MGC-6000 Governor System

MGC-6000
Governor System

An advanced digital governor system for pumped-storage and reversible hydropower units, featuring dual-controller hot standby redundancy, high reliability, and precise turbine regulation under dynamic load conditions.

MGC6000 hydraulic turbine governor electrical control cabinet front view for hydropower applications

Product Overview
Dimensions
Control Diagram
Technical Parameter
Performance Parameter
Model Code

Overview

The MGC-6000 Series Governor is designed for the full range of pumped-storage reversible units, providing fast and reliable control for generation, pumping, phase modulation, standby, and transition operating modes. With a fully cross-redundant dual-controller architecture, TCP/IP communication, and independent power supplies, the system ensures high reliability, stability, and operational safety under complex pumped-storage conditions.

The system supports single or double regulation for medium, large, and extra-large governor applications. Key configurations include dual electro-hydraulic redundant converters, motor plus proportional valve or dual proportional valve control, and integrated or separate electrical-mechanical cabinet designs. Its simple structure, convenient maintenance, reliable operation, and low-noise performance make it suitable for demanding pumped-storage power plant applications.

Dimenensions

Overall dimensions drawing of MGC6000 governor control cabinet with front side and rear views

Control Diagram

Technical Parameter

Specifications	Technical Data
Cabinet Features
Integrated electrical-mechanical cabinet dimensions	800 × 800 × 1860 mm (L × W × H), customizable
Cabinet weight	300 kg
Standard AC operating voltage	AC 220 V ±15%
Standard DC operating voltage	DC 110 V ±10%, DC 220 V ±15%
Load capacity	3000 W (VA)
Dielectric withstand test	1.5 kV, 1 min
Protection degree	IP65
Operating temperature range	-40 to 65°C
Insulation resistance	>10 MΩ
Leakage current	<1 mA
Control Signal Output
Servo motor	Servo motor driver output
Proportional valve	Analog current channel, 4–20 mA
Input Characteristics
Digital input	DC 24 V, LED indicator, fully isolated
Analog input	Voltage 0–10 V, current 4–20 mA, LED indicator, fully isolated
Output Characteristics
Digital output	DC 24 V, LED indicator, fully isolated
Analog output	Voltage 0–10 V, current 4–20 mA, LED indicator, fully isolated
Frequency Measurement Specifications
Measurement method	Frequency measured by controller body
Grid frequency	AC 30–150 V, 90–110% rated frequency
Unit frequency	AC 0.3–150 V, 7.8–110 Hz
Gear-disc speed measurement	Non-contact proximity switch, DC 24 V supply, 1–110 Hz
Frequency measurement resolution	0.001 Hz
Frequency measurement channels	Residual unit voltage frequency, system frequency, unit gear-disc speed

Performance Parameter

Specifications	Technical Data
Stability Performance
Relative speed fluctuation of generating unit	< ±0.15%
Stable fluctuation of guide vane opening	< 0.1%
Maximum nonlinearity of static characteristic curve	Maximum nonlinearity of static characteristic curve < 0.3%
Speed dead band	< 0.02%
Dynamic Characteristics
Automatic startup time (generation direction)	30–120 s, adjustable
Automatic startup time (back-to-back mode)	100–300 s, adjustable
Governor System Parameter Settings
Permanent speed droop adjustment range	0–10%
Speed droop adjustment range	0–10%
Online manual frequency dead band	0 to ±1.5%
Speed adjustment range	90–110%
Power adjustment range	0–105%
No-load to full-load adjustment time	20–300 s
Relay deviation during operation mode switching	< 0.3%
Relay deviation during dual-power supply switching	< 0.1%
Relay deviation during dual-controller switching	< 0.1%
Proportional gain Kp range	0–20
Integral gain Ki range	0.01–10 （1/s）
Derivative gain Kd range	0.01–10 s
Generation direction mode transition reliability	≥ 100.00%
Pumping direction mode transition reliability	≥ 100.00%
Governor system availability	≥ 99.99%
Mean time to first failure	≥ 30,000 h