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24 08, 2024

Factors affecting the power generation of photovoltaic power plants

By |2024-08-24T09:31:41+08:00August 24th, 2024|Guideline|0 Comments

For investors in photovoltaic power plants, every additional kilowatt hour of electricity generated by the power plant generates an additional kilowatt hour of income, as the power generation of the power plant directly affects the investment return cycle. Therefore, the most important concern for investors is the power generation of the power plant. The power generation of a photovoltaic power station can be affected by many factors, such as the quality of photovoltaic modules, inverters, cables, installation orientation and inclination angle of modules, dust and shadow obstruction, photovoltaic module inverter ratio system scheme, grid quality, etc.   The impact of shadow occlusion on power generation Among the many factors that affect the power generation of photovoltaic power generation systems, shadow shading is a common one. Common shading mainly includes power poles, trees, guardrails, bird droppings, dust, and front and rear row shading of components. During the construction process of many power plants, it is often impossible to completely avoid shadows, [...]

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16 08, 2024

How to avoid power factor drop caused by industrial and commercial photovoltaic storage systems?

By |2024-08-16T14:38:35+08:00August 16th, 2024|Guideline|0 Comments

In recent years, with the decline in domestic battery cell costs and the gradual improvement of time-of-use electricity price mechanisms in various provinces, photovoltaic and energy storage systems have been changing with each passing day, and the capacity connected to the grid has increased significantly, and the impact on the grid has gradually become apparent. Among them, the problem of reduced power factor is particularly prominent. Power factor is an important indicator to measure whether an enterprise's electricity consumption is economical. With the popularization of photovoltaic power generation, some enterprises will also consider installing energy storage systems. So how can we avoid the situation of reduced power factor? The power factor is directly related to the power loss in the power grid, the voltage fluctuation and voltage loss of the power supply line, as well as the safe and economic operation of the power system and the rational use of energy. What is power factor? In industrial enterprises, commonly used [...]

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10 08, 2024

Introduction to four application scenarios of photovoltaic + energy storage system

By |2024-08-10T11:23:05+08:00August 10th, 2024|Guideline|0 Comments

There are many benefits of photovoltaic plus energy storage. First, it can ensure a more stable and reliable power supply. The energy storage device is like a large battery that stores excess solar power. When there is insufficient sunlight or a large demand for electricity, it can provide electricity to ensure continuous power supply.   Secondly, photovoltaic plus energy storage can also make solar power generation more economical. By optimizing operation, it can allow more electricity to be self-generated and self-used, reducing the cost of purchasing electricity. In addition, energy storage equipment can also participate in the power auxiliary service market to bring additional benefits. The application of energy storage technology makes solar power generation more flexible and meets various electricity needs. At the same time, it can also work with virtual power plants to achieve the complementarity of multiple energy sources and the coordination of supply and demand. Photovoltaic energy storage is different from pure grid-connected power generation. It [...]

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3 08, 2024

Common faults and solutions of inverters

By |2024-08-03T14:03:37+08:00August 3rd, 2024|Guideline|0 Comments

As an important component of the entire power station, the inverter can detect almost all parameters of the power station, from the DC components on top to the grid connected equipment on the bottom. If there is an abnormality, the health status of the supporting equipment in the power station can be checked through the feedback information from the inverter. No mains connection Reason for malfunction: Indicates that there is no connection to the mains or the AC circuit breaker is disconnected, causing the inverter to not detect the voltage of the mains. Solution: Determine whether the power grid has been cut off. If the power grid has been cut off, wait for the power grid to resume supply. If the power supply of the grid is normal, use a multimeter to measure the AC output voltage in the AC voltage range to see if it is normal. First, measure the output port of the inverter and check if there [...]

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27 07, 2024

Types and specifications of photovoltaic grounding

By |2024-07-27T13:37:51+08:00July 27th, 2024|Guideline|0 Comments

In the photovoltaic power station system, grounding design is a crucial part of electrical design, which is related to the safety of equipment and personnel in the power station. Good grounding design can ensure that the power station operates in a safe environment for a long time, reduce the frequency of faults, and improve the overall operational efficiency of the power station.   What is grounding? Grounding refers to the connection of the neutral point of the power system and electrical equipment, the exposed conductive parts of electrical equipment, and the conductive parts outside the equipment to the ground through conductors. It can be divided into several types: working grounding, lightning protection grounding, and protective grounding.   The function of grounding? Prevent electric shock The impedance of the human body is closely related to the environmental conditions it is in. The more humid the environment, the lower the impedance of the human body, and the more susceptible it is to [...]

