基于Web的低压断路器远程控制系统的研究
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摘要
将断路器纳入现有的网络资源下,采用基于网络的远程监控技术监测低压断路器的状态参数,远程监控系统通过网络进行断路器监测数据的传送,通过对采样数据的分析实现对运行设备的管理。采用基于Web的低压断路器远程控制技术,可以使现场控制层的用电设备与管理层和远程控制层进行信息交换,采用通用网络连接使得对各层的控制更加透明、信息共享性更好、系统更加开放、系统之间的各模块以及系统与系统之间的合作性更强,对系统的控制与维护不再是信息不共享、不交互的管理模式,并实现了远程控制和动态交互管理。
首先,将优先级引入故障调度算法对断路器故障进行处理。采用基于优先级故障树的上行法对断路器的故障类型进行分析识别,并依据故障的关键程度,对不同故障设置不同的优先级,给出相应的控制信息,实现对设备的保护功能。
其次,在主控单元与操作单元之间采用负荷协调技术,依据公平性原则协调主控单元与操作单元间的通信任务,使每个操作单元的数据都能得到及时准确的处理。根据每个服务器保存的负荷量和运行状态来选取操作单元的优先级,主控单元和备用主控单元之间可以根据数据处理状况调整数据处理顺序,合理分配网络资源,通过对数据链路层、网络层和传输层上吞吐率的测试,表明系统服务性能好。
最后,在对远程控制单元和操作单元间数据传输延时研究的基础上,采用基于优先差额轮询的分布式带宽占用比率的混合调度算法,依据时间同步控制网络上数据的传输,从而保障服务质量。将选择重发的检错机制应用于远程控制单元和操作单元间的数据传输中,采用请求应答方式,提高了数据传输的效率和可靠性。
通过使用低压断路器远程控制系统监测和控制电器设备的状态参数,并将数据通过网络实时上传到管理层和远程控制层,技术人员或系统可对电器设备出现的故障做出诊断,及时采取有效措施保证系统安全运行,防止发生严重的事故。对设备的实时监控避免了定期检修引起的生产停顿,指导设备的安全运行,提高了电器设备运行的效率、可靠性和安全度。
The circuit breakers will be placed on existing network resources , using multi-site remote monitoring technology based on network to monitor low-voltage electrical operating parameters. Through the network ,the monitoring data was send to remote monitoring host, after analysis the sampled data to realize the operation Equipment monitoring. Developed low-voltage circuit breaker remote control system based Web, the system implements communicate directly from the field devices to the management layer.The control and maintenance style of the equipment that was from the past closed management style gradually changed to open, sharing, cooperation, new Management style, ultimately, achieving to corporate control and management information seamless integration.
Firstly, the priority was introducted to the fault scheduling algorithm for processing the circuit breaker failure. The fault type of circuit breaker was analyzed and identificated by using fault tree upstream method based priority. Based on the fault criticality set different priorities to fault, and giving the corresponding control information, to achieve protection of the equipment.
Secondly, the load coordination technology was used between the main control unit and operating unit. Based on the fairness principle, the communication task was coordinated between the main control unit and operating unit, so that each operating unit can get timely and accuratly data processing. The operating unit priority can select by keeping load and running state of each server. The main unit and spare main unit can adjust the data processing sequence and reasonably allocate network resource according to the data processing state. Through the throughput test of data link layer, network layer and transport layer, the system service performance is good.
Finaly, the data transmission delay was researched between the remote control unit and operating unit. Based on the priority difference polling, the hybrid scheduling algorithm of distributed bandwidth ratio control data transmission by time synchronization. The services quality was supported. The detection and correction error mechanism of choose and retransmission was used to the data transmission between the remote control unit and operating unit, using the request response mode, to improve the efficiency and reliability of data transmission.
Through remotely control system of Low-voltage circuit breakers, professionals can remote real-time monitor the equipment operation status. The system can make judgments and projections to failure threatened, and to take effective measures to ensure the safe operation of power supply and distribution system, preventing the occurrence of fatal accidents. Using real-time monitoring of equipment can avoid production stoppages due to regular maintenance, guide the operation of the equipment necessaryly, improve the reliability of equipment operation, safety and effectiveness.
首先,将优先级引入故障调度算法对断路器故障进行处理。采用基于优先级故障树的上行法对断路器的故障类型进行分析识别,并依据故障的关键程度,对不同故障设置不同的优先级,给出相应的控制信息,实现对设备的保护功能。
其次,在主控单元与操作单元之间采用负荷协调技术,依据公平性原则协调主控单元与操作单元间的通信任务,使每个操作单元的数据都能得到及时准确的处理。根据每个服务器保存的负荷量和运行状态来选取操作单元的优先级,主控单元和备用主控单元之间可以根据数据处理状况调整数据处理顺序,合理分配网络资源,通过对数据链路层、网络层和传输层上吞吐率的测试,表明系统服务性能好。
最后,在对远程控制单元和操作单元间数据传输延时研究的基础上,采用基于优先差额轮询的分布式带宽占用比率的混合调度算法,依据时间同步控制网络上数据的传输,从而保障服务质量。将选择重发的检错机制应用于远程控制单元和操作单元间的数据传输中,采用请求应答方式,提高了数据传输的效率和可靠性。
通过使用低压断路器远程控制系统监测和控制电器设备的状态参数,并将数据通过网络实时上传到管理层和远程控制层,技术人员或系统可对电器设备出现的故障做出诊断,及时采取有效措施保证系统安全运行,防止发生严重的事故。对设备的实时监控避免了定期检修引起的生产停顿,指导设备的安全运行,提高了电器设备运行的效率、可靠性和安全度。
The circuit breakers will be placed on existing network resources , using multi-site remote monitoring technology based on network to monitor low-voltage electrical operating parameters. Through the network ,the monitoring data was send to remote monitoring host, after analysis the sampled data to realize the operation Equipment monitoring. Developed low-voltage circuit breaker remote control system based Web, the system implements communicate directly from the field devices to the management layer.The control and maintenance style of the equipment that was from the past closed management style gradually changed to open, sharing, cooperation, new Management style, ultimately, achieving to corporate control and management information seamless integration.
Firstly, the priority was introducted to the fault scheduling algorithm for processing the circuit breaker failure. The fault type of circuit breaker was analyzed and identificated by using fault tree upstream method based priority. Based on the fault criticality set different priorities to fault, and giving the corresponding control information, to achieve protection of the equipment.
Secondly, the load coordination technology was used between the main control unit and operating unit. Based on the fairness principle, the communication task was coordinated between the main control unit and operating unit, so that each operating unit can get timely and accuratly data processing. The operating unit priority can select by keeping load and running state of each server. The main unit and spare main unit can adjust the data processing sequence and reasonably allocate network resource according to the data processing state. Through the throughput test of data link layer, network layer and transport layer, the system service performance is good.
Finaly, the data transmission delay was researched between the remote control unit and operating unit. Based on the priority difference polling, the hybrid scheduling algorithm of distributed bandwidth ratio control data transmission by time synchronization. The services quality was supported. The detection and correction error mechanism of choose and retransmission was used to the data transmission between the remote control unit and operating unit, using the request response mode, to improve the efficiency and reliability of data transmission.
Through remotely control system of Low-voltage circuit breakers, professionals can remote real-time monitor the equipment operation status. The system can make judgments and projections to failure threatened, and to take effective measures to ensure the safe operation of power supply and distribution system, preventing the occurrence of fatal accidents. Using real-time monitoring of equipment can avoid production stoppages due to regular maintenance, guide the operation of the equipment necessaryly, improve the reliability of equipment operation, safety and effectiveness.
引文
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