distributed electricity Articles
-
Price volatility forecasting using artificial neural networks in emerging electricity markets
In the adaptive short–term electricity price forecasting, it may be premature to rely solely on the hourly price forecast. The volatility of electricity price should also be analysed to provide additional insight on price forecasting. This paper proposes a price volatility module to analyse electricity price spikes and study the probability distribution of electricity price. Two methods are used ...
-
Bare wires and bare conductor products
The main features of bare conductors are: pure conductor metal, without insulation and sheath layers, such as steel-cored aluminum stranded wires, copper-aluminum busbars, electric locomotive wires, etc.; the processing technology is mainly pressure processing, such as smelting, calendering, drawing The products are mainly used in suburban, rural areas, user main lines, switch cabinets, etc. ...
-
Magnetising inrush current in transformers: an overview
In India, the failure rate of distribution transformers has been reported very high especially in the rural and remote areas. In these areas, frequent inrush current is produced in distribution transformers during their energisation. The generation of inrush current during each energisation may be dangerous for health of the distribution transformers. This has motivated the authors for extensive ...
-
The strategic activities of electricity network operators within changing electricity distribution industry
The electricity network business is facing new challenges due to deregulation and market changes, customer requirements, while at the same time current service markets are advancing. New, optimised business models are required to support the development of business processes, and there is a need to determine the core businesses for electrical utilities in order to know the direction into which ...
-
An efficient coupled GA and load flow algorithm for optimal placement and sizing of distributed generators
A genetic algorithm is used in conjunction with an efficient load flow programme to determine the optimal locations and sizing of the predefined DGs within MATLAB software. The best location for the DGs and the sizing of the DGs are determined using the genetic algorithm. The branch electrical loss is considered as the objective function and the system total loss represent the fitness evaluation ...
-
Societal reaction to the power frequency electric and magnetic field effects of electric utility systems
The power frequency electric and magnetic field (EMF) effects are associated with the transmission and distribution lines of electric utility systems, and also with work environments, office machines, illumination sources, home appliances, computers, etc. Most of these facilities are considered indispensable components of everyday life in population centres, office complexes and industrialised ...
-
Why smart utilities are embracing distributed electricity
Power companies that take initiative now can position themselves for a bright future in tomorrow’s clean energy economy The growth of distributed energy generation, particularly in the form of solar energy, leaves the aging, monopolistic electric utility system a daunting choice: Come out swinging in defense of the status quo or boldly jump into the cockpit, put on the co-pilot’s hat ...
By Ensia
-
Decentralised and centralised energy: a property rights analysis
Interconnection between centralised and decentralised electrical power sources remains a contentious issue on technical, economic, and policy grounds. This paper considers the problem of interconnection as a property rights problem one that involves allocation conflicts and pressures for institutional change. We argue that the current policy approach to interconnection problems between ...
-
What is a distribution transformer?
Distribution Transformer: An Essential Component of Power Distribution Systems As you go about your daily life, you probably take for granted that electricity is readily available to power your home and business. However, there is a complex system in place that allows for the efficient distribution of electrical power, and one key component of this system is the distribution transformer. What ...
By Protrafo
-
Methodological basis to decide short-term investments in distribution systems under uncertainty in performance-based regulatory frameworks
This paper presents new concepts and methodological tools to decide the investments that electric distribution utilities must perform under regulatory frameworks based on performance (Performance Based Regulation or PBR). The proposal is focused on short-term investments. In this work, the subject of hierarchical expansion planning and the basis for an investment decision methodology are ...
-
Renewable portfolio standard and certificates trading on the Dutch electricity market
In 1996, the Dutch distribution companies signed a voluntary agreement to reduce CO 2 emissions. As one element of the agreement, a renewable portfolio standard (RPS) for the electricity distribution companies with certificates trading was introduced (groen label system). The analysis reveals that the total volume of the obligation (3%) can be considered as modest. In addition, it seems more ...
-
Power quality evaluation in deregulated power system using matrix method
Power quality has emerged as a challenging area in the context of deregulation, wherein electricity distribution buyers and sellers carry out mutually agreed-upon exchanges. A market for active power and reactive power is installed in many places as a result of a deregulation process. However, the power-quality-related market is in the developing stage. For a given site, the power quality ...
-
Performance evaluation of Indian electrical distribution utilities in the post Electricity Act 2003 era
Indian electricity sector constitutes a contrast a highly sophisticated modern generation and transmission system, but a very poor distribution system in several utilities. Despite the realisation of the importance of the distribution sector, the performances of Indian distribution utilities have not been measured empirically so far. The post Electricity Act 2003 (EA 2003) era has witnessed ...
-
Dispachability improvement of wind generation by the Virtual Power Producers
Today, there is a growing environmental concern about where the energy that we use comes from, bringing the attention on renewable energies. However, the use and trade of the renewable energies in the market seem to be complicated because of the lack of guarantees of generation, mainly in the wind farms. The lack of guarantees is usually addressed by using a reserve generation. The aggregation of ...
-
Integrated framework for energy loss allocation in electric distribution systems under liberalised energy markets
This paper discusses an integrated framework for cost allocation of energy losses of electric distribution systems under liberalised energy markets. As key contribution is developed an allocation strategy based upon Locational and Uniform Incremental Prices. The locational incremental prices send efficient economical signals to distributed generators with incentives for loss minimisation and ...
-
Effect of distributed generation modelling on performance of distribution systems
Due to the continuous increase of distributed generation (DG) penetration into distribution systems, load flow analysis always needs improvement to be more flexible, fast and computationally efficient especially when integrating DG with existing distribution systems. The work in this paper is divided into two parts; in the first part a new algorithm is developed to solve the power flow problem ...
-
DSTATCOM for power quality improvement in a four-wire electric distribution system
This paper deals with the simulation of a Distribution Static Compensator (DSTATCOM) for power quality improvement in a four-wire electric distribution system. A three-phase Insulated Gate Bipolar Transistor (IGBT)-based Current-Controlled Voltage Source Inverter (CC-VSI) with a DC bus capacitor is used as a DSTATCOM. The DSTATCOM improves the supply power factor, eliminates harmonics, provides ...
-
Modelling and simulation of faults in synchronous generators for robust numerical protection
When an internal fault occurs in a synchronous generator, the symmetry between the parallel paths of the winding is broken and different currents flow in them, due to unsymmetrical magnetic linkage between the stator windings. The aim of this paper is to present a simulation model to investigate the effect of internal fault on the parallel path currents of a large synchronous generator using ...
-
Corporate restructuring of the global energy industry: an overview of events and issues
Before 1980, outside of the world's few major integrated oil companies, only a handful of energy companies could be considered multinational. In 1999, in addition to the scores of petroleum companies that can be classified as multinational, the scope of many electricity companies and natural gas transmission companies has become increasingly global. Through mergers, acquisitions, joint ventures, ...
-
10 Questions to Ask About Scaling On-Grid Renewable Energy
This working paper was co-written with Shantanu Dixit, Coordinator of Prayas, Energy Group. “10 Questions to Ask About Scaling On-Grid Renewable Energy” is a framework designed to facilitate multi-stakeholder engagement for improving renewable energy policy. It is part of the “10 Questions to Ask Series” which aims to build the capacity of electricity sector ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you