FAQ
It is not recommended to install wire mesh protection. Installing wire mesh protection on photovoltaic arrays may cause shadows in certain areas of the components, resulting in hot spot effects and affecting the overall power generation efficiency of the photovoltaic power plant. In addition, since qualified photovoltaic modules have passed the ice hockey impact test, protective nets are generally not required to be installed.
It is recommended to choose system accessory products that have been certified by national approval and certification agencies. The key components, raw material models, specifications, and manufacturers should be consistent with the certified products. In addition, the specifications, models, and technical parameters of all system accessory products should match the design scheme of the entire system. Generally speaking, components require a warranty of at least 20 years, while inverters require a warranty of at least 5 years.
The power generation monitoring data of distributed photovoltaic grid connected systems and the metering data of electricity meters may not necessarily be the same. If the same electricity metering equipment is used at the same grid connection point and the accuracy is exactly the same, then the data obtained should be the same. However, the monitoring equipment used in photovoltaic grid connected systems is often adopted by the system construction unit itself, while the electricity metering equipment is often installed by the power department. Therefore, the data obtained may have some differences depending on the equipment. The amount of error depends on the specific situation. The settlement of electricity and subsidy fees is based on the metering equipment installed by the power department.
Each power grid enterprise shall cooperate with the local energy regulatory department to carry out measurement, information monitoring, and statistics of distributed photovoltaic power generation within the coverage area of the local power grid. If the photovoltaic system is equipped with a corresponding monitoring system, it can achieve online monitoring of power generation. In addition, the monitoring system can also achieve online monitoring of key equipment parameters, power quality, environmental parameters, etc.
You can use a power quality analyzer to test the power quality at the grid connection point of the power station to see if it meets the national standard requirements. If it meets the requirements, the photovoltaic grid connected system will work stably. In the event of a malfunction in a typical photovoltaic system, a protective device will cut off the power supply, so it will not cause damage to household appliances.
Common faults of charging stations include: 1. inability to charge after starting; 2. Rechargeable batteries may not be able to be inserted into electric vehicles; 3. Time may not hold; 4. The charging button cannot be pressed. Generally speaking, AC belongs to slow charging, while DC belongs to fast charging. The AC charging station provides AC power for the on-board charger on electric vehicles, which charges the battery; The DC charger directly charges the battery without going through the on-board charger. The power of car chargers is generally small, so they are suitable for slow charging. The equipment itself has undergone national security certification and is equipped with various protective measures such as overvoltage, overcurrent, leakage, lightning protection, rain protection, and dust prevention, so there are no safety hazards. Once there is a malfunction, in addition to self checking and diagnosing the charging station and cutting off the power, maintenance personnel will promptly address the corresponding issues, ensuring safety during use.