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20 07, 2024

Eight major differences between air cooling and liquid cooling in energy storage systems

By |2024-07-20T09:37:01+08:00July 20th, 2024|Guideline|0 Comments

Energy storage system is the key support for building a new power system. It can convert electrical energy into chemical energy for storage so that it can be released when needed. At present, air cooling and liquid cooling are the two commonly used heat dissipation methods in energy storage systems.   Different heat dissipation principles Air cooling is to remove heat through air flow to reduce the surface temperature of the device. The advantages of air cooling are simple structure and low cost, but its heat dissipation effect is greatly affected by factors such as ambient temperature and air circulation, and is not suitable for high-power and high-density equipment. Liquid cooling is to remove heat through liquid circulation to reduce the internal temperature of the device. The advantages of liquid cooling are good heat dissipation effect and high stability, but its cost is high and it requires maintenance of the liquid circulation system. Different applicable scenarios The air cooling system [...]

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13 07, 2024

What is the difference between photovoltaic inverters and energy storage inverters?

By |2024-07-17T11:07:34+08:00July 13th, 2024|Guideline|0 Comments

In the field of new energy, photovoltaic inverters and energy storage inverters are important devices that play an indispensable role in our lives. But what is the difference between these two? We will conduct in-depth analysis of these two inverters from the aspects of structure, function, and application scenarios.   Structural differences Firstly, in principle, an inverter is mainly a device that converts DC power into AC power. It utilizes the switching characteristics of semiconductor devices such as field-effect transistors or thyristors to control the power supply voltage and current through rapid switching, thereby achieving the conversion of DC to AC power. Energy storage inverters (PCS) are a broader concept that involves converting and regulating electrical energy through power electronic devices to achieve power transmission, conversion, and control. PCS mainly includes modules such as rectification, inverter, DC/DC conversion, among which the inverter module is just one of its components. Functional characteristics From a functional perspective, photovoltaic inverters mainly focus on [...]

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3 07, 2024

Principle and implementation of photovoltaic inverter anti-reverse flow

By |2024-07-03T15:45:45+08:00July 3rd, 2024|Guideline|0 Comments

Photovoltaic inverter backflow prevention refers to a technical measure in a photovoltaic power generation system to prevent the power generated by the photovoltaic system from flowing back into the power grid. This technology ensures that the output power of the photovoltaic system does not exceed the actual power demand of the user, thereby avoiding adverse effects on the power grid or potential safety hazards. The demand scenarios for photovoltaic inverter backflow prevention are mainly concentrated in the following aspects: Residential photovoltaic system In the photovoltaic power generation system installed by residential users, if the power generation of the photovoltaic system exceeds the actual power demand of the household, the excess power may flow back into the grid. This may not only affect the stability of the grid, but also involve complex electricity billing and subsidy issues. Therefore, the photovoltaic system of residential users needs to have a backflow prevention function to ensure the balance between power generation and power consumption. [...]

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29 06, 2024

How to increase the power generation of photovoltaic power stations?

By |2024-06-29T14:33:09+08:00June 29th, 2024|Guideline|0 Comments

As an important component of clean energy, photovoltaic power stations are increasingly used around the world. Increasing the power generation of photovoltaic power stations can not only improve the return on investment, but also maximize the use of renewable energy and reduce dependence on fossil fuels. So, how to increase the power generation of photovoltaic power stations? 1.Optimize the design of photovoltaic power stations 1.1. Site selection optimization: The site selection of photovoltaic power stations has a vital impact on the power generation. Choosing a location with sufficient sunshine and less shadow is the primary condition for improving the efficiency of photovoltaic power generation. Topography, climate and surrounding environment will affect the site selection decision of photovoltaic power stations. 1.2. Component selection: High-efficiency photovoltaic components are the basis for increasing power generation. There are differences in conversion efficiency between photovoltaic components of different brands and models. Choosing more efficient components can significantly increase power generation. In addition, attention should be paid [...]

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22 06, 2024

How can industrial and commercial energy storage reduce capacity (demand) electricity charges?

By |2024-06-29T14:33:59+08:00June 22nd, 2024|Guideline|0 Comments

How can industrial and commercial energy storage reduce demand/capacity electricity charges? This is a focus of many companies. Before answering this question, we first need to understand what demand/capacity electricity charges are. The basic electricity price reflects the capacity cost in the enterprise cost, that is, the fixed cost part. The basic electricity fee can be calculated in one of three ways: transformer capacity, contract maximum demand, and actual maximum demand. The basic electricity fee paid by the user each month is only related to its capacity or maximum demand, and has nothing to do with its actual electricity consumption. The electricity price refers to the electricity fee that users need to pay for their actual electricity consumption, usually calculated per kilowatt-hour (kWh). It is a major component of the electricity bill and is directly related to the user's electricity consumption. The electricity price reflects the electricity cost in the enterprise's electricity cost. When calculating the electricity price, the actual [...]

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