2000 International Conference on Advances in Power System Control, Operation and Management, APSCOM-00

30 Oct.-1 Nov. 2000

Go

Filter Results

Displaying Results 1 - 25 of 59
  • Damping controller design for FACTS device. II. Controller structure and parameter optimisation

    Publication Year: 2000, Page(s):425 - 430 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (440 KB)

    A new approach to solve the instability problem, due to the interaction between the damping controller and FACTS thyristor circuit, is introduced. FACTS instability mode is detected in the design process so the structure and setting of the damping controller is achieved through a combined sensitivity coefficient (CSC) which automatically takes into account the damping of both the interarea and FAC... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modelling consumer's demand uncertainty in electricity forward contracts

    Publication Year: 2000, Page(s):455 - 459 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (384 KB)

    In the electricity market environment, forward contracts can be used to hedge, or mitigate, against market risks. Forward contracts between utilities and consumers determine the terms such as the agreed quantum of electricity and its price, penalties for nondelivery and compensation for failure to accept contracted energy. While it is widely appreciated that uncertainties of future conditions have... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Damping controller design for FACTS device. I. Damping signal and location selection

    Publication Year: 2000, Page(s):420 - 424 vol.2
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    A novel method suitable for modeling different flexible AC transmission systems (FACTS) components is introduced. A state-space model of the entire multimachine system can be automatically established irrespective of the system complexity and the choice of control signals. The system matrix can be expressed as a function of each system parameter, so a general expression of eigenvalue sensitivity i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Power market dynamic analysis

    Publication Year: 2000, Page(s):451 - 454 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    This paper concentrates on analyzing the dynamic performances of the power market. Firstly this paper proposes a dynamic mathematical model of the power market based on some assumptions and concepts. Then some aspects, such as the power flow computing, the stability, the fault analysis, and the frequency stability, etc. are analyzed using this model. The dynamic model and the conclusions in this p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Experience with partial discharge monitoring of high-voltage motors

    Publication Year: 2000, Page(s):306 - 310 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (320 KB)

    Partial discharge measurements on about 100 6.6 kV motors at the Lamma Power Station in Hong Kong are reported. Initial analysis shows the data to be repeatable and to demonstrate steady ageing effects; clear differences between motor types and duties, and the ease with which motors suffering abnormally high deterioration may be distinguished. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wireless access to SCADA system

    Publication Year: 2000, Page(s):553 - 556 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    The use of the wireless application protocol architecture to provide a wireless channel to access the database operating under the commonly used distributed network protocol system running for SCADA in the power process plant is discussed. A distributed network protocol (DNP) is developed to be applied in the SCADA systems while the terminals and RTUs are presently connected through local area net... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robust control design in AC/DC system

    Publication Year: 2000, Page(s):415 - 419 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (336 KB)

    This paper demonstrates how to design an H∞ based damping controller for an HVDC link to enhance system damping under different operating conditions. Numerator-denominator perturbation representation is used to represent the model uncertainty and the partial pole placement technique is employed to assign the critical mode to a specified location. A robust H∞ contr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The review of Chinese generating market competition

    Publication Year: 2000, Page(s):446 - 450 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    Following the worldwide trend of power industry deregulation, China has begun its competition in generation market since 1998. It is not a simple matter to establish the operational mode of the Chinese generating market, since there are some special problems to be faced. This paper introduces some differences comparing the generating market of China with that of other countries. This paper also de... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extraction of PD fingerprints using correlation learning

    Publication Year: 2000, Page(s):300 - 305 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    Partial discharge (PD) source identification using statistical parameters to describe PD distribution patterns is regarded as an important approach for insulation diagnosis. It has been proved that phase resolved (PRPD) and pulse height resolved (PHPD) PD distribution patterns are related to the characteristics of the PD. Statistical parameters describing distribution shapes of PRPD and PHPD patte... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A nonlinear TCSC control strategy for power system stability enhancement

    Publication Year: 2000, Page(s):576 - 581 vol.2
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (448 KB)

    In this paper, a nonlinear control scheme for the TCSC to dampen power oscillations and improve transient stability of a power system is presented. Based on a one-machine-infinite-bus system, a nonlinear mathematical model is established which is proven as an affine nonlinear system. With the help of the feedback linearization technique, the affine nonlinear model is exactly transferred to a linea... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An efficient two-stage load flow method for meshed distribution networks

    Publication Year: 2000, Page(s):537 - 542 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    A new efficient two-stage load flow method for meshed distribution networks is presented in this paper. First, a forward/backward sweep load flow method for radial distribution networks is reviewed. Based on the multi-port compensation theory, a two-stage method is then put forward to solve the load flow problem of meshed distribution networks. In the first stage, a meshed network is converted to ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Observations from measurements of the furfural content of oil samples from transmission transformers

    Publication Year: 2000, Page(s):317 - 321 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    The concentration of the chemical furfural in transformer oil is well known to be an indicator of the extent to which the paper insulation of the windings has deteriorated. However, the majority of publications on this topic are based on small-scale laboratory investigations with very little on field experience with power transformers. This paper reports the analysis of data on the concentration o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of loop equation for distribution network reconfiguration

