【摘要】：風(fēng)力和太陽能光伏發(fā)電的輸出功率具有波動性和不確定性，其大規(guī)模并網(wǎng)會給電網(wǎng)安全穩(wěn)定運(yùn)行帶來重大挑戰(zhàn)。與此同時(shí)，常規(guī)調(diào)頻電源響應(yīng)慢、爬坡速率低，已不能完全滿足電力系統(tǒng)快速發(fā)展及新能源接入的需求。如何在新能源發(fā)電高滲透率條件下確保電力系統(tǒng)頻率穩(wěn)定已成為中國電網(wǎng)面臨的新挑戰(zhàn)之一。 近年來，各種電力儲能技術(shù)的快速發(fā)展為解決這些問題帶來了新的契機(jī)，其中的電池儲能技術(shù)，作為儲能家族中技術(shù)較為成熟的一員，具有快速精確的功率跟蹤能力，能為電力系統(tǒng)提供優(yōu)質(zhì)的調(diào)頻服務(wù)，比常規(guī)調(diào)頻電源更加高效，，為常規(guī)電網(wǎng)調(diào)頻所面臨的困境提供了一種新的輔助調(diào)頻手段。 本文首先介紹了電力系統(tǒng)一、二次調(diào)頻的機(jī)理和基本概念，根據(jù)實(shí)際電力系統(tǒng)的物理結(jié)構(gòu)和工作模式，系統(tǒng)地分析總結(jié)了電網(wǎng)調(diào)頻仿真模型中的區(qū)域等效方法，構(gòu)建了常規(guī)電力系統(tǒng)調(diào)頻的區(qū)域等效模型；在深入分析區(qū)域等效模型所涉及的各環(huán)節(jié)基本特點(diǎn)的基礎(chǔ)上，指出了現(xiàn)有模型存在的缺陷，進(jìn)而提出了一個(gè)可以反映機(jī)組出力約束、互聯(lián)系統(tǒng)聯(lián)絡(luò)線功率約束、一、二次調(diào)頻解耦控制以及通信時(shí)延等主要影響因素的兩區(qū)域4機(jī)組互聯(lián)電網(wǎng)的調(diào)頻仿真模型；在深入分析電池儲能電源工作原理、內(nèi)部結(jié)構(gòu)及其傳統(tǒng)調(diào)頻模型的基礎(chǔ)上，提取了電池儲能系統(tǒng)在調(diào)頻場景下的主導(dǎo)特性參數(shù)，從電池單體集成角度出發(fā)建立了一種改進(jìn)型電池儲能電源調(diào)頻模型。 然后，以湖南電網(wǎng)冬小運(yùn)行方式下的開機(jī)情況為基礎(chǔ)，建立了長株潭三區(qū)域互聯(lián)系統(tǒng)的等效模型并驗(yàn)證了模型對該區(qū)域頻率特性的描述能力，證明了基于該模型仿真研究的有效性。在此基礎(chǔ)上，深入分析了區(qū)域電網(wǎng)及常規(guī)電源的調(diào)頻特性，挖掘了傳統(tǒng)調(diào)頻技術(shù)的特點(diǎn)及所存在的固有缺陷，重點(diǎn)分析了儲能電源參與電力調(diào)頻的需求及潛在應(yīng)用工況。 針對含電池儲能電源的負(fù)荷頻率控制協(xié)調(diào)問題，在一次調(diào)頻場景下，完善了儲能固定頻率調(diào)節(jié)效應(yīng)系數(shù)的確定方法，提出了變頻率調(diào)節(jié)效應(yīng)系數(shù)的控制策略并驗(yàn)證了該控制策略的優(yōu)勢；在二次調(diào)頻場景下，構(gòu)建了基于預(yù)測控制理論(MPC)的含電池儲能電源的調(diào)頻協(xié)調(diào)控制體系，并結(jié)合長株潭三區(qū)域互聯(lián)系統(tǒng)空間狀態(tài)方程進(jìn)行仿真，驗(yàn)證了該協(xié)調(diào)控制體系在調(diào)頻場景下的適用性。在常規(guī)電網(wǎng)調(diào)頻評價(jià)指標(biāo)的基礎(chǔ)上，提出了電池儲能電源參與調(diào)頻的高效性評價(jià)指標(biāo)，通過在長株潭三區(qū)域互聯(lián)系統(tǒng)中模擬不同工況，對比分析了電池儲能電源與常規(guī)電源的調(diào)頻高效性。
[Abstract]:The output power of wind and solar photovoltaic power generation is volatile and uncertain, and its large-scale grid connection will bring great challenges to the safe and stable operation of power grid. At the same time, the response of the conventional FM power supply is slow and the climbing rate is low, which can not fully meet the needs of the rapid development of power system and the new energy access. How to ensure the frequency stability of power system under the condition of high permeability of new energy generation has become one of the new challenges faced by Chinese power grid. In recent years, the rapid development of various electric energy storage technologies has brought new opportunities to solve these problems. The battery energy storage technology, as a mature member of the energy storage family, has the ability of fast and accurate power tracking. It can provide high quality frequency modulation service for power system and is more efficient than conventional frequency modulation power supply. It provides a new auxiliary frequency modulation method for the predicament of conventional power system. This paper first introduces the principle and basic concept of power system primary and secondary frequency modulation. According to the physical structure and working mode of actual power system, it systematically analyzes and summarizes the regional equivalent method in the power network frequency modulation simulation model. The regional equivalent model of frequency modulation of conventional power system is constructed, and on the basis of deeply analyzing the basic characteristics of each link involved in the regional equivalent model, the defects of the existing model are pointed out, and a new model is put forward to reflect the constraint of generating unit output. The power constraints of tie-line of interconnected system, the main influencing factors such as secondary frequency modulation decoupling control and communication delay, the FM simulation model of interconnected power network of four units in two regions, the working principle of battery energy storage power supply is deeply analyzed. Based on the internal structure and its traditional FM model, the dominant characteristic parameters of the battery energy storage system in the FM scene are extracted, and an improved FM model of the battery energy storage power supply is established from the view of the battery monomer integration. Then, the equivalent model of Chang-Zhuzhou-Xiangtan three area interconnection system is established based on the start-up of Hunan power grid in winter, and the capability of describing the frequency characteristics of this region is verified by the model. The effectiveness of the simulation based on the model is proved. On this basis, the characteristics of frequency modulation of regional power network and conventional power supply are deeply analyzed, the characteristics and inherent defects of traditional frequency modulation technology are excavated, and the demand of energy storage power supply to participate in power frequency modulation and its potential application condition are emphatically analyzed. Aiming at the problem of coordination of load frequency control in battery storage power supply, the method of determining the coefficient of fixed frequency regulation effect of energy storage is improved in the primary frequency modulation scene. The control strategy of variable frequency regulation effect coefficient is put forward and the superiority of the control strategy is verified. In the secondary frequency modulation scene, a frequency modulation coordinated control system with battery energy storage power supply based on predictive control theory (MPC) is constructed. The simulation of the space state equation of the three regions interconnected system in Changsha-Zhuzhou-Xiangtan is carried out, and the applicability of the coordinated control system in the FM scene is verified. On the basis of the evaluation index of frequency modulation in conventional power grid, the evaluation index of efficiency of battery energy storage power supply participating in frequency modulation is put forward, and different working conditions are simulated in the three area interconnected system of Chang-Zhu-Tan. The FM efficiency of battery energy storage power supply and conventional power supply is compared and analyzed.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM91

