YWT微机液压调速器采用高性能可编程控制器作为硬件主体，与合适的机械液压随动系统相配合，实现水轮发电机组的转速调节与出力控制。

可编程逻辑控制器是一种以微处理器为基础，综合了现代计算机技术自动控制技术和通信技术发展起来的一种通用的工业自动控制装置体积小、功能强、可靠性高、程序设计简单、维护方便等优点，特别适应恶劣工业环境。

主要技术指标

1、机组电网频率信号：信号电压正常工作范围：0.5-130V；正常测频范围：5-100HZ；测频精度：≤±0.002HZ

2、导叶位置反t贵信号：操作器提供电压：+24V；导叶位置反1l贵电压：导叶开度0-100%对应0.5-10V。

3、开关量输入信号：断路器位置状态开机信号接点、停机信号接点、导叶开度增加接点、导叶开度減少接点。

主要特点

1、采用可编程控制器作为硬件主体，可靠性高，平均无故障时间MTBF≥25000小时。

2、具有频率(转速)、开度调节模式，适应水电厂不同运行工况的要求。

3、频率(转速)的测量由PLC实现，外围电路简単，提高了整机的抗干扰能力及可靠性。

4、频率调节模式采用PID调节规律，开度采用PID调节规律。

YWT microcomputer hydraulic speed governor

YWT microcomputer hydraulic speed governor adopts high-performance programmable controller as the main body of the hardware ａnd cooperates with appropriate mechanical hydraulic follow-up system to realize speed regulation ａnd output control of hydro-generator.

Programmable logic controller is a microprocessor-based, integrated modern computer technology automatic control technology ａnd communication technology developed a common industrial automatic control device Small size, strong function, high reliability, simple program design , Easy maintenance, etc., especially to adapt to harsh industrial environments.

Main Specifications

1, the unit grid frequency signal: the signal voltage normal working range: 0.5-130V; normal frequency measurement range: 5-100HZ; frequency measurement accuracy: ≤ ± 0.002HZ

2, guide vane position anti-t expensive signal: the operator to provide voltage: +24 V; guide vane position anti-1l expensive voltage: guide vane opening 0-100% corresponds to 0.5-10V.

3, the switch input signal: circuit breaker position state start signal contact, stop signal contacts, guide vane opening increased contacts, vane opening to reduce the contact.

main feature

1, the use of programmable logic controller as the main hardware, high reliability, MTBF ≥ 25000 hours MTBF.

2, with frequency (speed), opening adjustment mode, to adapt to different operating conditions of hydropower plant requirements.

3, the frequency (speed) measurement by the PLC to achieve, the external circuit simple, improve the machine＇s anti-interference ability ａnd reliability.

4, the frequency adjustment mode using PID regulation law, opening the use of PID regulation.