Photovoltaic Insolation Monitor
Eliminates waste of approximately 2%
Maximizes the power generation
Lowers running cost
Utilized as a reference for the power generated by solar panels
Brings changes to the business management of soler power generation
A newly developed tool for insolation measurement with the same structure as solar cell modules.
An alternative to the pyranometer
Insolation measurement with the same structure as solar cell modules.
Accurate monitoring of power generation
Eliminates the error of approximately 2%. Further improves the accuracy of the business.
Early detection of the solar panel deterioration
Accurate measurement of the generated power enables the effective assessment of solar panel performances.
Streamlines the on-site maintenance management
The simultaneous aquisition of temperature data reduces the time, cost and manpower required for the maintenance.
No need to install or maintain thermometers
Dual roles as insolation monitor and thermometer.Also for improving the accuracy of measurement.
Eliminates measurement errors of approximately 2%, to accurately monitor the amount of the generated power.
Photovoltaic insolation monitor is a new tool developed for the measurement of insolation, with the same structure as solar cell modules, based on the technologies for environmental measurement and optical instruments of Ishikawa Trading.
It can be used as an alternative to the conventional pyranometer.
By eliminating the error of approximately 2%, normally experienced in the measurement by a pyranometer, this tool very accurately captures the amount of the generated power and supports the high-precision operation of the solar power business.
Elimination of measurement error of approximately 2% experienced in the conventional methods
In the measurement of the amount of solar power generation, the conventional pyranometer has an error of approximately 2%.
The reasons for this can be attributed to the facts that insolation measurement tools other than the meteorological pyranometer did not exist and that rigorous measurment was not coducted for the evaluation of power generation.
Even a slight error can create an enormous loss, if multiplied by the large generated power and the long operating years.
Photovoltaic insolation monitor brings a solution for this issue and support a high-precision business operation.
The conventional pyranometer produces a large error in the evaluation of the solar power generation, since it has a slow response (the blue line in the figure) even if a high-precision type is used.
Since the photovoltaic insolation monitor has the same output characteristics as solar panels, it can accurately measure the generated power, with high-speed response (the red line in the figure).
Excellent spectral sensitivity characteristics
Since the response of the conventional pyranometer has flat spectral sensitivity characteristics for all wavelengths (the red line in the figure), a wavelength range that the solar modules do not generate electricity is also included in the output, which leads to a large error in the measurement of power generation.
Since the photovoltaic insolation monitor has the same spectral sensitivity characteristic as the solar panel (the green line in the figure), the accurate amount of the generated power can be captured.
No need to install or maintain thermometers
The photovoltaic insolation monitor has a built-in temperature sensor.
Since this unit by itself conducts measurements of the insolation and the temperature directly beneath the panel, simultaneously and on the same location, the more accurate meteorological data can be captured, thus creating higher precision in the data aquisition of the generated power.
In addition, the cost and labor for installing and maintaining the pyranometer and thermometer separately are no more needed.
Effective for the deterioration checks and maintenance of solar panels
Panel deterioration by aging is accurately captured.
The lowering of generated power due to the solar panel deterioration by aging or damage can be identified any time by comparing the power generation from the photovoltaic insolation monitor and that from the solar panels in operation.
Panels, generating power lower than the standard, can be smoothly identified, thus contributing to the reduction of power generation losses and to the optimization of generation capacity.
Reduction of the time, cost and manpower for on-site maintenance
The photovoltaic insolation monitor, with its built-in thermometer, enables the aquisition of temperature data, simultaneously with the power generation measurement.
It eliminates the need for man-power and time to carry or set up multiple instruments for panel maintenance, thus enhancing the efficiency of on-site maintenance.
Examples of major usages
Unmanned monitoring on large-scale sites
24-hour real-time monitoring of the whole site can be enabled by placing the monitors in key points.
No need to deploy personnel.
Usable for portable operations
Particularly for small-scale sites.
Also useful as an emergency tool, in the event of natural disasters or panel failures.
IoT and cloud system for power generation monitoring (planned).
We propose a system for the age of big-data and IoT.
Enables an accurate business forecast
Error of 2% is eliminated.
Supports timely maintenance
Big data analysis enables real-time identification of the deterioration and breakdown.
As a result, timely maintenance is enabled, eliminating the waste such as periodic maintenance.
Enables efficient operation of solar panels
Visualization is available for panel replacement criteria.
Panel operation efficiency can be optimized, in support of stabilized business management.
Automated monitoring to support streamlining of the management
Unmanned monitoring is enabled, 24 hours a day and every day of the year.
ISHIKAWA TRADING Co., Ltd.
Shinkawa 4-6-10, Mitaka-shi, Tokyo, 181-0004 Japan