has led to improvements in efficient energy transfer, reduced looses and maximised use of existing infrastructure. FACTS controllers have been designed using high power electronic system components, ...
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A method for the study of cascading effects within lifeline networks
The following research is in keeping with the current international and national trend to establish effective facility management plans, based on antagonistic notions of maximal production and minimal risks. The application of this approach to lifeline networks is complex, considering that the failure of these networks can cause extensive consequences for populations and upon socio-economic ...
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Voltage stabilisation of SMES VSI DC-link and compensation of reactive power by SMES using optimised switching strategies
This paper presents a novel and optimised switching strategy and control approach for a three-level two-quadrant chopper in a three-level neutral point clamped (NPC) voltage source inverter (VSI) superconducting magnetic energy storage (SMES). Using the proposed switching strategy, the voltage of the inverter capacitors in SMES can be independently controlled. Also, the minimum power and ...
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Energy and touch-information for body-worn ubiquitous computing
Addressing a key issue in ubiquitous computing and power generation, this paper presents several novel techniques that use the human body itself as an energy resource for power generation and as a biological data network. Particularly focusing on power from human walking, we conducted comprehensive studies determining and comparing critical factors such as efficiencies and power generation levels ...
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Renewable energies in Tunisia: trends and competitiveness till 2030
The present work deals with the application of international standards on Tunisian power network in order to predict trend and competitiveness of electric power plants. It was made in partnership with the Renewable Energy Department of the Tunisian Electricity and Gas Company (STEG–PEREE). Such work is considered as the first strategic study held for the help of STEG and national development ...
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Particle swarm optimisation for security constrained optimal power flow including TCSC
The planning, operation and control of power system are having great significance governed by security considerations. In an interconnected power system network obtaining maximum performance, maintaining system stability limits and facilitating efficient system operation are the challenging tasks. The estimation of effect of contingencies and planning suitable measures are desirable issues for ...
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Correlating empirical data and extended topological measures in power grid networks
Power grids are considered complex networks. Their structure and dynamics have been thoroughly studied and many topological measures have been used to classify them, evaluate their behaviour or model their response to malfunctions. Results have been theoretical and correlations between real dynamical behaviour (i.e., major events) and structural measures have not yet been found. New electrically ...
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Nuclear Power Plant in Operation - Project
Scope: Monitor trucks and pedestrians entering and exiting a nuclear power plant Solutions: RPMs, networked detection system, combination of static and mobile ...
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The impact of the protection scheme of converter-connected distributed generation on power system transient stability
In this paper the impact of the protection scheme of converter-connected (power electronic-interfaced) Distributed Generation (DG) on power system transient stability is investigated. Two simulation setups are used for this purpose. In the first setup, a small/simple test system is used and the converter-connected DG is modelled as a practical three-phase full-bridge Voltage Source Converter ...
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This Careers Week 2022, help shape your future
We at Schneider Electric believe that developing our employees to their full potential is the best way for us to achieve our company mission and purpose. Everyone deserves the opportunity to pursue a career that’s uniquely theirs. Taking part in Career Week is just one way we empower our employees to take ownership of their own development, with the support of their managers and made ...
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Risk assessment of catastrophic failures in electric power systems
The declining reliability of the US electric power system is raising major concerns among both politicians and power engineers in the USA. One of the reasons put forward by the North Electric Reliability Council (NERC) is the detrimental role played by the protection systems during large disturbances, which tend to help the perturbations to propagate through over-tripping of fault free system ...
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