Photovoltaic power station output fast regulation and control method based on Combined Cooling Heating and Power

Abstract

The invention discloses a photovoltaic power station output fast regulation and control method based on a Combined Cooling Heating and Power. When supply exceeds demand in a power supply area, refrigeration is conducted on water in a cold water reservoir by the usage of redundant power; when the demand exceeds the supply in the power supply area, through a backboard water-cooling heat dissipation pipeline, a photovoltaic panel is cooled, and system output can be rapidly increased by 10-25%; when there is spike type load input in the power supply area, cooling processing can be carried out by a power station in advance according to a dispatching instruction, and a power generation capacity margin is increased. According to the photovoltaic power station output fast regulation and control method based on the Combined Cooling Heating and Power, temperature characteristics of photovoltaic batteries are used for stabilizing a natural supply and demand difference between photovoltaic station output and load demands, a transmission loss increase and resource waste caused by power long-distance delivery or photovoltaic power generation abandoning when the demand exceeds the supply are avoided, when the demand exceeds the supply, a means for rapidly increasing a photovoltaic power generation capacity, at the same time, part of hot water demands of the power station or surrounding facilities are satisfied, and the comprehensive utilization effect of energy is improved.

Description

technical field [0001] The invention relates to a method for quickly regulating and controlling output of a photovoltaic power station based on cogeneration of cold-heat-electricity, and belongs to the field of new energy power generation control. Background technique [0002] In recent years, the scale of solar energy development and utilization has rapidly expanded, technological progress and industrial upgrading have been accelerated, and costs have been significantly reduced. It has become an important field of global energy transformation. As of the end of 2015, the cumulative installed capacity of solar power generation in the world reached 230 million kilowatts, and the newly installed capacity in that year exceeded 53 million kilowatts, accounting for 20% of the world's newly installed power generation capacity. From 2006 to 2015, the average annual growth rate of photovoltaic power generation exceeded 40%, becoming the fastest growing energy variety in the world. T...

AI Technical Summary

Problems solved by technology

Traditional control methods need to use long-distance power transmission to send the surplus power out or directly discard light for the period when the power supply exceeds the demand in the region, resulting in increased network loss and waste of resources; but for the period when the supply is less than demand, there is no effective control method. The method is to quickly increase the output of photovoltaic power plants to narrow the power supply gap. Only conventional controllable power sources such as thermal power and hydropower can be used for load peak regulation. If these power sources are far away from the geographical location of the load, long-distance power transmission is required. Also cause network loss to increase

Therefore, the traditional control strategy cannot achieve the purpose of comprehensively optimizing the utilization of solar energy resources, and does not meet the latest guidelines of the National Energy Administration for the consumption of distributed energy nearby.

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