4000w Solar Power Off Grid Inverter

FT series :4000w solar power off grid inverter

      In the cable transmission line, there is no capacitive current in the DC transmission, while there is a capacitive current in the AC transmission line, which causes losses.

      In some special occasions, cables must be used for power transmission. For example, when high-voltage transmission lines pass through large cities, underground cables are used; when transmission lines pass through straits, submarine cables are used. Since the coaxial capacitor is formed between the cable core and the ground, the no-load capacitor current is extremely considerable in the AC high-voltage transmission line. For a 200kV cable, the capacitance per kilometer is about 0.2μF, and the charging power is about 3×103kw per kilometer. On the transmission line per kilometer, the annual power consumption is 2.6×107kw/h. In DC transmission, because the voltage fluctuation is very small, basically no capacitive current is added to the cable.

     In DC transmission, the AC systems on both sides do not need to run synchronously, but AC transmission must run synchronously. In AC long-distance transmission, the phase of the current will produce a significant phase difference between the two ends of the AC transmission system; although the frequency of the AC power of each grid-connected system is specified as 50HZ, it often fluctuates. These two factors cause the AC system to be unable to run synchronously, which needs to be adjusted with a complex and huge compensation system and a strong comprehensive technology. Otherwise, a strong circulating current may be formed in the equipment to damage the equipment, or cause a power outage accident of asynchronous operation. . In countries with less developed technology, when the AC transmission distance is generally less than 300km and the DC transmission lines are interconnected, the AC power grids at both ends can operate at their respective frequencies and phases without synchronous adjustment.

Hot Tags: 4000w solar power off grid inverter, China, manufacturers, suppliers, factory, customized, quotation, low price, buy discount, pricelist