合環(huán)操作論文：中山市配電網(wǎng)合環(huán)決策系統(tǒng)開發(fā)與應(yīng)用

1、合環(huán)操作論文：中山市配電網(wǎng)合環(huán)決策系統(tǒng)開發(fā)與應(yīng)用【中文摘要】我國當(dāng)前經(jīng)濟(jì)飛速發(fā)展,同時也給供電可靠性提出了更高的要求。國家建設(shè)部門和供電企業(yè)也開始重視編制和實(shí)施城市電網(wǎng)發(fā)展和改造規(guī)劃,并投入了大量資金和人力,城市電網(wǎng)建設(shè)取得了很大發(fā)展。但由于配電網(wǎng)絡(luò)及供電情況的復(fù)雜性,一般采用不同的供電方案以滿足供電要求,以力求達(dá)到技術(shù)經(jīng)濟(jì)的合理性。在配電網(wǎng)進(jìn)行檢修工作或者是事故情況下需要將用戶負(fù)荷進(jìn)行合環(huán)轉(zhuǎn)供電以提高供電可靠性,以減少用電客戶的損失。這將涉及到合環(huán)操作。由于合環(huán)操作時對系統(tǒng)將會產(chǎn)生穩(wěn)態(tài)電流及沖擊電流,如果電流過大有可能會影響到系統(tǒng)的安全。通過對配電網(wǎng)絡(luò)實(shí)施安全的配電網(wǎng)合環(huán)操作,適當(dāng)?shù)剡x擇供電

2、路徑,才能保證對用戶供電的可靠性和靈活性,提高配電網(wǎng)運(yùn)行的經(jīng)濟(jì)性,從而提高供電企業(yè)的經(jīng)濟(jì)效益和社會效益。合環(huán)操作是電力系統(tǒng)運(yùn)行操作中必不可少的環(huán)節(jié),也是實(shí)現(xiàn)配電系統(tǒng)自動化的基礎(chǔ)。配電網(wǎng)合環(huán)輔助決策系統(tǒng)可以快速、高效地分析合環(huán)潮流、短路電流及其引起的沖擊,并結(jié)合配電網(wǎng)絡(luò)電氣設(shè)備數(shù)據(jù)庫資料檢驗(yàn)設(shè)備可能出現(xiàn)的異常,為配電網(wǎng)合環(huán)操作提供可靠依據(jù)。從而大大提高了決策的科學(xué)性,在保證系統(tǒng)安全的前提下提高了工作效率。本文通過調(diào)查中山地區(qū)負(fù)荷結(jié)構(gòu)、電網(wǎng)運(yùn)行方式,簡化合環(huán)操作模型,提出采用計(jì)算合環(huán)潮流的整體方法,分析了合環(huán)后網(wǎng)絡(luò)短路電流計(jì)算的通用計(jì)算方法,在此基礎(chǔ)上進(jìn)行電氣設(shè)備校驗(yàn)。與中山電力系統(tǒng)現(xiàn)行使用的SC

3、ADA系統(tǒng)進(jìn)行實(shí)時通訊,設(shè)計(jì)出了合環(huán)決策系統(tǒng),并詳細(xì)介紹了該系統(tǒng)的功能及使用方法?！居⑽恼縒ith the rapid development of economy, a higher demand for the power supply reliability is required. Both national construction departments and power companies has paid more attention to the preparation and implementation of the plan for urban power sys

4、tem development and transformation, and a lot of money and human resources are invested into it. As a result, urban power grid construction has made great progress. Due to the complexities of the power distribution network and the power supply situation, different power supply schemes are used to me

5、et different requirements for power supply generally, in order to achieve the technical and economic rationality. Under maintenance or accident cases of the distribution network, loads are switched by the loop closing operation to improve power supply reliability and reduce the load losses. As the l

6、oop closing operation will generate steady-state current and impulse current, that if the current is too large may has a bad effect on power system security. To conduct a safe loop closing operation and choose an appropriate power supply path in the distribution network can help to ensure the reliab

