店铺信息
产品参数 :
品牌 | DSQC107 |
起订 | ≥1 个 |
供货总量 | 356 个 |
电压 | 20 |
电流 | 20 |
体积 | 0.1 |
重量 | 0.8 |
颜色 | 1 |
产品详情 :
④ 系统能够及时显示各机组运行过程中发生的故障。
⑤系统能够对风电机组实现集中控制。值班员在集中控制室内,只需对标明某种功能的相应键进行操作,就能对下位机进行改变设置状态和对其实施控制。
⑥系统管理。监控软件具有运行数据的定时打印和人工即时打印以及故障自动记录的功能,以便随时查看风电场运行状况的历史记录情况。
四、WPCS风电控制系统功能
WPCS风电控制系统具有以下基本功能:
1、数据采集(DAS)功能
机组运行过程中进行监测的相关参数包括:
(1)电网参数,包括电网三相电压、三相电流、电网频率、功率因数等。电压故障检测:电网电压闪变、过电压、低电压、电压跌落、相序故障、三相不对称等。
(2)气象参数,包括风速、风向、环境温度等。
(3)机组状态参数检测,包括:风轮转速、发电机转速、发电机线圈温度、发电机前后轴承温度、齿轮箱油温度、齿轮箱前后轴承温度、液压系统油温、油压、油位、机舱振动、电缆扭转、机舱温度等。
2、机组启停、发电控制
(1)主控系统检测电网参数、气象参数、机组运行参数,当条件满足时,启动偏航系统执行自动解缆、对风控制,释放机组的刹车盘,调节桨距角度,风车开始自由转动,进入待机状态。
(2)当外部气象系统监测的风速大于某一定值时,主控系统启动变流器系统开始进行转子励磁,待发电机定子输出电能与电网同频、同相、同幅时,合闸出口断路器实现并网发电。
(3)风力机组功率、转速调节
根据风力机特性,当机组处于佳叶尖速比λ运行时,风机机组将捕获得大的能量,虽理论上机组转速可在任意转速下运行,但受实际机组转速限制、系统功率限制,不得不将该阶段分为以下几个运行区域:即变速运行区域、恒速运行区域和恒功率运行区。额定功率内的运行状态包括:变速运行区(佳的λ)和恒速运行区。
当风机并网后,转速小于极限转速、功率低于额定功率时,根据当前实际风速,调节风轮的转速,使机组工作在捕获大风能的状态。
3、风电控制系统辅助设备逻辑
(1)发电机系统
监控发电机运行参数,通过3台冷却风扇和4台电加热器,控制发电机线圈温度、轴承温度、滑环室温度在适当的范围内,相关逻辑如下:
当发电机温度升高至某设定值后,起动冷却风扇,当温度降低到某设定值时,停止风扇运行;当发电机温度过高或过低并超限后,发出报警信号,并执行停机程序。final coal, total refined coal and coal ash washing are added to realize the purpose of reasonable washing and product quality.
4. TV monitoring and control system
The upper computer is used to replace the original operating station to realize the monitoring and control of process parameters and production process. The large screen TV wall is used instead of the original 8500 * 1400 modular analog panel. The main equipment is monitored in real time by closed-circuit television. The main production posts are equipped with LD (1800 * 800) matrix code display screen to display the production situation, process parameters and coal washing indexes to guide coal washing production.
5. production management computer network system
New production management network system includes: production management, coal quality technology management, equipment management, cost management, material management, technical data and file management, safety technology training management, etc.
3、 Analysis of the effect of technical transformation of centralized control system
The reliability of PLC hardware system is significantly improved. The original S5 control system is single power supply and single CPU. once there is a failure, the whole control system will be paralyzed. The new system adopts the dual CPU and dual power hot standby mode. When one of them has problems and the other half-automatic operation, the accident rate is greatly reduced and the reliability of the system is improved.
The capacity expansion of PLC hardware system is greatly improved, the storage capacity of equipment is large, and the external input and output points are many, which is conducive to the expansion of controlled equipment, and there is plenty
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