A method for real-time updating of bus voltage control limit value according to daily voltage fluctuation rate
A bus voltage control and voltage control technology, applied in the direction of AC network voltage adjustment, etc., can solve the problems of different power grid structures, complex operation modes, difficult control and management, etc.
Inactive Publication Date: 2016-06-08
STATE GRID CORP OF CHINA +2
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Also taking the 220kV busbar as an example, the range of variation throughout the day cannot exceed 11.5kV. Due to the large number of 220kV busbars in the power grid and their wide distribution range, the grid structures in the regions are different and the operation methods are complicated, so it is difficult to adopt a unified voltage limit. value control and management
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[0027] The method for updating the control limit of the bus voltage in real time according to the daily voltage fluctuation rate proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:
[0028] (1) In the automatic voltage control system of the power system, when 0:00 comes every day, the voltage control upper limit value of each bus in the power system Set to the maximum value allowed by the power system operation Control the lower limit of the voltage Set to the minimum value allowed by the power system operation
[0029] (2) When each 1-minute sampling period comes, set the current time as T j , for all buses in the automatic voltage control system, perform the following steps in sequence:
[0030] (2-1) Collect the real-time voltage measurement value of bus i And stored in the real-time database of the automatic voltage control system;
[0031] (2-2) From 0 o'clock on the current day to the current time T ...
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The invention relates to a method for updating the busbar voltage control limit value in real time according to the voltage daily volatility, and belongs to the technical field of automatic voltage control of power systems. The method comprises the steps that busbar voltage is collected in real time every one minute according to a busbar voltage daily volatility control target, the maximum value and the minimum value of the busbar voltage obtained on that day are tracked, and the busbar voltage volatility obtained on that day is calculated; when the busbar voltage volatility obtained on that day exceeds an early-warning value of the control target, the busbar voltage control upper limit value and lower limit value are calculated and corrected in real time, the corrected limit values are used for generating a busbar voltage control strategy through an automatic voltage control system, and therefore the operation requirement that the busbar voltage daily volatility is controlled in a target value range is met.
Description
technical field [0001] The invention relates to a method for real-time updating of bus voltage control limit value according to voltage daily fluctuation rate, in particular to real-time update of bus voltage control limit value according to voltage daily fluctuation rate control target after the automatic voltage control system is put into closed-loop control, belonging to electric power system automatic Voltage control technology field. Background technique [0002] Automatic voltage control (hereinafter referred to as AVC, AutomaticVoltageControl) system is an important means to achieve power grid security (increase voltage stability margin), economy (reduce network loss), and high-quality (increase voltage qualification rate) operation. The AVC system architecture is based on the grid energy management system (EMS), which can use the real-time operation data of the grid to scientifically make the best reactive power and voltage adjustment plan from the perspective of ove...
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IPC IPC(8): H02J3/12
CPCH02J3/12
Inventor 张冰邱夕兆杨明辉傅磊王亮汤磊王小波李小江武诚马琳琳李新王彬郭庆来
Owner STATE GRID CORP OF CHINA