# IET Generation, Transmission & Distribution

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Displaying Results 1 - 9 of 9
• ### Harmony search algorithm for transmission network expansion planning

Publication Year: 2010, Page(s):663 - 673
Cited by:  Papers (27)
| | PDF (485 KB)

Transmission network expansion planning (TNEP) is a very important problem in power systems. It is a mixed integer, non-linear, non-convex optimisation problem, which is very complex and computationally demanding. Various meta-heuristic optimisation techniques have been tried out for this problem. However, scope for even better algorithms still remains. In view of this, a new technique known as ha... View full abstract»

• ### Solving optimal power flow problems using a probabilistic α-constrained evolutionary approach

Publication Year: 2010, Page(s):674 - 682
Cited by:  Papers (1)
| | PDF (297 KB)

One of the most difficult tasks in any population-based approach is to deal with large-scale constrained systems without losing computational efficiency. To achieve such goal, a methodology based on two different techniques is presented. First, an evolutionary algorithm based on a cluster-and-gradient-based artificial immune system (CGbAIS) is used to improve computational time. For that, the CGbA... View full abstract»

• ### Assessment of system voltage sag performance based on the concept of area of severity

Publication Year: 2010, Page(s):683 - 693
Cited by:  Papers (9)
| | PDF (973 KB)

This study presents a new approach for voltage sag assessment based on the concept of area of severity (AOS). The network regions, where the fault occurrences will simultaneously lead to voltage sags at different sensitive load points, can be determined by performing an AOS analysis. The impact rankings of the network lines and buses are also addressed. The impact rankings are determined accordi... View full abstract»

• ### Scenario reduction for risk-averse electricity trading

Publication Year: 2010, Page(s):694 - 705
Cited by:  Papers (5)
| | PDF (516 KB)

Stochastic optimisation models used to identify risk-averse decisions in electricity futures markets are usually hard to solve because of the large number of scenarios representing the uncertain parameters involved. A novel scenario reduction technique is proposed to select those scenarios that, considering the risk aversion of the decision maker, best represent the original scenario set and make ... View full abstract»

• ### Development of a methodology for clustering electricity-price series to improve customer response initiatives

Publication Year: 2010, Page(s):706 - 715
Cited by:  Papers (7)
| | PDF (519 KB)

The aim of this study is to propose a methodology in order to obtain a better support management decisions in terms of planning of bids and energy offers in real-time energy markets. Specifically, the authors use self-organising maps and statistical Ward's linkage to classify electricity market prices into different clusters (high homogeneity inside each cluster). In the second stage, the authors ... View full abstract»

• ### Extended topological approach for the assessment of structural vulnerability in transmission networks

Publication Year: 2010, Page(s):716 - 724
Cited by:  Papers (24)
| | PDF (414 KB)

Power system vulnerability is a key concern in modern societies and many efforts have been devoted to its analysis. Recently, the wide domain of complex networks that can be used to assess the vulnerability of network systems has been applied to power grids as well with focus on the topological vulnerability of the transmission systems based on its structure in terms of the nodes and their connect... View full abstract»

• ### Optimal flexible alternative current transmission system device allocation under system fluctuations due to demand and renewable generation

Publication Year: 2010, Page(s):725 - 735
Cited by:  Papers (8)
| | PDF (657 KB)

This study proposes two methods for the optimal placement of flexible alternative current transmission system (FACTS) devices considering variations in demand and renewable generation output. The basic optimisation technique utilised is the differential evolution algorithm and the objective is to minimise the cost of generation. The static performance of the FACTS device is considered here. Simula... View full abstract»

• ### Renyi entropy-based classification of daily electrical load patterns

Publication Year: 2010, Page(s):736 - 745
Cited by:  Papers (8)
| | PDF (838 KB)

This study illustrates and discusses an original approach to classify the electricity consumers according to their daily load patterns. This approach exploits the notion of entropy introduced by Renyi for setting up specific clustering procedures. The proposed procedures differ with respect to typical methods adopted for electricity consumer classification, based on the Euclidean distance notion. ... View full abstract»

• ### Online estimation of distorted power system signal parameters

Publication Year: 2010, Page(s):746 - 755
Cited by:  Papers (3)
| | PDF (420 KB)

An algorithm based on the concept of Kalman filtering is proposed in this study for the estimation of power system signal attributes, like amplitude, frequency and phase angle. This technique can be used in protection relays, digital automatic voltage regulators (AVRs), distribution static compensators (DSTATCOMs), flexible AC transmission systems (FACTS) and other power electronics applications. ... View full abstract»

## Aims & Scope

IET Generation, Transmission & Distribution is intended as a forum for the publication and discussion of current practice and future developments in electric power generation, transmission and distribution.

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