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The following topics are dealt with: real-time stability; SCADA/EMS; HVDC; intelligent data mining; protective relaying; VArs; advanced control; power system measurement; economic operation; wind power; planning; asset management; power electronics; FACTS; CIM; distribution system; communication protocol; power engineering education; transformers; electric machinery; switchgear; substation; generation...
This paper describes the approach taken by Transelectrica S.A. to real-time stability assessment. Seamlessly integrated with the real-time network analysis sequence is a fast voltage and steady-state stability application that runs automatically after each successful state estimate. The calculations are performed both for the entire interconnected system of Romania and for the areas connected via...
Implementation details and performance results of the Brazilian system operator dynamic security assessment are presented. It describes the adopted models, analytical methods and functions. Important implementation issues such as network size, contingency screening, EMS integration, user interface and quality of data are also commented
Southern Company Services (USA) has successfully implemented a continual transient security assessment (TSA) process utilizing Powertech's TSAT software at their system control center. Southern's EMS provides an updated powerflow case from the real-time state estimator to the TSAT application through Powertech's DSA Manager on an hourly (24times7) basis. One unique aspect of the enhanced state estimator...
High voltage direct current (HVDC) technology has characteristics which make it especially attractive in certain transmission applications. The number of HVDC projects committed or under consideration globally has increased in recent years reflecting a renewed interest in this field proven technology. New HVDC converter designs and improvements in conventional HVDC design have contributed to this...
The development of the Pacific HVDC Intertie (PDCI) is traced from inception in the 1960s to present day. The PDCI has undergone a number of changes and upgrades over the 36 years since its construction. The changes in the PDCI mirror the advances in HVDC technology and renovated the southern converter station at Sylmar completely replacing nearly all of the converter equipment with modern high power...
Planning HVDC facilities presents special physical and commercial challenges, especially in systems with deregulated markets. This paper describes some of the issues that must be addressed to successfully plan and operate an HVDC facility. Three case studies are discussed. It is beneficial to implement procedures that are as simple as possible yet maximize the secure and economical operation of the...
This paper presents an overview on applications of data mining to power systems. DM plays an important role to extract rules or knowledge through database. Power systems have complicated characteristics due to the nonlinearity. To grasp the nonlinear relationship between input and output variables, the data mining techniques help power system operators to smooth power system operation and planning...
The objective of this paper is to describe an artificial intelligence based methodology to estimate the daily demand curve of low voltage electrical energy consumers of a electricity distribution company. This methodology uses SOM-self-organizing maps and rough sets to do the estimation. The SOM is used to find a set of curves prototypes, which represents the space of possible curves of the consumers,...
Factors such as uncertainty associated to fuel prices, energy demand and generation availability, are on the basis of the agents major concerns in electricity markets. Facing that reality, price forecasting has an increasing impact in agents' activity. The success on bidding strategies or on price negotiation for bilateral contracts is directly dependent on the accuracy of the price forecast. However,...
This paper presents the results of an on-going survey of electricity price forecasting techniques developed over the last fifteen years or so. The main focus of this survey is the method of forecasting electrical energy prices on a pool-style energy forward market (typically, one-day ahead). Because the British market began operating its initial pool and real data became available in 1990, this survey...
This panel paper summarizes wind power development in recent years, and describes challenges of wind power integration. During the panel session, data mining and analysis techniques will be proposed to help solve these challenges
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