Whole process transient state simulation method supporting microgrid planning design

A technology of transient simulation, planning and design, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as micro-grid operation instability

Active Publication Date: 2015-01-07
SOUTHEAST UNIV
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Problems solved by technology

These problems may lead to the instability of the microgrid operation, so the modeling and simulation anal

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  • Whole process transient state simulation method supporting microgrid planning design
  • Whole process transient state simulation method supporting microgrid planning design
  • Whole process transient state simulation method supporting microgrid planning design

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Experimental program
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specific Embodiment approach

[0112] According to the requirements of power system planning and design, four calculations, including power flow calculation, stability calculation, short-circuit calculation and reactive power compensation calculation, need to be completed during the planning process. In the present invention, power flow calculation and reactive power compensation calculation are completed by data analysis method; stability calculation and short circuit calculation are completed by waveform analysis method. The specific implementation is as follows:

[0113] A. Data analysis method

[0114] In the case of steady-state operation, use formula (9) to investigate the operation of the microgrid under this configuration, check whether various components can meet the requirements in operation, and check whether the voltage and frequency of each measurement point in the microgrid meet the requirements;

[0115] M ( t ) = ...

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Abstract

The invention discloses a whole process transient state simulation method supporting a microgrid planning design. The whole process transient state simulation method supporting the microgrid planning design comprises the steps of building a microgrid model in PSCAD (Power System Computer Aided Design) or EMTDC (Electromagnetic Transients including DC) simulation software based on the planning result of the microgrid planning software, accomplishing microgrid transient state simulation in various working conditions through a microgrid whole process transient state simulation method, performing data analysis and waveform analysis of the simulation result through the whole process transient state simulation method, judging the microgrid running characteristics under the configuration and performing feedback compensation on a micro source capacity, putting forward an improvement program of the microgrim equipment configuration according to the analysis result and obtaining a reliable and stable microgrid planning result. According to the whole process transient state simulation method supporting the microgrid planning design, microgrid basic equipment is comprehensively taken into consideration, microgrid planning requirements in different conditions and working conditions can be met, and high adaptability can be obtained; feedback compensation supporting of the microgrid planning design from the perspect of microgrid transient state stability, limitation of an original microgrid planning method is solved and high practicability and project application values are obtained.

Description

technical field [0001] A whole-process transient simulation method supporting micro-grid planning and design belongs to the field of micro-grid system planning, more specifically, a method for realizing effective micro-grid planning by means of micro-grid large-disturbance transient simulation. Background technique [0002] Microgrid (MG) is an emerging energy transmission mode that increases the penetration rate of renewable energy and distributed energy in the energy supply system, which consists of different types of distributed power, energy storage systems, user terminals of loads, and related , protection devices and other components. The control objectives to be achieved by the microgrid control system are: to realize the stable operation of the grid-connected micro-grid and the large grid, and to ensure the output of the micro-power supply according to the predetermined value; Stable island operation of the microgrid; during island operation, the balance of active a...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 吴在军黄冬冬窦晓波胡敏强赵波孙旻孙纯军
Owner SOUTHEAST UNIV
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