7、ility and flexibility of power supply, and improve the economy of the distribution network, thereby enhancing the economic and social benefits of power supply enterprises.Loop closing operation is an essential part in the power system operation as well as the basis for achieving distribution system

8、automation. A decision-making support system for loop closing operation can analyze rapidly and efficiently the power flow, short-circuit current and the resulting impacts. Combined with the electrical equipment database of distribution network, the system can be used to test electrical equipments f

9、or possible faulty and to provide reliable information for the loop closing operation, which help to make the decisions more scientific and improve the efficiency under the security condition of power system.This paper proposes an overall approach for distribution network power flow calculation base

10、d on a simplified model after a survey of the load structure and the power system operation mode in zhongshan city. A general method for network short-circuit current calculation after the loop closing operation is researched. Electrical equipments are tested based on this method. Through real-time

11、communication with the exiting SCADA system, a decision-making support system for loop closing operation is designed and the functions and method for use of the system are described in detail in this paper.【關(guān)鍵詞】合環(huán)操作 短路電流 合環(huán)決策系統(tǒng) 【英文關(guān)鍵詞】Closed loop operation Short circuit current Closed loop system【目錄

12、】中山市配電網(wǎng)合環(huán)決策系統(tǒng)開發(fā)與應(yīng)用摘要5-6ABSTRACT6第一章 緒論9-191.1 問題的提出9-131.1.1 城市電網(wǎng)結(jié)構(gòu)9-111.1.2 城市配電網(wǎng)正常運(yùn)行方式111.1.3 不停電倒閘操作11-121.1.4 合環(huán)操作存在主要技術(shù)問題12-131.2 研究現(xiàn)狀13-181.2.1 問題的提出13-151.2.2 安全合環(huán)需要考慮的因素151.2.3 國內(nèi)外研究現(xiàn)狀15-171.2.4 存在的問題17-181.2.5 發(fā)展方向181.3 本文主要工作18-19第二章 中山市配電網(wǎng)合環(huán)輔助決策系統(tǒng)設(shè)計(jì)19-272.1 中山市電網(wǎng)運(yùn)行現(xiàn)狀分析19-212.1.1 自動化系統(tǒng)發(fā)展?fàn)顩r

13、19-202.1.2 供電可靠性202.1.3 負(fù)荷潮流分布狀況20-212.2 10KV 配電網(wǎng)21-232.2.1 中山市配電網(wǎng)設(shè)備狀況21-222.2.2 中山市配電環(huán)網(wǎng)建設(shè)22-232.2.3 配電網(wǎng)新技術(shù)推廣232.3 配電網(wǎng)合環(huán)輔助決策支持系統(tǒng)總體設(shè)計(jì)23-262.3.1 系統(tǒng)結(jié)構(gòu)23-242.3.2 系統(tǒng)功能構(gòu)成24-262.4 本章小結(jié)26-27第三章 中山市配電網(wǎng)合環(huán)輔助分析系統(tǒng)27-743.1 中山市配電網(wǎng)合環(huán)分類27-333.1.1 配電網(wǎng)合環(huán)潮流分析及基本合環(huán)操作27-283.1.2 合環(huán)分析的分類28-333.2 配電網(wǎng)合環(huán)分析數(shù)據(jù)庫33-393.2.1 數(shù)據(jù)庫內(nèi)容和數(shù)據(jù)結(jié)構(gòu)33-363.2.2 合環(huán)分析數(shù)據(jù)庫開發(fā)環(huán)境36-393.3 配電網(wǎng)合環(huán)輔助決策系統(tǒng)軟件39-733.3.1 軟件簡介39-403.3.2 軟件功能與特點(diǎn)40-413.3.3 控件及其使用41-503.3.4 數(shù)據(jù)錄入部分設(shè)計(jì)50-553.3.5 操作說明55-733.4 本章小結(jié)73-74第四章 合環(huán)