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产品参数 :
| 品牌 | DSPC172 |
| 起订 | ≥1 个 |
| 供货总量 | 322 个 |
| 电压 | 20 |
| 电流 | 20 |
| 体积 | 0.1 |
| 重量 | 0.8 |
| 颜色 | 1 |
产品详情 :
当温度越低至某设定值后，起动电加热器，温度升高至某设定值后时，停止加热器运行；同时电加热器也用于控制发电机的温度端差在合理的范围内。
（2）液压系统
机组的液压系统用于偏航系统刹车、机械刹车盘驱动。机组正常时，需维持额定压力区间运行。
液压泵控制液压系统压力，当压力下降至设定值后，启动油泵运行，当压力升高至某设定值后，停泵。
（3）气象系统
气象系统为智能气象测量仪器，通过RS485口和控制器进行通讯，将机舱外的气象参数采集至控制系统。
根据环境温度控制气象测量系统的加热器以防止结冰。
闪光障碍灯控制，每个叶片的末端安装闪光障碍灯，在夜晚点亮。
机舱风扇控制机舱内环境温度。
（4）电动变桨距系统
变桨距系统包括每个叶片上的电机、驱动器、以及主控制PLC等部件，该PLC通过CAN总线和机组的主控系统通讯，是风电控制系统中桨距调节控制单元，变桨距系统有后备DO顺桨控制接口。
（5）增速齿轮箱系统
齿轮箱系统用于将风轮转速增速至双馈发电机的正常转速运行范围内，需监视和控制齿轮油泵、齿轮油冷却器、加热器、润滑油泵等等。
当齿轮油压力低于设定值时，起动齿轮油泵；当压力高于设定值时，停止齿轮油泵。当压力越限后，发出警报，并执行停机程序。
齿轮油冷却器/加热器控制齿轮油温度：当温度低于设定值时，起动加热器，当温度高于设定值时停止加热器；当温度高于某设定值时，起动齿轮油冷却器，当温度降低到设定值时停止齿轮油冷却器。
润滑油泵控制，当润滑油压低于设定值时，起动润滑油泵，当油压高于某设定值时，停止润滑油泵。
（6）偏航系统控制
根据当前的机舱角度和测量的低频平均风向信号值，以及机组当前的运行状态、负荷信号，调节CW（顺时针）和CCW（逆时针）电机，实现自动对风、电缆解缆控制。
自动对风：当机组处于运行状态或待机状态时，根据机舱角度和测量风向的偏差值调节CW、CCW电机，实现自动对风。（以设定的偏航转速进行偏航，同时需要对偏航电机的运行状态进行检测）
自动解缆控制：当机组处于暂停状态时，如机舱向某个方向扭转大于720度时，启动自动解缆程序，或者机组在运行状态时，如果扭转大于1024度时，实现解缆程序。
of space for the later process system transformation.
Before the transformation, the average failure of S5 occurred twice a month, which affected the coal washing production for 4 hours, while the new system has been running for more than two years, without failure. The hourly treatment capacity of coal preparation plant is 1000 tons, and the profit of raw coal per ton is 25 yuan, which can reduce the loss by 1.2 million yuan. At the same time, the original S5 control system adopts 10 s5-150aplc devices, while the new system only uses two PLC systems. The control system is simple, easy to overhaul, and the inventory of spare parts is reduced. The spare parts investment is reduced by 1.2 million yuan per year, and the coal washing cost is reduced. After the transformation, the rate of the fine coal batch building increased from 93.46% to 99.85%, the recovery rate of the refined coal increased by 0.84%, and the annual benefit was more than 3 million yuan.
4、 The technical evaluation of centralized control system
1. operation mode
There are more than 100 selection switches and measuring control instruments on the original system operating platform. The new system adopts computer virtual switch and instrument instead of hardware development and measuring instrument of the original system. The operator can control the whole plant equipment only by mouse operation.
2. monitoring method
The original system uses hardware led to display the operation status of the equipment, with little information. The new system adopts two 100 inch back projection large screen to display the process flow and operation status of the equipment. It is intuitive and clear. All kinds of fault alarms of the equipment can locate faults, shorten the time of fault finding and processing, and all fault alarms are recorded. The main equipment is equipped with CCTV, and the real-time
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联 系 人 :叶送惠(女士)联系电话 :18059884796手机 :18059884796联系地址 :厦门市思明区吕岭路1733号创想中心2009-2010单元
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