8 Steps in the Grid-Tied Solar System Operation Process

Step in the operating process Grid connected solar power system

We must agree that when implementing a solar power project, there will be a lot of work to be done.

In order to be able to control and arrange work in a certain order, it requires us to have specific solutions and detailed plans to meet the installation and implementation of the grid-connected solar power system operation process . achieve the best performance.

So what are the steps in the process of operating an effective grid-connected solar power system? Let’s find out in detail the content below with VREnery!

Learn about grid-connected solar power systems

Grid-connected solar power systems operate on the principle of converting sunlight energy into electricity. Sunlight energy is absorbed by solar panels and converted into direct current (DC).

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This DC current is converted into alternating current (AC) through an inverter. AC current is connected to the national grid and supplied to electrical appliances in the home.

And below are the main components in a grid-connected solar power system:

  • Solar panels : This is the most important component of the system, responsible for absorbing sunlight energy and converting it into electricity.
  • Grid-tied inverter : The inverter is responsible for converting direct current (DC) from solar panels into alternating current (AC) suitable for the national grid.
  • 2-way meter : 2-way meter is responsible for measuring the amount of energy consumed from the grid and the amount of energy generated on the grid.
  • Electrical wires: Electrical wires are responsible for transmitting electricity from solar panels to the inverter and from the inverter to electrical equipment in the house.
  • Electrical cabinet: Electrical cabinet is responsible for protecting electrical equipment in the system.

Effective grid-connected solar power system operation process

Choose the right system

To choose a solar power system that suits your needs, you need to accurately determine the monthly electricity consumption of your family or business. And we need to consider the following factors:

  • Size and capacity appropriate to usage needs: The size and capacity of the solar power system need to match the electricity needs of the family or business. If the system is too small, it will not meet user needs, and if the system is too large, it will cause waste.
  • Quality and performance of components: Solar power system components need to be of good quality and high performance to ensure the system operates stably and effectively.
  • Installation conditions: Solar power system installation conditions need to ensure enough sunlight, not obscured by obstacles.
  • Cost: The cost of installing a solar power system also needs to be considered to choose a system that fits your budget.

Select system capacity

Solar power system capacity is calculated in kWp. One kWp is equivalent to the ability to produce 1 kilowatt of electricity under ideal conditions.

To calculate the appropriate system capacity, it is necessary to rely on the electricity needs of the home or business. Electricity demand can be calculated based on monthly electricity bills.

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The formula for calculating solar power system capacity is as follows:

System capacity = Annual electricity demand / System efficiency / 365

In there:

  • Annual electricity demand: Calculated in kWh
  • System performance: Calculated in %

For example: A family has an annual electricity demand of 5,000 kWh, system efficiency is 18.5%. The required system capacity is:

System capacity = 5,000kWh / 15% / 365 = 7.7 kWp

Choose the quality and performance of components

The main components of the solar power system include: solar panels, grid-connected inverters, 2-way meters, electrical wires and electrical cabinets.

Solar panels are the most important component of the system, determining the system’s ability to produce electricity. The quality and performance of solar panels need to be chosen carefully.

The grid-tied inverter is a component that converts direct current from solar panels into alternating current suitable for the national grid. The quality and performance of grid-connected inverters also need to be guaranteed.

Other components also need to be selected from reputable brands, with good quality and high performance.

Select installation conditions

Conditions for installing a solar power system need to ensure enough sunlight, not obscured by obstacles such as trees, houses, etc.

Solar panels need to be installed in the south direction to absorb the most sunlight.

Choose appropriate costs

The cost of installing a solar power system depends on many factors, including: system capacity, quality and performance of components, installation conditions,…

Before choosing a solar power system, you need to consult quotes from many different installation units to get the best price.

Prepare and install the system 

Determine the optimal installation location and direction

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The optimal installation location and direction for a solar power system is a place with lots of direct sunlight. The ideal installation direction is south, inclined from 10 to 30 degrees.

When determining the installation location, pay attention to the following factors:

  • The amount of free space required to install the system.
  • Direction of the roof or ground where the system is installed.
  • Shade from trees, buildings or other objects.

Check the system and connect components

Before installing the system, it is necessary to thoroughly check the components to ensure they operate normally. Components that need to be checked include:

  • Solar panels: Check to see if the panels are damaged or cracked.
  • Grid-tied inverter: Check if the inverter is operating normally.
  • 2-way meter: Check if the meter is operating normally.
  • Power cord: Check to see if the power cord is exposed or broken.