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉夢欣;王杰;陳陳;;電力系統(tǒng)頻率控制理論與發(fā)展[J];電工技術(shù)學(xué)報(bào);2007年11期

2 張恒旭;李常剛;劉玉田;黃志龍;莊侃沁;;電力系統(tǒng)動態(tài)頻率分析與應(yīng)用研究綜述[J];電工技術(shù)學(xué)報(bào);2010年11期

3 林萬菁,劉嬈,李衛(wèi)東,武亞光,張銳,金鐘鶴;發(fā)電側(cè)電力市場下的AGC容量確定與機(jī)組選擇[J];電力系統(tǒng)自動化;2004年19期

4 黃宗君;李興源;晁劍;康鵬;;貴陽南部電網(wǎng)“7·7”事故的仿真反演和分析[J];電力系統(tǒng)自動化;2007年09期

5 李紅梅;嚴(yán)正;;用可再生能源充電的SMES裝置在系統(tǒng)調(diào)頻中的應(yīng)用[J];電力系統(tǒng)自動化;2009年15期

6 吳云亮;孫元章;徐箭;楊軍;;基于多變量廣義預(yù)測理論的互聯(lián)電力系統(tǒng)負(fù)荷頻率協(xié)調(diào)控制體系[J];電工技術(shù)學(xué)報(bào);2012年09期

7 王一振;馬世英;王青;馬世俊;;大型火電機(jī)組動態(tài)頻率響應(yīng)特性[J];電網(wǎng)技術(shù);2013年01期

8 陳大宇;張粒子;王澍;牟昤峰;;儲能在美國調(diào)頻市場中的發(fā)展及啟示[J];電力系統(tǒng)自動化;2013年01期

9 張恒旭;劉玉田;;電力系統(tǒng)動態(tài)頻率響應(yīng)時(shí)空分布特征量化描述[J];中國電機(jī)工程學(xué)報(bào);2009年07期

10 高林;戴義平;王江峰;趙攀;趙婷;;機(jī)組一次調(diào)頻參數(shù)指標(biāo)在線估計(jì)方法[J];中國電機(jī)工程學(xué)報(bào);2012年16期

本文編號：2250619