Method and device for determining steady-stage voltage limit of half-wavelength power transmission line

Abstract

The invention provides a method and device for determining a steady-stage voltage limit of a half-wavelength power transmission line. The method comprises the steps of building a half-wavelength power transmission line distribution parameter model; determining the distances from the positions respectively corresponding to a maximum value and a minimum value of the steady-state voltage on the half-wavelength power transmission line to the tail end of the half-wavelength power transmission line according to the half-wavelength power transmission line distribution parameter model; and determining the maximum value and the minimum value of the steady-state voltage according to the distance from the positions respectively corresponding to the maximum value and the minimum value of the steady-state voltage on the half-wavelength power transmission line to the tail end of the half-wavelength power transmission line. The method and device provided by the invention for determining the steady-state voltage limit of the half-wavelength power transmission line can be applied to theoretical and simulation analysis of a half-wavelength power transmission system and operation and control for an actual half-wavelength line, facilitate the system operation and analysis personnel to adopt effective control measures and improve the safe and stable operating level of an electric power system.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method and device for determining the steady-state voltage limit of a half-wavelength transmission line. Background technique [0002] Half-wave power transmission refers to the ultra-long-distance three-phase AC power transmission whose electrical distance is close to a power frequency half-wave, that is, 3000 km (50 Hz) or 2600 km (60 Hz). As a new ultra-long-distance and large-capacity power transmission form, the half-wave transmission line has reactive power self-balancing throughout the line and does not require reactive power compensation equipment. The system is simple, the number of equipment is small, the economy is good, and the reliability is high. , Transnational power transmission and power supply in remote areas are highly competitive. [0003] Since the Soviet scholar A.A.Wolf and others proposed the half-wave AC power transmission method in the 1940s, re...

AI Technical Summary

Problems solved by technology

Existing literature has qualitatively analyzed its voltage distribution from two aspects of incoming and reflected waves and reactive power demand. There is no accurate quantitative analysis of the maximum and minimum voltages and their corresponding specific locations. The operation control after putting into operation is of great significance and requires a new technical solution

Images