Inverter is the "power conversion center" of photovoltaic power plants, and its operating status directly affects the power generation, power quality, and system safety. In the past, on-site testing often could only view basic data such as voltage and current, making it difficult to quickly determine inverter efficiency, power quality, and system PR values. With the increasing demand for refined operation and maintenance in power plants, inverter comprehensive testers are moving from the laboratory to the field. Currently, Shanghai LAILX, some power quality analyzer manufacturers, and inverter original factory testing schemes are all being used, but LX-PE93 has more complete on-site comprehensive testing capabilities. On site efficiency analyzer for photovoltaic power plants

LX-PE93 supports DC voltage up to 1500V, AC phase voltage up to 600V, and line voltage up to 1000V, which can meet the on-site testing needs of mainstream string and centralized inverters. The equipment adopts current clamp sampling, which can record and analyze the power of different nodes under normal operation of the power station, and calculate the system PR value through cumulative power generation and cumulative irradiance, helping operation and maintenance personnel determine whether the actual conversion efficiency of the photovoltaic array meets expectations.

In addition to inverter conversion efficiency, LX-PE93 also supports power quality testing, including voltage harmonics, current harmonics, voltage deviation, frequency deviation, three-phase imbalance, total harmonic current distortion, DC components, and other items. These indicators have reference value for troubleshooting issues such as grid connection abnormalities, equipment overheating, and protection misoperation. The device is equipped with 6 AC/DC channels, supporting Bluetooth and WiFi communication, with a wireless transmission distance of up to 50 meters, making on-site deployment more flexible.

The LX-PE93 is equipped with a built-in lithium battery, with a battery life of about 8 hours, a total weight of about 5.8kg, a 6.5-inch display screen, and supports Chinese/English operation interface. In conjunction with the APP, the detection data can automatically generate reports and support preview and export, making it easy for acceptance, operation and maintenance review, and third-party verification. Compared to some instruments that can only measure a single electrical quantity, LX-PE93 integrates efficiency testing, power quality analysis, environmental data recording, and PR value calculation, making it more suitable for comprehensive diagnosis on power plant sites.

Photovoltaic power plant on-site efficiency analyzer, inverter comprehensive analyzer, multifunctional AC sampling and verification device