Online detection system for new energy station yard

The invention discloses a new energy station field on-line detection system, which comprises a combiner box, a photovoltaic inverter, a box-type substation, an AGC (Automatic Gain Control) system, a frequency detection system and a power station detection system, the photovoltaic inverter is used for converting variable direct-current voltage generated by the photovoltaic solar panel into alternating current with mains supply frequency; the box-type substation is used for combining high-voltage switch equipment power distribution, low-voltage switch equipment, electric energy metering equipment, a reactive power compensation device and the like in one or more box bodies according to a certain wiring scheme; the frequency measurement accuracy is effectively improved, the difference value between the measured frequency and the rated frequency can be calculated after frequency measurement, the function is more powerful, online detection of the appearance and the working temperature of station equipment can be ac