惠州蓄能电站厂用电系统控制策略与实施方案研究
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摘要
随着网络通信和软件技术的发展,厂用电自动控制系统成为电厂自动化领域近年来兴起的一个新的热点。与电厂监控系统侧重于电厂接入电网部分的电气监控相对比,厂用电控制系统更侧重于发电厂内部,实现厂用电中低压电气系统的保护、测量、计量、控制、分析等综合功能。
厂用电系统的可靠性将直接影响发电厂的安全运行,惠州蓄能电站由于厂用电系统设备较常规水电站繁复,且要求具备无人值班的条件,因此除了要求系统主接线方式灵活可靠、倒闸操作方便外,也要求系统的正常切换及局部事故(故障)情况下的控制操作能自动快速的完成。
惠蓄厂用电有18kV、10kV及400V三级电压,以单母线分段为主要接线方式。厂用电控制系统以可编程控制器为基础,将各自独立运行的18\10KV中压系统及400V低压系统中种类和数量众多的继电保护装置、测控装置、自动装置等通过现场总线或以太网联结起来构成系统。一方面,实现了与电站监控系统的的数字信息交换,大大减少了其测点投资和硬接线方式下的电缆投资;另一方面,通过网络和后台软件,实现了电气系统的协调控制、故障分析和运行管理,提高了整个发电厂的自动控制水平和运行管理水平。
本文根据厂用电控制系统的特点,结合惠州抽水蓄能电站工程实例对其实施方案及控制策略进行研究,主要做以下几个方面的工作:
1、介绍厂用电控制系统在我国的发展情况,厂用自动控制经历的历史过程。
2、以惠州抽水蓄能电站厂用电控制系统为例,介绍厂用电控制系统的结构设备配置与选型。
3、对惠州抽水蓄能电站控制策略进行分析,研究如何避免上级电源自动切换时导致下级备自投重复动作。
With the network communications and software technology, auxiliary power plant automation control system as the rise in recent years, a new hot spot. And power plant control system focused on the part of the electrical power grid access control contrast, auxiliary power control system to focus more on the internal power plant, power plant to achieve the protection of low voltage electrical systems, measurement, measurement, control, analysis integrated function.
Auxiliary power system reliability will directly affect the safe operation of power plants, Huizhou Pumped Storage Power Station Auxiliary Power System equipment as compared with conventional power station complex, and require the conditions with no one on duty, so in addition to the main wiring demands flexible and reliable system, easy switching operation, but also require the system to normal switching and local accident (fault) operating under the control automatically completed quickly.
Huizhou Pumped Storage Power Station with 18kV, 10kV and 400V three-level voltage to a single bus section to the main terminals. Auxiliary power control system based on programmable controllers, would operate independently of the 18 \ 10KV medium voltage system and 400V low voltage systems and numerous types of protection devices, monitoring equipment, automatic devices, or via field bus Ethernet link together to form systems. On the one hand, to achieve with the power monitoring system for digital information exchange, thus greatly reducing the measuring point mode of investment and hard-wired cable investment; the other hand, through the network and back office software to realize the coordinated control of electrical systems, fault analysis and operation management, improve the level of the power plant automation and operations management.
This power plant control system according to the characteristics, combined with examples of Huizhou Pumped Storage Power Station Project and control strategy implementation plan for its research, mainly to do some work:
1、Introduce the auxiliary power control system in the development of our country, works with the historical process control experience.
2、Pumped Storage Power Station in Huizhou power plant control system as an example, power plant control system configuration and selection of structures and equipment.
3、Huizhou pumped storage power station on the analysis of control strategies on how to avoid the higher power supply automatic switching equipment from leading to lower investment and repetitive movements.
