發(fā)布時間：2018-06-12 13:47

  本文選題：大規(guī)模儲能 + 電池管理系統(tǒng)��； 參考：《廣西大學》2014年碩士論文

【摘要】：電池儲能系統(tǒng)在智能電網(wǎng)從發(fā)電到用電的各個環(huán)節(jié)得到廣泛應用,其作用主要包括削峰填谷、作為緩沖裝置,提高新能源并網(wǎng)能力。電池儲能系統(tǒng)由電池、電池管理系統(tǒng)BMS、雙向能量轉(zhuǎn)換系統(tǒng)PCS、及監(jiān)控系統(tǒng)等關鍵設備組成。電池管理系統(tǒng)是電池儲能系統(tǒng)重要組成部分,因此,研究電池管理系統(tǒng),對于延長電池使用壽命、降低運行成本等方面,具有重要意義。 目前電池管理系統(tǒng)研發(fā)有不少廠商,但不同廠商的電池管理系統(tǒng),在通信接口及通信協(xié)議方面存在較大差異,缺少統(tǒng)一化接口,導致電池管理系統(tǒng)可替換性和可維護性較差,同時也阻礙了電池管理系統(tǒng)的發(fā)展。針對規(guī)模儲能特點,設計出電池管理系統(tǒng)。并將CANopen協(xié)議應用到電池管理系統(tǒng)上,實現(xiàn)電池管理系統(tǒng)通信接口標準化和統(tǒng)一化,任何支持CANopen協(xié)議的設備,都可以連接到電池管理系統(tǒng)CAN總線上,實現(xiàn)對電池管理系統(tǒng)的數(shù)據(jù)訪問。解決了由于電池管理系統(tǒng)接口不統(tǒng)一,造成的電池管理設備可替換性差、難以與其他控制或管理設備直接對接、以及由此引發(fā)的國內(nèi)電池管理系統(tǒng)發(fā)展緩慢的問題。 以磷酸鐵鋰電池為例,研究了電池特性,測量并獲取電池電壓與SoC關系,電池內(nèi)阻與SoC關系,在此基礎上使用卡爾曼濾波算法估算電池SoC,并將此算法在電池管理系統(tǒng)中實現(xiàn)。電池管理單元主控芯片采用STM32F103C8T6,電壓檢測芯片采用LTC6803-3,電池簇管理系統(tǒng)采用基于PC/104總線工業(yè)控制計算機,電池管理單元與電池簇管理系統(tǒng),共同組成電池管理系統(tǒng)。電池管理單元與電池簇管理系統(tǒng)之間采用CANopen協(xié)議通信,任何支持CANopen協(xié)議的設備,都可以連接到CAN總線上,讀取電池管理系統(tǒng)參數(shù)。 本文設計的電池管理系統(tǒng),采用卡爾曼濾波算法估計電池SoC,實現(xiàn)電池各種數(shù)據(jù)采樣、監(jiān)測、顯示、報警等多種功能,并將CANopen協(xié)議應用在電池管理系統(tǒng)上,方便電池管理單元與電池簇管理系統(tǒng)連接,解決了國內(nèi)電池管理系統(tǒng)通信接口不統(tǒng)一,以及由此引發(fā)的一些問題,通過在“50kW儲能接入系統(tǒng)”上實際測試,在CANopen通信一致性、電池電壓和溫度測量、SoC估算方面取得了很好效果。
[Abstract]:Battery energy storage system has been widely used in various aspects of smart grid from generation to power. Its function mainly includes cutting peak and filling valley, acting as buffer device, and improving the ability of new energy grid connection. Battery energy storage system consists of battery, battery management system (BMS), bidirectional energy conversion system (PCS), and monitoring system. Battery management system is an important part of battery energy storage system. Therefore, it is of great significance to study battery management system for prolonging battery life and reducing operation cost. At present, there are many manufacturers in battery management system research and development, but the battery management system of different manufacturers has great differences in communication interface and communication protocol, and the lack of unified interface leads to the poor replaceable and maintainability of battery management system. At the same time, it also hinders the development of battery management system. According to the characteristics of scale energy storage, the battery management system is designed. The CANopen protocol is applied to the battery management system to realize the standardization and unification of the communication interface of the battery management system. Any equipment supporting the CANopen protocol can be connected to the can bus of the battery management system. Realize the data access to the battery management system. It solves the problem that the battery management equipment is difficult to connect directly with other control or management equipment due to the lack of uniform interface of battery management system and the slow development of domestic battery management system. Taking the lithium iron phosphate battery as an example, the characteristics of the battery are studied, and the relationship between the battery voltage and SoC, the relationship between the battery internal resistance and the SoC is obtained. On this basis, the Kalman filter algorithm is used to estimate the SoC of the battery, and the algorithm is implemented in the battery management system. The battery management unit adopts STM32F103C8T6, the voltage detection chip uses LTC6803-3, the battery cluster management system adopts the industrial control computer based on PC-104 bus, the battery management unit and the battery cluster management system constitute the battery management system. The CANopen protocol is used between the battery management unit and the battery cluster management system. Any device supporting the CANopen protocol can be connected to the can bus to read the parameters of the battery management system. The battery management system designed in this paper uses Kalman filter algorithm to estimate the battery SoC, realizes various functions of battery data sampling, monitoring, display, alarm and so on, and applies CANopen protocol to the battery management system. It is convenient for the battery management unit to connect with the battery cluster management system. The communication interface of the domestic battery management system is not unified, and some problems arising therefrom are solved. Through the actual test on "50kW energy storage access system", the communication consistency in CANopen is obtained. Good results have been achieved in the estimation of cell voltage and temperature.
【學位授予單位】：廣西大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM912

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本文編號：2009875