A kind of AGC control method for asynchronous power grid with multiple direct current lines

Abstract

The invention discloses an AGC control method of an asynchronous power grid containing multiple DC lines. When establishing the AGC control model of the provincial control area, the DC converter station and supporting units under the jurisdiction of the power dispatching control sub-center inside the provincial power grid are taken as the provincial level For the internal equipment of the AGC in the control area, the units and DC lines under the jurisdiction of the power dispatching control sub-center are not considered as the boundary of the tie line. The present invention focuses on reducing the influence of the measurement quality on the AGC of the provincial control area after the increasing number of power dispatching control sub-center equipment, and solves the problem that the failure of the power dispatching control sub-center equipment may lead to the reverse adjustment of the AGC in the provincial control area. The power dispatching control sub-center and the provincial control area AGC carry out coordinated control to ensure the integrated coordinated control of the two-level dispatching, which reduces the daily operation pressure of dispatchers, thereby improving the operating efficiency of the power grid and improving the safe and stable operation of the power grid.

Description

Technical field [0001] The present invention relates to an asynchronous grid AGC control method containing a plurality of DC lines, which belongs to the field of power grid regulation technology. Background technique [0002] China's energy resources and consumption distribution is unbalanced, in order to achieve a larger range of water and fire, the scenery complementary, large-scale delivery and optimization is required to vigorously develop special high voltage DC transmission technologies suitable for remote and large-capacity transmission. With the continuous implementation of the DC line, the fast-flow conveying capacity is rapidly increased, DC delivery, and the two-end power grid faces the problem with the difficulty of the automation system caused by DC line equipment, some DC shift stations have only single Direct acquisition of data sources, the existing scheduling management system cannot guarantee the preparation and reliability of the contact line, which is not cond...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a kind of asynchronous power grid AGC control method that contains a plurality of DC lines, solve the stability that the AGC control of the provincial power grid in the prior art depends entirely on the operation of the dispatching automation system, and at the same time Dispatchers have high operational requirements, which may easily lead to technical problems of AGC suspension or miscontrol

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