For ordinary residents, commercial and industrial users and other public buildings users, we provide photovoltaic power generation system solutions, relying on its PV module manufacturing companies, design institutes, engineering companies and other professional organizations, one-stop service will provide to users from the project consulting, design, installation, maintenance, support, grid monitoring system upgrades and other aspects, we committed to develop and apply the distributed photovoltaic power generation, advocate the green and healthy way of life.
Ⅰ Detailed construction process of distributed PV project
Familiar with design
1, The capacity of the system;
2, Battery board (category, parameters, quantity, etc.);
3, String design (preliminary estimates of the size of the box);
4, The number and size of the confluence box;
5, Cable type, quantity, size;
6, Inverter type, quantity, size;
7, The number and size of grid box;
8, Monitoring system (with large LCD screen, consider the power supply);
9, The components fixed installation form;
10, The initial installation of equipment and equipment at site
Ⅱ On-site confirmation
1, Confirm the installation site size (actual size and drawing error);
2, Increasing construction equipment will not impact the installation at site.
3, Determine the installation position of the hub boxes (considering wiring, fixed, shadow, operation);
4, Selected distribution room according to the equipment (sometimes including monitoring computer) number, size, display mode, spacing requirements.
5, Determine whether door of the power distribution room big enough for equipments go into.
6, The cable line, to confirm whether the existing pipeline or bridge can meet the cable wiring
7, Determine the specific location of the network (provide the nearest outlets if the conditions permit to)
8, Confirm the installation position of the big screen;
9, Confirm the location of power station grounding
Ⅲ Preparation of construction paperwork
1, Draw the construction plans as detail as possible according to the collected data.
Construction drawings should pay special attention to the requirements of the owners (such as technical agreements, etc.).
2, Draw the main material list according the construction drawings.
The main material list should close the actual amount of the contract, and consider the material requirements of Party A.
3, Prepare the construction of technical disclosure according to the construction drawings and technical agreement.
4, Draw material approach plan according to the construction progress plan.
Ⅳ Site construction
1, The location of the bomb line;
2, Supports, embedded parts installation;
3, Component installation fixed
4, Put the line alone with the solt;
5, Equipment installation;
6, Equipment wiring;
Ⅴ System debugging
1, View and deal with the shadow of the battery board;
2, Check the reliability of battery wiring in each box;
3, Group string voltage measurement;
Is the group string voltage within a reasonable range.
4, insulation resistance measurement;
Interphase, relatively more than 0.5M Omega, the two loop is greater than 1M. (measured by megameter).
5, Grounding insulation resistance measurement;
All the different uses and different voltage electrical equipment should be used in a general earthing body, grounding resistance less than 4 Omega (measured by ground resistance tester).
6, Grid operation;
Observe the normal operation of the equipment(check the device specification), measure the output current and voltage of the inverter, to confirm the accuracy display data of the inverter.
7, Monite software debugging
8, Record power generation data
Ⅵ Personnel training and data transfer
6.1 Personnel training
1, Write the photovoltaic monitoring system operation manual, photovoltaic system operation manual, user maintenance manual according to the characteristics of the project.
2, Prepare the inverter manual, photovoltaic grid cabinet instructions, DC confluence cabinet instructions, weather station instructions and other important equipment specification involved in the project.
3, Focus on the simple principle of photovoltaic power generation, the distribution of PV modules, equipment distribution sites, the operation details need to pay attention to .
4, The demonstration of how to operate, and asked the trainees to operate independently, and correct errors may occur.
5, Record the name and telephone number of the staffs involved in the training, in order to contact when the system failure or need to maintenance later.
6.2 Data transfer
1, Draw the final draw blueprint in the construction drawings on the basis of the modification according to the actual construction site and the actual size of the site;
2, Training materials, equipment specifications;
3, The construction of inspection data;
4, Power generation operation record;
5, Provide the receipt form of the completed data and the equipment transfer form, recipient signature and copy to store.