After thoroughly checking the components, install the system according to the manufacturer’s instructions. Steps to install a grid-connected solar power system include:

  1. Install the solar panel support frame.
  2. Install solar panels on the truss frame.
  3. Install grid-connected inverter.
  4. Install 2-way meter.
  5. Install electrical wires.

Note when installing solar power systems

When installing a solar power system, attention should be paid to electrical safety issues. The system installation steps need to be performed by a professional and experienced technical team.

Here are some things to note when installing a solar power system:

  • Make sure the solar power system is turned off before installation.
  • Use safety equipment when installing the system.
  • Install solar power systems in accordance with legal regulations.

Adjust and configure the system

Check and adjust basic parameters

After installing the solar power system, it is necessary to check and adjust the basic parameters of the system to ensure the system operates normally and effectively. Basic parameters that need to be checked and adjusted include:

  • Input voltage and current of solar panels.
  • Output voltage and current of the grid-tied inverter.
  • Input voltage and current of 2-way meter.

These parameters can be checked with specialized measuring devices or with solar power system monitoring software.

System configuration to optimize performance

In addition to checking and adjusting basic parameters, the solar power system can be configured to optimize performance. System configuration includes the following elements:

  • Choose the type of solar panel suitable for local climate and weather conditions.
  • Select the capacity of the grid-connected inverter to match the capacity of the solar power system.
  • Install the system in a location with lots of direct sunlight.
  • Clean solar panels regularly to remove dirt and leaves from the panel surface.

Properly configuring the solar power system will help the system operate more efficiently, save more electricity and prolong the life of the system.

Some tips to optimize solar power system performance

Here are some tips to optimize solar power system performance:

  • Install the system in the south direction, tilted from 10 to 30 degrees.
  • Make sure the system is not blocked by trees, buildings or other objects.
  • Clean solar panels regularly, at least every 6 months.
  • Replace damaged solar panels immediately.

Applying these tips will help the solar power system operate more efficiently, save more electricity and prolong the life of the system.

Monitor and track performance

Use monitoring devices and monitor system performance

Devices to monitor and monitor the performance of solar power systems include:

DeviceDescribe
Grid-connected inverterGrid-tied inverters often have built-in monitoring and performance monitoring functions of the system.
Specialized measuring equipmentSpecialized measuring devices can be used to measure basic parameters of the solar power system, such as voltage, current, capacity…
Monitoring softwareMonitoring software can be used to track and analyze solar power system performance data.

Review parameters and data to evaluate performance

Parameters and data that need to be considered to evaluate the performance of a solar power system include:

  • Amount of power generated: The amount of power generated is the most important parameter to evaluate the performance of a solar power system.
  • System efficiency: System efficiency is the ratio between the amount of power generated and the amount of solar radiation entering the system.
  • Saved electricity costs: Saved electricity costs are the economic benefits of a solar power system.

Regularly monitoring and monitoring the performance of the solar power system will help detect problems early and take timely corrective measures, ensuring the system operates effectively and sustainably.

System maintenance and cleaning

Perform periodic maintenance

Periodic maintenance is necessary to ensure the solar power system operates effectively and sustainably. Periodic maintenance includes the following tasks:

  • Check the system: Check whether the components are damaged, whether the connections are loose or not…
  • Clean solar panels: Remove dirt and leaves from the surface of the panels.
  • Check and replace damaged components: Replace damaged components to ensure the system operates normally.

Clean components to maintain performance

Cleaning components is necessary to maintain the performance of the solar power system. Dirt and leaves sticking to the surface of the panels can reduce the system’s power generation efficiency. Therefore, it is necessary to clean solar panels regularly, at least every 6 months.

Cleaning solar panels can be done using clean water and a soft cloth. Do not use strong detergents or sharp objects to clean the solar panel, as it may damage the surface of the solar panel.

In addition, other components of the solar power system also need to be cleaned periodically to ensure normal operation.

Troubleshooting and repair

Common problems with solar power systems include:

  • Damaged solar panels: Solar panels can be damaged due to impacts, falls, or weather impacts.
  • Faulty grid-tied inverter: The grid-tied inverter may be faulty due to overload, unstable voltage, or short circuit.
  • Broken 2-way meter: 2-way meter can be damaged due to overload, unstable voltage, or short circuit.
  • Open or broken electrical wires: Electrical wires can be exposed or broken due to impact, weather effects, or technical errors.