厂用电系统的可靠性将直接影响发电厂的安全运行,惠州蓄能电站由于厂用电系统设备较常规水电站繁复,且要求具备无人值班的条件,因此除了要求系统主接线方式灵活可靠、倒闸操作方便外,也要求系统的正常切换及局部事故(故障)情况下的控制操作能自动快速的完成。
惠蓄厂用电有18kV、10kV及400V三级电压,以单母线分段为主要接线方式。厂用电控制系统以可编程控制器为基础,将各自独立运行的18\10KV中压系统及400V低压系统中种类和数量众多的继电保护装置、测控装置、自动装置等通过现场总线或以太网联结起来构成系统。一方面,实现了与电站监控系统的的数字信息交换,大大减少了其测点投资和硬接线方式下的电缆投资;另一方面,通过网络和后台软件,实现了电气系统的协调控制、故障分析和运行管理,提高了整个发电厂的自动控制水平和运行管理水平。
本文根据厂用电控制系统的特点,结合惠州抽水蓄能电站工程实例对其实施方案及控制策略进行研究,主要做以下几个方面的工作:
1、介绍厂用电控制系统在我国的发展情况,厂用自动控制经历的历史过程。
2、以惠州抽水蓄能电站厂用电控制系统为例,介绍厂用电控制系统的结构设备配置与选型。
3、对惠州抽水蓄能电站控制策略进行分析,研究如何避免上级电源自动切换时导致下级备自投重复动作。
With the network communications and software technology, auxiliary power plant automation control system as the rise in recent years, a new hot spot. And power plant control system focused on the part of the electrical power grid access control contrast, auxiliary power control system to focus more on the internal power plant, power plant to achieve the protection of low voltage electrical systems, measurement, measurement, control, analysis integrated function.
Auxiliary power system reliability will directly affect the safe operation of power plants, Huizhou Pumped Storage Power Station Auxiliary Power System equipment as compared with conventional power station complex, and require the conditions with no one on duty, so in addition to the main wiring demands flexible and reliable system, easy switching operation, but also require the system to normal switching and local accident (fault) operating under the control automatically completed quickly.
Huizhou Pumped Storage Power Station with 18kV, 10kV and 400V three-level voltage to a single bus section to the main terminals. Auxiliary power control system based on programmable controllers, would operate independently of the 18 \ 10KV medium voltage system and 400V low voltage systems and numerous types of protection devices, monitoring equipment, automatic devices, or via field bus Ethernet link together to form systems. On the one hand, to achieve with the power monitoring system for digital information exchange, thus greatly reducing the measuring point mode of investment and hard-wired cable investment; the other hand, through the network and back office software to realize the coordinated control of electrical systems, fault analysis and operation management, improve the level of the power plant automation and operations management.
This power plant control system according to the characteristics, combined with examples of Huizhou Pumped Storage Power Station Project and control strategy implementation plan for its research, mainly to do some work:
1、Introduce the auxiliary power control system in the development of our country, works with the historical process control experience.
