Real time evaluating method of voltage stability

A voltage stability and real-time data technology, applied in the direction of measuring current/voltage, AC network voltage adjustment, measuring electricity, etc., can solve the problems of large amount of calculation, how large the stability margin is, and it is difficult to meet real-time monitoring. Effect of suitability, good accuracy and linearity
CN101349731BActive Publication Date: 2010-12-01CHINA ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRIC POWER RES INST
Publication Date
2010-12-01

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Abstract

The invention provides a circuit tidal current index for resolving the problems such as that the high circuit tidal current causes the voltage decrease at the bus of the receiving end and the failure about the real solution of the circuit tidal current equation. The circuit tidal current index is applied for real-time voltage stabilization detection to provide a voltage stability real-time evaluation method, based on the circuit tidal current index. The method can simply and quickly evaluate the voltage stability of a power network and can scan and calculate the circuit tidal current index ofa full network line to fine the line of low voltage stability in the power network. Applied for the voltage stability real-time detection, the method can provide the change tread of the voltage stability of each line, to determine the initial point of the voltage stability problem.
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Description

A real-time evaluation method of voltage stability technical field The invention relates to a real-time evaluation method for voltage stability, which belongs to the field of power system analysis and control, and power system voltage stability real-time analysis and control. Background technique Voltage collapse accidents may occur in the main grid or in some regional grids. They are sudden and concealed, and are often difficult to detect clearly in the early stages of formation. This requires real-time and continuous monitoring of the operating status of the power system. At the same time, rapid data monitoring is required. Processing function and fast judgment function of system voltage stability, so as to find problems in time. The WAMS (WideAreaMeasurementsSystem, Wide Area Measurement System) system, which has received widespread attention in recent years, can capture real-time steady-state and dynamic information of various locations in a large-scale interconnected ...

Claims

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