Source-load coordinated frequency modulation method based on a load frequency control model

A load frequency control and model technology, which is applied in load forecasting, energy storage, and AC network load balancing in AC networks, can solve problems such as difficulty in meeting user load demands, waste of renewable energy, increased microgrid construction and investment costs, etc. question
CN108565874AActive Publication Date: 2018-09-21HEFEI UNIV OF TECH
6 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2018-09-21

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a source-load coordinated frequency modulation method based on a load frequency control model. The method comprises steps of: 1, using a micro gas turbine unit, a small-scale hydroelectric generating unit and a flywheel energy storage system as a frequency modulation unit; 2, establishing a load frequency control model corresponding to the micro gas turbine unit, the small-scale hydroelectric generating unit, the flywheel energy storage system, wind power generation, photovoltaic power generation and a user load; 3, establishing a micro-grid MDP mathematical model for any region of an island two-region multi-source micro-grid; 4, acquiring data required by source-load coordinated frequency modulation of the island two-region micro-grid; and 5, solving the MDP mathematical model by using a simulated-annealing-based Q learning theory algorithm. The frequency of the island two-region micro-grid system is stabilized by the source-load coordinated method and an AGC controller based on the learning optimization method, such that system safety stability is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of micro-grid control, and specifically relates to a load frequency control model and source-load coordinated frequency modulation method of a micro-grid with heterogeneous energy sources and two regions. Background technique

[0002] The isolated island microgrid has the advantages of less pollution, high reliability, and high energy utilization efficiency. Random changes in medium load, these factors will cause the active power of the island microgrid to lose balance, and the frequency will deviate greatly from the rated value, exceeding the range of safe operation. Therefore, when the microgrid operates in an island mode, it is necessary to ensure its own voltage stability and maintain frequency stability, and it is necessary to effectively adjust the frequency of the microgrid.

[0003] At present, there is little research and attention on the micro-grid system in the island and two regions, and there is a lack o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More