2、Pumped Storage Power Station in Huizhou power plant control system as an example, power plant control system configuration and selection of structures and equipment.
3、Huizhou pumped storage power station on the analysis of control strategies on how to avoid the higher power supply automatic switching equipment from leading to lower investment and repetitive movements.
引文
[1]电力工程电气设计手册电气一次部分、电气二次部分.中国电力
[2]岑贞安.抽水蓄能电站厂用电负荷自动卸载.广西电力,2004,(3):27-30
[3]程泽斌.水布娅电10kV厂用电系统备自投方式.湖北水利发电,2008,(6):60-63
[4]杨育红.浅谈现场总线在电厂中的应用.山东电力技术,2008,(2):12-15
[5]张培杰.关于厂用电快切装置切换判据的探讨.电力自动化设备,2005,25(6):91-93
[6]许德荣.飞来峡水利枢纽10kV厂用电PLC备自投试验.水电站机电技术,2003.1
[7]洪佩松.电厂厂用电快切装置投切条件分析.电力自动化设备,2007,27(5):36-39
[8]戈京.大型核电厂用电快切的数模仿真.华东电力,2008,36(6)
[9]吕季平.厂用电自动切换解决方案.配电技术,2003,7
[10]方晓敏..现场总线在电厂中的应用前景,安装,2007,5(5):42-43
[11]马杰.现场总线控制系统在电厂辅控系统联网中的应用.电力设备,2005,6(4):43-45
[12]水电厂设备安装、运行、维护、检修与标准规范全书
[13]刘向杰,现场总线控制系统得现状与展.电网技术.1999,23(3):47~50
[14]易杨,现场总线在电厂控制系统中的应用.广东电力.2006,19(8):41~44
[15]周二保,水电站PLC厂用电自动切换控制系统设计与应用.水电自动化与大坝监测,2003,27(5):22~24
[16]刘丽芳.水电站10kV母线备自投设计.电力自动化设备.2008,28(2):116~118
[17]席珍,刘曙光.数字备用电源自动投切装置设计与失向.电力自动化设备, 2006,26(4):77~79
[18]党杰,刘涤尘,叶念国.发电厂厂用电源切换技术研究.电力自动化设备, 2005,25(6):89~91
[19]王莉等.低压侧分支型变压器备自投逻辑实施方案.电力系统保护与控制.2006,36(23):121~124
[20]黄福进. PLC在电厂厂用备自投系统中的应用.电力自动化设备. 2003,23(11):91~92
[21]成盛. DCS_PLC与现场总线系统在电厂的应用发展.山西焦煤科技,2008,(7):72~76
[22]李静,林祺蔚. 110KV内桥接线变电站进线备投逻辑分析.山东电力高等专科学校学报,2005,8(4):40~42
[23]刘佐华. 110kV变电站备自投动作不成功原因分析及补救措施.电力系统保护与控制,2009,37(2):91~92
[24]吴迪帆. 10kV分段备自投装置逻辑和整定分析.实用技术育管理,61~66
[25]方辉钦主编,现代水电厂计算机监控技术与试验中国电力出版社2004年第一版
[2]岑贞安.抽水蓄能电站厂用电负荷自动卸载.广西电力,2004,(3):27-30
[3]程泽斌.水布娅电10kV厂用电系统备自投方式.湖北水利发电,2008,(6):60-63
[4]杨育红.浅谈现场总线在电厂中的应用.山东电力技术,2008,(2):12-15
[5]张培杰.关于厂用电快切装置切换判据的探讨.电力自动化设备,2005,25(6):91-93
[6]许德荣.飞来峡水利枢纽10kV厂用电PLC备自投试验.水电站机电技术,2003.1
[7]洪佩松.电厂厂用电快切装置投切条件分析.电力自动化设备,2007,27(5):36-39
[8]戈京.大型核电厂用电快切的数模仿真.华东电力,2008,36(6)
[9]吕季平.厂用电自动切换解决方案.配电技术,2003,7
[10]方晓敏..现场总线在电厂中的应用前景,安装,2007,5(5):42-43
[11]马杰.现场总线控制系统在电厂辅控系统联网中的应用.电力设备,2005,6(4):43-45
[12]水电厂设备安装、运行、维护、检修与标准规范全书
[13]刘向杰,现场总线控制系统得现状与展.电网技术.1999,23(3):47~50
[14]易杨,现场总线在电厂控制系统中的应用.广东电力.2006,19(8):41~44
[15]周二保,水电站PLC厂用电自动切换控制系统设计与应用.水电自动化与大坝监测,2003,27(5):22~24
[16]刘丽芳.水电站10kV母线备自投设计.电力自动化设备.2008,28(2):116~118
[17]席珍,刘曙光.数字备用电源自动投切装置设计与失向.电力自动化设备, 2006,26(4):77~79
[18]党杰,刘涤尘,叶念国.发电厂厂用电源切换技术研究.电力自动化设备, 2005,25(6):89~91
[19]王莉等.低压侧分支型变压器备自投逻辑实施方案.电力系统保护与控制.2006,36(23):121~124
[20]黄福进. PLC在电厂厂用备自投系统中的应用.电力自动化设备. 2003,23(11):91~92
[21]成盛. DCS_PLC与现场总线系统在电厂的应用发展.山西焦煤科技,2008,(7):72~76
[22]李静,林祺蔚. 110KV内桥接线变电站进线备投逻辑分析.山东电力高等专科学校学报,2005,8(4):40~42
[23]刘佐华. 110kV变电站备自投动作不成功原因分析及补救措施.电力系统保护与控制,2009,37(2):91~92
[24]吴迪帆. 10kV分段备自投装置逻辑和整定分析.实用技术育管理,61~66
[25]方辉钦主编,现代水电厂计算机监控技术与试验中国电力出版社2004年第一版
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