Planning against voltage collapse
Several systems have experienced voltage collapse, and the Task Force's questionnaire indicates a need for a widely accepted procedure for dealing with the voltage collapse problem in system planning. The object of this report is to present a procedure and to establish guidelines for the use of system planners in order to prevent voltage collapse.
The report contains an explanation of the voltage collapse problem, and how it is influenced by transmission system characteristics, the steady-state and the dynamic behaviour of the Joad, as well as the overall system control. Experiences from actual system disturbances are examinated together with conclusions from the questionnaire. Prefault conditions are discussed, and it is suggested that the use of n-2 security in reactive planning could be justified in order to obtain a probability of failure due to voltage collapse consistent with normal practice regarding transient stability. A planning procedure based on a normal load-flow program is established, and practical guidelines for planners are drawn up. This procedure is much faster thon procedures based on dynamic calculations. Finally an example to illustrate the method is given.
File Size: 10 MB
Pages NB: 21
may download free of charge all publications including most recent ones
may download free of charge publications over three years old and purchase all publications
Evaluation of lightning shielding analysis methods for EHV and UHV DC and AC transmission lines
Application of phasor measurement units for monitoring power system dynamic performance
Voltage Source Converter (VSC) HVDC for Power Transmission - Economic Aspects and Comparison with other AC and DC Technologies
Update of Service Experience of HV Underground and Submarine Cable Systems
Recommendations for testing of long AC submarine cables with extruded insulation for system voltage above 30 (36) to 500 (550) kV (This TB replaces electra article ELT_189_1)
Integration of large Scale Wind Generation using HVDC and Power Electronics
For any questions in connection with the on-line library, contact:
Publications and Editions Manager