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電力系統(tǒng)安全穩(wěn)定控制(一）
摘 要電力系統(tǒng)安全穩(wěn)定控制是保障系統(tǒng)可靠運行的重要手段，一直受到廣泛重視�，F(xiàn)代電力系統(tǒng)規(guī)模迅速發(fā)展的同時也帶來了更多更復雜的安全隱患和穩(wěn)定問題。研究和應用計算機、通信、電子以及現(xiàn)代控制理論等最新技術和方法，開發(fā)和生產(chǎn)各種穩(wěn)定控制系統(tǒng)及安全自動裝置，是電力系統(tǒng)安全運行的迫切要求。
本文立足于系統(tǒng)的穩(wěn)定控制問題，結合新一代智能型低頻低壓減載裝置的科研項目，研究了相關領域并提出了新的思想，為更深入的研究奠定了基礎。
本文首先綜述了電力系統(tǒng)安全穩(wěn)定控制的研究現(xiàn)狀，從控制理論及控制措施(裝置)兩方面概述了國內(nèi)外的主要研究成果。最后簡要介紹了安全穩(wěn)定控制技術的發(fā)展趨勢。
電力系統(tǒng)暫態(tài)能量函數(shù)直接法經(jīng)過多年的研究，近來已取得重大進展，成為時域分析的重要輔助方法。本文第二章對暫態(tài)能量函數(shù)的基本理論和方法作了介紹，重點探討了EEAC法及其在穩(wěn)定切機控制中的應用。進一步的實用化還需要大量的工作。
多機系統(tǒng)頻率動態(tài)過程是低頻減載方案設計的重要依據(jù)，本文在原有線性化擾動模型基礎之上，增加了發(fā)電機和負荷頻率調(diào)節(jié)效應的影響，并進行了系統(tǒng)仿真研究。同時根據(jù)多機模型特點及仿真結果提出了一種基于多機系統(tǒng)的低頻減載設計和整定新方案，與傳統(tǒng)方案相比，該方案提高了低頻減載性能及系統(tǒng)運行方式的適應性。
作為方案的一種實現(xiàn)，本文作者作為主要研制者之一研制開發(fā)了新一代微機智能型低頻低壓減載裝置。第四章詳細介紹了裝置改進的軟件測頻算法，按功率定值減載的實現(xiàn)方法，軟、硬件結構等關鍵技術措施。最后給出了裝置的動模實驗結果。
關鍵詞： 安全穩(wěn)定控制 低頻低壓減載 暫態(tài)能量函數(shù) 切機控制
EEAC 頻率動態(tài)過程 頻率仿真 按功率減載 測頻算法
Abstract
Power system stability control, on which extensive attention has been paid, is an
important measure to safeguard a reliable power system. With the quick development
of power system, lots of more complicated security and stability problems are emerged.
The safe running of power system requires eagerly the research and use of the latest
technology of computer, communication , electronics and modern control theory to develop
and manufacture stability control system and automatically safety control equipment.
In this paper, stability control of power system is focused. New ideas which
are the basis of deeper research are developed on the basis of extensive resource on
related field in the process of researching a new intelligent style under frequency and
under voltage load shedding equipment.
The latest research of power system stability control is reviewed firstly in this paper.
Then, the main achievements at control theory and control equipment are introduced. At
the end, the tendency of safety and stability&
nbsp;control technology is introduced.
After years of research, direct method using transient energy function of power system
has gotten important development, and has become the main method of time-fiend analysis. In chapter 2, basic theories of TEF method are introduced, and the EEAC
method and its application in stability generator tripping control are discussed carefully.
A lot of work still need to be done in order to make practical achievement.
The frequency transient process of multi-generator system is the important basis of under frequency load shedding scheme design.
In this paper, the effects of frequency regulation of generator and load are included on
the basis of linear disturbance model, and system digital simulation research is included
too. According to the characteristics of multi-generator model and results of system digital simulation research, a new design and set
scheme of under?frequency load shedding equipment on the basis of multi-generator system is developed in this paper. Compared&n bsp;with conventional scheme,
this scheme advanced the characteristics of under frequency load shedding equipment
and its adaptively to power system running style.
As a way to actualize this scheme, a new intelligent style under frequency and
Under voltage load shedding equipment on the basis of microcomputer is developed in
this paper. In chapter 4, the improved algorithm of frequency measurement, the method
of load shedding according to power, and the key technology of software and hardware
structure are introduced in detail. At the end, the physical simulation results of this
equipment are
listed.
KEY WORDS:
power system stability control under-frequency and under-voltage load shedding
transient energy function extended equal area criterion
generator tripping frequency dynamical process
load shedding according to power frequency simulation Algorithm
目 錄
摘要
ABSTRACT
第一章 緒論 (1)
§1-1 引言 (1)
§1-2 安全穩(wěn)定控制研究現(xiàn)狀 (2)
§1-3 論文的主要工作和章節(jié)安排 (7)
第二章 暫態(tài)能量函數(shù)與切機穩(wěn)定控制 (8)
§2-1 多機系統(tǒng)的經(jīng)典模型和暫態(tài)能量函數(shù) (8)
§2-2 直接法的假設和擴展等面積定則 (9)
§2-3 切機模型及其實用判據(jù) (12)
第三章 多機系統(tǒng)頻率動態(tài)特性及低頻減載的整定 (15)
§3-1 傳統(tǒng)的單機模型及整定 (15)
§3-2 多機系統(tǒng)頻率動態(tài)過程的數(shù)學模型 (16)
§3-3 多機系統(tǒng)頻率動態(tài)過程的仿真計算 (20)
§3-4 低頻減載設計方案新探討 (24)
第四章 智能式微機低頻低壓減載裝置的
研究 (26)
§4-1 大電網(wǎng)頻率電壓緊急控制的新特點及新要求 (26)
§4-2 基于富氏濾波測頻算法的改進研究 (27)
§4-3 智能式低頻低壓減載裝置的設計原理 (31)
§4-4 裝置動模試驗報告 (39)
第五章 全文總結 (43)
參考文獻 (44)
作者在攻讀碩士學位期間發(fā)表的論文 (46)
致謝 (47)
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