The invention provides a liquid level adjusting method and
system for an offshore green
hydrogen floating type production storage and transportation platform, and the method comprises the steps: obtaining collection data sent by a plurality of monitoring modules in real time, determining a rolling main period and a rolling amplitude value according to a
rolling angle of the platform, and determining the rolling amplitude value of each
storage tank according to the current liquid level of each
storage tank and preset geometric parameters of each
storage tank; the oscillation period of each storage tank is determined, and the target liquid
filling rate of each storage tank is determined according to a preset weight array, the geometric parameters of each storage tank, a preset execution step length, a rolling amplitude value, the position of each storage tank, the current liquid level of each storage tank, the oscillation period of each storage tank, the rolling main period, the tank position weight, the current phase of the platform and the current phase of each storage tank; and according to the target liquid
filling rate of each storage tank, opening and closing of each pump and each valve are controlled, so that each storage tank is subjected to liquid filling and discharging. According to the method, the target liquid
filling rate of each storage tank is automatically determined, so that multi-tank collaborative optimization is carried out, and the stability of the platform is ensured.