Products

Our water turbines and pump turbines can meet a wide range of customer needs because HM HYDRO designs turbines optimized for various head and discharge. Our product lineup includes Francis turbines, Kaplan turbines, Pelton turbines, Deriaz turbines, Bulb turbines, etc. The characteristics and performance of our turbines are verified through our own model tests stand to ensure excellent efficiency and stability.

HM HYDRO designs and delivers hydroelectric generators worldwide to meet the unique power generation capacities and rotational speeds of each plant. For the generator-motors used in pumped storage power plants, HM HYDRO offers both constant-speed machines that operate at a constant rotational speed and adjustable-speed machines with variable rotational speeds, and HM HYDRO can also replace constant-speed machines with adjustable-speed machines. With these technologies and products, HM HYDRO contributes to the stability of power supply and power systems.

Structure of Generator/Motor(Fixed-speed machine and adjustable-speed machine)

Adjustable-Speed Control Panel

The adjustable-speed control panel takes in system active power, system reactive power (voltage), and water turbine rotation speed, and calculates and outputs various control commands to control them to command values (target values), and is responsible for the core control functions of the adjustable-speed pumped storage power generation system. The controller that performs high-speed calculations for adjustable-speed control is configured as a dual system with two controllers to improve operational continuity.

Hokkaido Electric Power Co., Inc.
Takami Power Plant
Adjustable-speed control panel

Automatic Control Panel

The automatic control panel receives commands from the central feeder command station or control station and performs start/stop control of the generator/turbine. The power supply and CPU (central processing unit) are redundant, while the PIO (process input/output) is a single configuration. A panel with CPU is located in the switchboard room, and a remote PIO panel is installed in the power plant, with optical cables connecting these panels to reduce the number of cables.

Kyushu Electric Power Co., Inc.
Omarugawa Power Plant
Automatic control panel

Integrated Switchboard

For general hydraulic power plants, the number of panels has been significantly reduced by integrating generator instrument panels, generator protection relay panels, automatic control panels, auxiliary panels, AVR (automatic voltage regulator) panels, and speed regulator control panels, which were previously dispersed throughout the plant, into an integrated distribution panel.

Integrated switchboard (monitoring control, AVR control, regulator control, generator protection)

HM HYDRO handles ancillary equipment such as excitation transformers, electrical components for main circuits (generator circuit breakers, Isolated phase busducts, disconnectors, etc.), power receiving and distribution equipment station service use (station service transformers, power distribution panels, etc.), and static frequency convertor for pumped storage power plants, and propose optimal packages of these ancillary equipment based on overall plant system design.