Renewable Energy Resources

This integrated solution for power generation, storage and energy saving for the realization of Carbon-Free Society provided by a comprehensive wiring system manufacture.

We propose custom support both types of selling all electricity for power company (FIT) and self-consumption of solar power generation.

Monitoring and Control Systems PVU-Finder®

The solar power generation intelligent Monitoring and Control Systems (PVU-Finder®) monitors and controls solar power generation where all electricity is sold to power company .

This system is used in around 2,900 solar power plants (generating capacity of 2.5 GW), mainly large-scale solar power plants throughout Japan.
This Monitoring and Control Systems from a comprehensive wiring system manufacturer with over 80 years of experience provides with continuous support for a purchase contract period of 20 years.

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    Custom design

    The system can be flexibly customized for medium-sized to large-scale power generation

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    Server linking

    Extensive experience with linking to overseas servers and servers of other companies

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    Safety

    Redundant configuration of the main devices enables stable monitoring

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    Reliability

    A reliable track record of participating in output control project by power company

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    Low-cost configuration

    DC1500V string monitoring system can be built into connection box

*1 PVU-Finder®: Monitoring systems for power plants where all electricity is sold

PVU-Finder® Solar Power Generation Remote Monitoring Systems

Solar power generation remote monitoring systems

Detect issues with solar power generation equipment at an early stage!

PVU-Finder is an integrated monitoring system equipped with string monitoring for high-voltage power plants and extra high-voltage power plants.

We offer flexible systems to meet customer demands according to solar power plants.
In addition, the system supports output control based on demand of power companies.

Main features

  1. Flexible customization to meet your needs

    We provide Monitoring and Control Systems cutomized to your equipment for low-voltage, high-voltage, and extra high-voltage power plants.
    We offer support for centralized, distributed and multi-string power conditioning systems (PCS).

  2. String monitoring for reduced maintenance costs

    Panel output degradation and failures are monitored string by string, abnormalities are checked on the monitor screen, and alert notifications are sent via email.
    This system can also contribute to the detection of wiring errors during installation and initial panel defects, as well as enhance the efficiency of maintenance with the use of MATAS.

  3. Streamlined system configuration and redundant data logger for stable monitoring

    The use of new I/O enables measurement according to the customer’s application with a compact device configuration.
    The monitoring and control systems are built with redundancy for stable monitoring.

  4. Use of terminal block with a built-in surge protection circuit without external SPD nor a noise suppression circuit

    The string measurement unit and SI (RS485) terminal block unit inside the Monitoring and Control Systems are equipped with a surge protection circuit and external noise suppression circuit for lightning resistance equivalent to JIS C 5381-21 category C2.

System diagram

System diagram

PVU-Finder® Output Control

Output control

Support for output control based on the demands of power companies!

This system supports PCS output control of solar power plants using old, new, and specified rules.
It can be implemented in solar power plants being newly constructed or existing power plants that are already operating.

Main features

  1. Support for output control based on the demands of power companies

    This system has been implemented at power companies in Kyushu, Hokkaido, Tohoku, Hokuriku, Chugoku, Shikoku and Chubu regions, and there are plans to support power companies in Tokyo and Kansai regions as well.

  2. Support for low-voltage, high-voltage, and extra high-voltage solar power plants

    We have a track record of implementing this system in solar power plants of all sizes, and CDT communication control, which is essential for real-time control of extra high-voltage power plants, is supported for major manufacturers including Ohkura Electric, Tsuken Electric Ind, and Oi Electric.

  3. Support for a wide range of PCS manufacturers

    We support companies including ABB, SMA, Delta Electronics, Yaskawa Electric, TMEIC, Hitachi, Nissin Electric, Sanyo Denki, Huawei, and Sungrow.

  4. Support for output control of solar power plants using specified, new, and old rules (shift to online operations)

    With the output control functions, it is possible to control the optimal output values for all solar power plants, remotely control on/off operations, and shift to online operations for solar power plants under old rules, thereby reducing power generation opportunity loss.
    Real-time output control can also be supported with CDT communication for extra high-voltage solar power plants.

System outline diagram

System outline diagram

Monitoring System Equipment Update

Monitoring system equipment update

We can provide a remote monitoring system that is suitable for solar power plant equipment updates or when replacing systems from other companies.

At the same time, we can provide PCS output control functions and additional services.

Main features

  1. Extensive experience

    Our monitoring system has been installed at more than 2,900 solar power plants across Japan. In terms of output control, we were the only monitoring system manufacturer selected for a demonstration project by power company, and our system is used in many power plant service areas where output control is required.

  2. A variety of monitoring functions

    • We offer systems to meet diverse needs, including low-voltage to extra high-voltage string monitoring, PCS monitoring, and high-voltage substation monitoring
    • Support for PCS of various companies including output control

  3. Expanded functions for convenience

    • Using MATAS® failure prediction software for smart maintenance and AI diagnosis
    • Integrated monitoring screen for multiple sites
    • PCS output optimal control in addition to output control support

Solar power generation monitoring systems

Solar power generation monitoring systems

String Monitor Unit

Air conditioning power reduction control systems

String monitoring for reduced maintenance costs

Panel output degradation and failures are monitored string by string, abnormalities are checked on the monitor screen, and monitoring notifications are sent via email.
This can also contribute to the detection of wiring errors during installation and initial panel defects, as well as enhance the efficiency of maintenance with the use of MATAS.

Main features

  1. Operates on own power supply
    (Uses connected PV string for power supply)

  2. Available in PV voltages of 600 to 1000 VDC and 1500 VDC

  3. Can be retrofitted with simple work, and measure up to 24 strings of current with a single unit

  4. RS485 wired connection or wireless connection selectable *Wireless available for up to 1000 V

  5. String current measured with high precision current sensors (measurement range: ±15A)

System configuration

System configuration

MATAS® MAintenance Timing Assist System

Maintenance timing assist system

Diagnose signs of performance degradation of solar power generation equipment

This system assists in effective maintenance by diagnosing signs of performance degradation of solar power generation equipment using data acquired at solar power plants and a proprietary calculation algorithm.

Main features

  1. Added a deviation rate evaluation function to MATAS® analysis to improve judgment accuracy

    This helps separate the effects of ambient shadows and dirt on panels from causes of equipment-specific aging defects.
    It also helps to visualize any variations in string power generation current. (Box plot chart)

  2. Added analysis result display functions using lists and graphs

    Visualization using lists and graphs allows for more efficient and pinpointed maintenance.

  3. Added functions for comparing solar radiation and generated power

    A function for evaluating the power generation capacity with respect to solar radiation was added to see the improvement effect objectively.
    A function for evaluating the current contribution ratio was added to evaluate daily string capability.

System outline diagram

System outline diagram

Determination of deviation rate and evaluation of current contribution index method

■Deviation rate evaluation
Deviation rate evaluation
■Evaluation of current contribution index method
Evaluation of current contribution index method
■Evaluation of current contribution index method
Evaluation of current contribution index method

Extension Cables and Solar-Related Products

Extension Cables, etc. and Solar-related Products

See here for more information on extension cables, etc. and solar-related products.

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Product Information

Feel free to contact us for more information aboutour company, products, and track record.

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