Composite superconducting micro-grid system applied to stabilizing offshore wind power fluctuation

Abstract

The invention provides a composite superconductive micro-grid system applied to stabilizing offshore wind power fluctuation, and the system transmits offshore wind power to a shore through a flexible DC power transmission technology, and the offshore wind power enters a main power grid and water electrolysis hydrogen production equipment. In the transmission process, a composite superconducting system formed by combining a superconducting generator, a superconducting boosting transformer, a liquid hydrogen-superconducting mixed seabed alternating-current and direct-current cable and superconducting energy storage is established, high-capacity electric energy transmission is facilitated, and the cost is reduced. A micro-grid system of offshore wind power, a composite superconducting system, hydrogen storage and a fuel cell is further established, the storage, utilization and conversion technology of wind energy-chemical energy-electric energy hybrid energy is achieved, the system has the advantages of being clean, environmentally friendly, capable of being absorbed on site and the like, the advantages of superconducting energy storage and the fuel cell are effectively combined, stabilization of offshore wind power generation power fluctuation is achieved, and the energy utilization rate is increased. And good-quality electric energy is provided for power consumers. In the whole process, circulation conversion between hydrogen and liquid hydrogen and flow detection of the liquid hydrogen relay booster station are utilized, the composite superconducting system can be better cooled, comprehensive utilization of hydrogen energy and the composite superconducting system is achieved, and high operation and maintenance cost needed by a traditional refrigeration mode is avoided.

Description

technical field [0001] The invention belongs to the technical field of superconducting microgrids, and in particular relates to a composite superconducting microgrid system and working method applied to offshore wind power. Background technique [0002] In today's rapid development of global industrialization, the contradiction between energy demand and environmental pollution has become an urgent problem to be solved. Renewable energy is the key to solving the energy crisis and realizing sustainable development. Due to its advantages of convenient development and low construction cost, wind power has become the third largest renewable energy power generation method next to hydropower. Offshore wind power has abundant resources, high power generation utilization rate, and is close to the power load center to facilitate power consumption, etc. Advantages are becoming the focus of global attention. [0003] The intermittent and random characteristics of wind power generation ...

AI Technical Summary

Problems solved by technology

However, during the operation of the system, the superconducting transformer and superconducting energy storage device will inevitably have thermal disturbances to generate a certain amount of heat leakage, and the end of the liquid hydrogen pipeline of the superconducting submarine cable will also suffer heat loss when connected at room temperature.

Images