Online hardware closed-loop network source coordination linear active-disturbance-rejection control method

Abstract

The invention relates to an online hardware closed-loop network source coordination linear active-disturbance-rejection control method, and the method comprises the steps: taking LABVIEW as a development environment, and building a coordination control algorithm library comprising the LADRC (linear active disturbance rejection control); taking an NI Compact RIO controller as a carrier, replacing a conventional PID control module through the LADRC based on the coordination control algorithm library, and building a network source coordination LADRC strategy which takes an energy balance signal as a feedforward signal. The method employs the LADRC to replace a conventional PID control module, can achieve a purpose of no static error through an ESO expanded observer of the LADRC through an integration element, avoids the side effect of integral feedback, does not depend on a specific mathematic model of a controlled system, is stronger in capability of resisting internal and external interferences, improves the adaptability and disturbance resistance of a network source coordination control strategy of an internal source side of an ultra-high voltage grid, enables the whole system to be good in robustness and adaptability in a network source coordination work section, is simple, and is more convenient for engineering application.

Description

technical field [0001] The invention belongs to the field of automatic power generation control of smart grids, and in particular relates to an online hardware closed-loop network source coordination linear active disturbance rejection control method. Background technique [0002] First, the traditional PID coordinated control scheme can no longer meet the rapid and frequent peak-shaving needs of the power grid. To control the assessment index requirements of the AGC system, it is necessary to adopt a new intelligent control strategy to replace the PID controller. It is required not to depend on the specific mathematical model of the controlled system and to have strong anti-disturbance ability against internal and external disturbances, and to improve the coordination of internal and external sources of the power grid. The adaptability and anti-disturbance of the control strategy make the whole system have good robustness and adaptability in the network source coordination ...

AI Technical Summary

Problems solved by technology

[0002] First, the traditional PID coordinated control scheme can no longer meet the rapid and frequent peak-shaving needs of the power grid. To control the assessment index requirements of the AGC system, it is necessary to adopt a new intelligent control strategy to replace the PID controller. It is required not to depend on the specific mathematical model of the controlled system and to have strong anti-disturbance ability against internal and external disturbances, and to improve the coordination of internal and external sources of the power grid. The adaptability and anti-disturbance of the control strategy make the whole system have good robustness and adaptability in the network source coordination working range;

[0003] Second, for the current network-related production tests on the network source coordination power supply side, especially the production tests related to the "two detailed rules" AGC coordination control assessment indicators, there are many DCS systems on site, and it is difficult to implement control strategy deployment in a unified manner; and the characteristics of on-site control objects Large changes require regular optimization of control strategies

There is a lack of an integrated online production test control effect verification and control strategy rapid deployment platform, which can realize the online hardware closed-loop verification of network-related production test and the prediction and evaluation of production test performance and effect under coordinated control of network sources. There is an urgent need for a standardized The network source coordinated control strategy test verification platform, based on online data, carries out closed-loop modeling verification and identification of on-site production test models, quickly verifies the prediction and evaluation of production test performance effects, and realizes functional requirements such as verification performance analysis of advanced control algorithms, etc. Finally realize the rapid batch deployment control scheme

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