Gdisoft Photovoltaic Monitoring System Software

Gdisoft Photovoltaic Monitoring System Software


General


With the supportive policies for photovoltaic industry development continuously introduced by the Chinese government, the solar photovoltaic power generation projects are constantly increasing. According to the news published by the National Energy Administration (NEA), by the end of 2015, cumulative installed capacity of China's photovoltaic power generation has reached 43.18 million kilowatts, which made China the country with the largest installed capacity of photovoltaic power generation in the world. With the construction and operation of large-scale photovoltaic power stations and distributed photovoltaic systems, the owners and grid companies have put forward high requirements for real-time monitoring of the equipment. According to the provisions of IEEE1547, the distributed power supplies with power exceeding 250kW must be installed with the monitoring systems, in order to monitor the access modes, active or reactive outputs and connection point voltages of DR. The monitoring technology is one of the key technologies to ensure the normal operation of the PV power station. Since the proportion of monitoring system in the project's initial investment is relatively small, people tend to overlook this part of market for a long time.


Functions to be implemented by Photovoltaic Monitoring System include:


1) The acquisition of real-time data and states of the photovoltaic power station, including the booster stations, various electrical equipment in power generation arrays, combiner boxes, inverters, solar panels, storage batteries and controllers, environment temperatures and other underlying equipment;


2) Underlying equipment failure warning;


3) Historical storage of important data;


4) Remote and local operations and controls to power station equipment. It integrates telemetering, telecontrol, telecomand and teleregulation as a whole, and needs to be highly reliable, in order to work uninterruptedly throughout the year.


Solution


The Gdisoft photovoltaic monitoring system software successfully transplants the grid operation monitoring system to the photovoltaic power generation operation monitoring, and integrates the on-site video monitoring, power generation operation monitoring, and production and operation management as a whole.


The photovoltaic power generation monitoring system can carry out real-time monitoring and control to the booster stations of solar photovoltaic power stations, as well as the battery arrays, combiner boxes, inverters, AC/DC power distribution cabinets, solar tracking control systems and other equipment, quickly master the operational conditions of power stations through a variety of charts and data, and its user-friendly interface, powerful analysis function, and complete failure alarm ensure the security, reliability and stable operations of the solar photovoltaic power generation system.


Basic Functions


Real-time monitoring of the voltages, currents, powers and operating conditions of various electrical equipment in booster station


Real-time monitoring of the voltages, currents, and operating conditions of the solar panel


The acquisition and display of lightning arrester states and circuit breaker states


Real-time monitoring of the inverter working states and its fault information


Display of detailed system operation parameters


Fault records and alarms


With power accumulation, system analysis, historical recording functions


Easy-to-use parameter setting function


System output currents, voltages, and instantaneous generated power, accumulative generated electricity


CO2, SO2 emission reductions, standard coal savings


Screen Display


1. System Operation Main Screen:


The monitoring system provides the function selection screen, and carries out real-time monitoring and display of the photovoltaic array filed environment, such as outdoor temperature, humidity percentage, light intensity and array surface temperature value, etc.


2. Bus Monitoring System Screen:


The monitoring system can monitor by areas in real-time the charging voltages and currents, accumulator voltages and temperatures (including accumulator conditions), and other information of various photovoltaic arrays, and provide abnormal indications and alarm prompts for the points of failure.


3. Inverter Monitoring Screen:


The monitoring system can produce and display the inverter voltage-time curves, power-time curves, DC-side input current real-time curves, and AC-side inverse output current curves, and also acquire and display the daily generating capacity and other electrical parameters.


4. Event Record Monitoring Screen:


The monitoring system can record a variety of events in the photovoltaic power generation site, such as abnormal communication acquisition, switch overturn, operation record and other event records, support queries by type, and change the settings for off-limit alarms;

 


5. Curve and Report Analysis Screen:


The monitoring system can form monthly bar graphs and yearly bar graphs for the photovoltaic power generating capacities, and covert them to carbon dioxide, sulfur dioxide emission reduction values; it also provides the solar radiation intensity trend curves and wind-speed variation trend curves


Customers’ Benefits


Firstly, customers can timely and effectively access to the real-time information of photovoltaic power stations, including the real-time information from solar-cell panels, combiner boxes, inverters, up to the primary and secondary equipment in the grid-connected step-up 110kV transformer substations, and the alarm and fault information, etc.


Secondly, the effective monitoring system can improve work efficiency and reduce the staffing and workload of photovoltaic power stations.


Thirdly, customers can access to the solar power capacity in real time, and calculate the effect of energy saving and emission reduction.


Fourthly, it brings the actual benefits to users, and the grid-connection penalties caused by power grid dispatching will be reduced for users thanks to the photovoltaic monitoring.


Successful Cases


(2013) Guodian Qinghai Golmud 40MWp Grid-connected Photovoltaic Power Station


(2013) Qinghai Ulan 20MWp Grid-connected Photovoltaic Power Station


(2014) Xinjiang Hami Xi'an Tianhong 20MWp Grid-connected Photovoltaic Power Station


(2014) Xinjiang Hami HXEC Junxin 20MWp Grid-connected Photovoltaic Power Station


(2014) Xinjiang Kashgar Shufu Junxin 20MWp Grid-connected Photovoltaic Power Station


(2014) Xinjiang Kashgar Shufu China Building Material 20MWp Grid-connected Photovoltaic Power Station


(2015) Xinjiang Kizilsu Kirghiz Atushi Baishide 20MWp Grid-connected Photovoltaic Power Station


(2016) Xinjiang Hami HXSC Huijucheng 30MWp Grid-connected Photovoltaic Power Station


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