| CPC H02J 3/004 (2020.01) [G05B 19/042 (2013.01); H02J 3/381 (2013.01); G05B 2219/2639 (2013.01); H02J 2203/20 (2020.01)] | 18 Claims |
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1. A virtual power plant (VPP) system using a renewable combined heat and power plant, comprising:
a plurality of distributed energy resources connected to a virtual power plant;
a virtual power plant output adjustment system connected to the virtual power plant, the virtual power plant output adjustment system comprising:
a virtual power plant output adjustment device including:
a renewable combined heat and power plant that produces electricity using at least one of a wood chip, a fuel cell, or by-product gas; and
a heat conversion device configured to receive a portion of power produced from the plurality of distributed energy resources and convert the portion of power into thermal energy;
a heat storage device configured to store the thermal energy converted by the heat conversion device; and
a heat supply device configured to supply the stored thermal energy to a heat load; and
a virtual power plant management device comprising a VPP control module, a transmitting/receiving module, a bidding module, a monitoring module, an analysis module, and a VPP output adjustment module, the virtual power plant management device configured to conduct a bidding by predicting a power generation amount of the plurality of distributed energy resources, analyze an output variation and error of the virtual power plant based on the power generation amount of the plurality of distributed energy resources, and stabilize an output variation of the virtual power plant by controlling a power generation amount of the virtual power plant output adjustment device, wherein the output variation and error include changes in power output based on any one of weather and climate conditions, load demand fluctuations, and differences between predicted and actual power generations,
wherein the virtual power plant management device is configured to
analyze a response amount at which the distributed energy resources additionally generate power in order to respond to an output variation of a variable power source connected to the virtual power plant and a response rate at which the distributed energy resources additionally generate power in order to respond to an output variation of the variable power source, and
adjust a power generation amount of the virtual power plant output adjustment device in response to power supplying in the virtual power plant being smaller than the power demand of load disposed in the virtual power plant due to the decrease in the output of the variable power source, or in response to the response amount and the response rate of the distributed energy resources not meeting power demand amount of the load disposed in the virtual power plant.
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