Power-to-Gas-Gas Storage-Gas Turbine Capacity Optimization Configuration Method and System for Abandoned Wind Participating in Grid Frequency Regulation

Abstract

The invention discloses a power-to-gas-gas-storage-gas turbine capacity optimization configuration method and system in which abandoned wind participates in power grid frequency regulation. First, it is innovatively proposed to use abandoned wind to produce natural gas through PtG, store it in a gas storage tank, and pass it through a gas unit (NGGU ) operation scenario where power generation participates in frequency regulation, and a coordinated operation strategy for each device is proposed; then, according to the above operation strategy, a cost-benefit model for PtG, gas storage tank, and NGGU participating in the frequency regulation process is constructed in this paper, in order to maximize the net income as The goal is to achieve the optimal configuration of the capacity of each device; finally, with reference to the actual wind curtailment of a certain wind farm and the actual command issued by an automatic generation control (AGC), the planning and calculation are carried out through the particle swarm optimization algorithm. The economics and feasibility of participating in frequency regulation auxiliary services in the power market under the optimized configuration of PtG, gas storage and NGGU capacity with PtG technology.

Description

technical field [0001] The present invention relates to the technical field of renewable energy consumption, in particular to a power-to-gas-gas storage-gas turbine capacity optimization configuration method and system in which abandoned wind participates in power grid frequency regulation. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Power-to-gas (PtG) technology provides a new solution for the on-site consumption of renewable energy. PtG converts the output of renewable energy that is difficult to absorb during the period of wind curtailment into natural gas or hydrogen. [0004] At present, there have been many related technical researches on PtG technology to improve the level of wind power consumption in the system. The existing technologies use PtG equipment to convert surplus wind power into natural gas, which is stored or utiliz...

AI Technical Summary

Problems solved by technology

The existing technology adopts the joint frequency regulation of PtG and gas turbine, but its joint call strategy is relatively simple, and the group with lower cost is prioritized, without considering the difference in frequency regulation performance between the two, and the current frequency regulation auxiliary service market is aimed at different frequency regulation There will be different gains in performance

In the existing technology, the PtG plant is regarded as the load side, and the PtG plant is responded to the demand side to realize the real-time response to the AGC command. However, this form of frequency modulation requires high wind curtailment, and it is difficult to perform frequency modulation when there is no wind curtailment. And when the demand side responds, it will lead to a decrease in the power of the PtG plant, which will reduce the utilization rate of the abandoned wind; while only using the power grid purchase method will increase the cost of frequency regulation, which will further reduce the economy of the PtG equipment that is originally economical.

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