Microcomputer excitation regulator capable of automatically setting control parameter

Abstract

The invention discloses a microcomputer excitation regulator capable of automatically setting a control parameter and a method for automatically setting the control parameter. The microcomputer excitation regulator is characterized in that a needed proportion integration differentiation (PID) control parameter can be computed and automatically imbedded into a parameter storage of a main control unit (MCU) through a built-in mathematical model and recording data of a phase step test. The microcomputer excitation regulator comprises a dual redundancy MCU which takes digital signal processor 2812 (DSP) as the core and an auxiliary control unit which adopts an integrated industrial personal computer (IPC). The dual redundancy MCU has the functions of measurement, PID control, recording, and control pulse output required by power; the serial communication manner is adopted to have data exchange between the auxiliary control unit and the dual redundancy MCU; the auxiliary control unit can analyze and compute measured data, compute the PID control parameter according to the corresponding built-in mathematical model and a needed control index, and distribute the PID control parameter to the dual redundancy MCU; in addition, the auxiliary control unit can revise parameters in the mathematical model to enable the parameters to fit the actual parameters according to the recording data; and moreover, the auxiliary control unit has the function of computer simulation, and by comparing the simulation result with the recording result, the auxiliary control unit provides scientific basis for selecting the control parameter.

Description

Technical field [0001] The invention relates to the field of synchronous generator control, and mainly relates to a microcomputer excitation regulator which uses classical control theory to automatically calculate control parameters, and belongs to the field of electric power automation. Background technique [0002] China's electric power industry standard "DL / T583-2006 Large and medium-sized hydraulic generator static rectification excitation system and device technical conditions", "Large steam turbine generator excitation system technical conditions" and the national standard "GB / T7409.3-2007 synchronous motor Excitation System "Technical Requirements for Excitation System of Large and Medium-sized Synchronous Generators" and other relevant regulations have put forward clear requirements for the control performance of the excitation system of synchronous generators, and other relevant standards have also given corresponding control performance for the excitation control s...

AI Technical Summary

Problems solved by technology

This requires on-site technicians to master comprehensive control theory knowledge and have rich practical experience, so that they can quickly find out the parameters that meet the requirements within a limited time. Limitations often result in the setting of control parameters not fully meeting the requirements, making the generator put into actual operation with defects

In this way, under normal working conditions, the generator operates normally, but under some abnormal working conditions, the deficiencies in some aspects of control performance will be fully exposed, and at this time the power grid fails and the excitation system needs to respond quickly and correctly Sometimes, a little lack of control performance will also lead to the collapse of the power grid, thus affecting the safe operation of the power grid

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