    Publication Year: 2000, Page(s):548 - 552 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper proposes a method for reconfiguration of power distribution network to reduce power losses of the network. The current of original radial network and the current of the circulating network which consists of all the branches and links with resistance only and no loads, are superposed in order to work out the economic current distribution of the multiple loops mesh network. It can be prov... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ANN controlled battery energy storage system for enhancing power system stability

    Publication Year: 2000, Page(s):327 - 331 vol.2
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (320 KB)

    This paper describes an application of an adaptive artificial neural network (ANN) controller to continuously control the charging and discharging of a battery energy storage system (BESS) to improve the stability of an electric power system. The simulation studies have included a detailed model of the generator including its excitation controller and governor, as well as a comprehensive BESS mode... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A real-time transient stability assessment scheme for large-scale power systems based on fuzzy reasoning

    Publication Year: 2000, Page(s):410 - 414 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    A novel multi-layer TSA scheme is presented in this paper to tackle the fast transient stability assessment (TSA) problem for large-scale power systems. A sample-based correlation algorithm is proposed for screening the input attributes. Identification of the critical clustering and estimation of the stability level and CCT based on fuzzy reasoning are realized. Simulation tests confirm the feasib... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Remote sensing of overhead line conductor temperature using an infra-red sensor

    Publication Year: 2000, Page(s):385 - 389 vol.2
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    This paper describes the design and construction of a sensor for the remote temperature measurement of 400 kV overhead conductors using an infrared detector. Overhead line conductor sag increases with operating temperature; if a conductor is allowed to operate at an elevated temperature then the minimum safety clearance of the conductor may be exceeded. An additional concern is annealing of the co... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new method to calculate multiple power flow solutions

    Publication Year: 2000, Page(s):491 - 495 vol.2
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper presents a new method to calculate multiple power flow solutions. In using the concept of the homotopy continuation method and toroidal mapping, a general method to calculate multiple solutions of nonlinear equations is introduced. Using this method in the simple three nodes example, the decreasing of the number of solutions can be seen clearly as the load increases. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Series power quality compensator

    Publication Year: 2000, Page(s):441 - 445 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    Voltage sag, swell, asymmetry, flicker and harmonics in distribution system, made by faults in power system or the increasing use of large numbers of nonlinear and impactive loads, will result in power quality sensitive equipment operating abnormally and causing huge economic losses. The principles of a series power quality compensator, which is based on modern power electronics, are discussed and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transient stability evaluation based on network local dynamic measurement

    Publication Year: 2000, Page(s):340 - 343 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    In this paper, the novel quantitative assessment method based on local network dynamic measurements has been developed. Based on the topological energy function given by Bergen and Hill, a new style of stability criterion is suggested which is based on line measurement. The stability indices for lines, cutsets and power system according to features of transient energy in the lines is given, which ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Applying rough-set concept to neural-network-based transient-stability classification of power systems

    Publication Year: 2000, Page(s):400 - 404 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (456 KB)

    This paper proposes to apply the concept of lower and upper approximations of rough sets to a backpropagation neural network (BPNN) training for transient stability assessment (TSA). The BPNN-based TSA problem is treated as a 'rough classification' problem with an indiscernible boundary region between the stable and the unstable classes. With the rough-set concept, a novel semi-supervised learning... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Underground links by gas insulated transmission lines

    Publication Year: 2000, Page(s):295 - 299 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (448 KB)

    The concern to reduce the number of increasingly contested power transmission lines has led utilities and manufacturers as ALSTOM to search for new underground solutions. Today, the penetration of power lines into the heart of large cities is seriously hindered by the density of population and urban expansion. Solutions must also be found that allow power to be continuously transmitted whilst resp... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A low-cost parallel computing platform for power engineering applications

    Publication Year: 2000, Page(s):354 - 358 vol.2
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper develops and evaluates a low-cost parallel computing platform for the implementation of parallel algorithms in power engineering applications. The proposed approach utilises an existing local area network without incurring any additional hardware costs. Application of computational intelligence techniques based on the developed computing platform to the economic dispatch problem is outl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electricity tracing method of generation and loss cost allocation

    Publication Year: 2000, Page(s):571 - 575 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    Continuing trend toward deregulation has resulted in the need to assess what the impact of a particular generator or load is on the power system. A new method of tracing the flow of electricity in electrical networks is proposed which may be applied to assess how much of real and reactive power output from a particular generator goes to a particular load. It also allows the assessment of contribut... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hysteresis control over UPFC

    Publication Year: 2000, Page(s):376 - 379 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    An alternative control strategy of a UPFC, based on hysteresis control of the switches is presented. It is shown that a UPFC under hysteresis control will have nearly sinusoidal injected output current and voltage for reactive power and real power compensation while keeping the UPFC in its simplest configuration. Hysteresis control also promises a faster response (within cycle) when compared to tr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Co-ordination of transformer tap and capacitor operation for reactive power voltage control in a distribution primary substation

    Publication Year: 2000, Page(s):479 - 485 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (432 KB)

    This paper presents a method employing fuzzy dynamic programming (FDP) technique to determine a hourly dispatch schedule for the capacitor bank switching and on-load tap changer (OLTC) position in a distribution primary substation. The schedule co-ordinates OLTC and capacitor operation so as to reduce their number of operation while satisfying the constraints on bus voltage limits and the tolerabl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.