The deregulation of power systems has brought several new entities in the electricity market place. There is need to assess the impact of Independent Power Producers (IPP), Non-Utility Generators (NUG) and Distributed Generators (DG) on system operation and stability. This paper is concerned with the problems related to system security and stability resulting from the increased proliferation of...

With the ever-increasing complexities in power systems across the worldwide, especially opening of electric power markets, it becomes more and more important to provide stable, secure, controlled and high quality electric power on today’s environment. The deregulation and competitive environment in the contemporary power networks will imply a new scenario in terms of load and power flow conditi...

In this paper, a new structure for reactive power market is presented. Considering reactive power losses caused by active power flow in the reactive power market is the main purpose of this paper. Hence, this study tries to improve reactive power market and create fair competition in reactive power generation.

Following the deregulation of electric power utilities around the globe, it has been widely acknowledged that quantifying the power transfer capability is of increasing importance in the operation and planning of interconnected power systems. This paper reports on the application of probabilistic distribution based interval arithmetic method to estimate the Available Transfer Capability (ATC) i...

The open access transmission of electrical power from a seller to a buyer through a transmission network owned by third group is called wheeling. One of the key issues in newly emerged deregulated electrical power market/industry is assessment of power wheeling prices. Assessment and analysis of electrical power wheeling prices has become a challenging task as now several factors are to be inco...

In this paper a new market Based approach for transmission expansion planning in deregulated power systems is presented. Restructuring and deregulation has exposed transmission planner to new objectives and uncertainties. Therefore, new criteria and approaches are needed for transmission planning in deregulated environments. In this paper we introduced a new method for computing the Locational ...

This paper presents the particle swarm optimization (PSO) technique to optimize the integral controller gains for the automatic generation control (AGC) of the interconnected power system before and after deregulation. Each control area includes the dynamics of thermal systems. The AGC in conventional power system is studied by giving step load perturbation (SLP) in either area. The AGC in dere...

Changes associated with economic deregulation of the U.S. electricity supply industry are causing major restructuring, with the potential to affect nuclear power safety. This study was undertaken to identify possible consequences of deregulation for nuclear power safety. A historical case study approach was adopted (using literature reviews and interviews), focusing on the U.S. aviation and rai...

Transmission pricing is an important issue in view of increased deregulation. Purpose of pricing is to recover cost of transmission encourage efficient use and investment. Wheeling charges for power transmission can be reduced by FACTS devices as they are effective means of controlling the power flow in the network. The unified power flow controller (UPFC) integrates properties of both shunt an...

In this paper a new approach for transmission pricing is presented. The main idea is voltage angle allocation, i.e. determining the contribution of each contract on the voltage angle of each bus. DC power flow is used to compute a primary solution for angle decomposition. To consider the impacts of system non-linearity on angle decomposition, the primary solution is corrected in different itera...