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To determine the cause of the problem, it is necessary to check the solar power system thoroughly. Specialized measuring devices can be used to measure basic parameters of the system.

Once the cause of the problem has been determined, timely repairs must be made to ensure the system operates normally.

Simple repairs can be performed by the user. However, complex repairs should be performed by a professional technician.

Timely troubleshooting and repair of the solar power system will help ensure the system operates effectively and sustainably.

Synchronize the system with the power grid

To ensure the solar power system is in sync with the grid, the following steps need to be taken:

  • Check the technical parameters of the solar power system: The technical parameters of the solar power system need to ensure compliance with the regulations of the power grid.
  • Check the equipment of the solar power system: The equipment of the solar power system needs to be installed and operated correctly to ensure the system operates stably.
  • Check the synchronization between the frequency and voltage of the system and the power grid: The system’s frequency and voltage need to be synchronized with the frequency and voltage of the power grid to avoid causing problems.

Before connecting to the grid, you need to register with the local electricity authority to receive a license to connect to the grid. After being granted a license, it is necessary to comply with regulations related to synchronizing the solar power system with the grid, including:

  • Use a certified grid-tied inverter: Grid-tied inverters need to be certified by reputable organizations to ensure the system operates safely and stably.
  • 2-way meter settings: 2-way meters are used to measure the amount of electricity generated and the amount of electricity consumed.
  • Comply with electrical safety regulations: Solar power systems need to be installed and operated in accordance with electrical safety regulations.

Synchronizing the solar power system with the power grid is an important process to ensure the system operates safely and stably. Checking and ensuring synchronization between the system and the grid, as well as registering and complying with regulations related to synchronization are necessary steps to carry out this process.

Periodic inspection and warranty

Perform periodic inspections according to the manufacturer’s instructions

To ensure the solar power system operates effectively and sustainably, periodic checks should be performed according to instructions from the manufacturer. Periodic inspection tasks include:

  • Check the system’s devices: Check if the devices are damaged, if the connections are loose, etc.
  • Clean solar panels: Remove dirt and leaves from the surface of the panels.
  • Check and replace damaged components: Replace damaged components to ensure the system operates normally.

Warranty and request support from the supplier

Solar power systems are usually warrantied for a period of 10 to 25 years. During the warranty period, if the system has problems, users can request support from the supplier.

Warranty work includes:

  • Repair damaged components: Supplier will repair damaged components to ensure the system operates normally.
  • Replace damaged components: If components are damaged beyond repair, the supplier will replace new components.

Periodic inspection and warranty of the solar power system is necessary to ensure the system operates effectively and sustainably. Performing periodic checks according to instructions from the manufacturer will help detect problems early and take timely corrective measures, ensuring the system operates normally.

In case of system failure, users can request support from the supplier to repair or replace damaged components.

3 Factors that determine the effective operation of a grid-connected solar power system

There are 3 main factors that determine the effective operation of a grid-connected solar power system :

  • Quality of the system
  • Installation location
  • Operation and maintenance

Quality of the system

System quality is the most important factor that determines the operating efficiency of a grid-connected solar power system. A high quality solar power system will use genuine components, have high durability and operate effectively.

Genuine components produced by reputable manufacturers will have better quality than components floating on the market. These components often have higher durability, more stable operation and are more energy efficient.

In addition, a high-quality solar power system needs to be installed properly by experienced engineers. Improper installation can lead to problems such as the system not generating power, ineffective power generation, or causing problems.

Installation location

Installation location is also an important factor that determines the operating efficiency of a grid-connected solar power system. Solar power systems need to be installed in a location with lots of sunlight to be able to generate electricity effectively.

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Ideal installation locations for solar power systems include:

  • Direct sun shines at least 6 hours a day
  • Not obscured by buildings or trees
  • Unaffected by shade from surrounding buildings or trees

Operation and maintenance

Proper operation and maintenance of O&M is also an important factor to help grid-connected solar power systems operate effectively. Solar power systems need to be cleaned regularly to remove dirt and leaves sticking to the surface of the panels.

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Cleaning the panels regularly will help improve the system’s power generation efficiency. In addition, solar power systems also need to be checked periodically to detect and fix problems early.

In short, for a grid-connected solar power system to operate effectively, it is necessary to ensure the quality of the system, installation location, and proper operation and maintenance.