Optimizing and dispatching method for microgrid economical operation on basis of multiple time scale coordination

A multi-time scale, economical operation technology, applied in instruments, data processing applications, computing, etc., can solve the problem of inability to meet the microgrid economy, security, energy saving and emission reduction, lack of multi-time scale coordination optimization, and inability to guarantee long-term operation. Economic and other issues, to achieve the effect of reducing economic costs and pollution emissions, reducing the difficulty of development and integration, and improving safety and reliability

Inactive Publication Date: 2011-09-14
ZHEJIANG UNIV
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Problems solved by technology

Most of the existing research focuses on the optimal scheduling of micro-grid real-time economic operation, ignoring the impact of large-time-scale planning (such as the day before) on the economics of system operation, and lacks multi-time-scale coordination and optimization; Simplified heuristic strategy and overly complex mixed integer nonli

Method used

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  • Optimizing and dispatching method for microgrid economical operation on basis of multiple time scale coordination
  • Optimizing and dispatching method for microgrid economical operation on basis of multiple time scale coordination
  • Optimizing and dispatching method for microgrid economical operation on basis of multiple time scale coordination

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Embodiment

[0118] consider as figure 2 In the microgrid example system shown, according to the method described above, it performs optimal scheduling of economic operation.

[0119] The present embodiment realizes on the PC machine of following environment configuration:

[0120] Intel Core 2 Duo E8400 3.0GHz, 12GB DDR3 1333MHz Dual Channel

[0121] Microsoft Windows 7 Enterprise x64, Visual Studio 2010

[0122] Use IBM ILOG CPLEX 12.1 as mixed integer linear programming solver and Ipopt 3.9 as nonlinear programming solver.

[0123] First, calculate the admittance matrix of the microgrid nodes (results omitted), and linearize the cost-output curves of all controllable power sources piecewise. The form of piecewise linearization is as follows image 3 shown. Taking a certain type of fuel cell as an example, the parameters after linearization are shown in Table 1. Using the piecewise linearization model, that is, the mixed integer linear programming model can be used to model the day-...

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Abstract

The invention discloses an optimizing and dispatching method for microgrid economical operation on the basis of multiple time scale coordination, comprising the following steps: dividing microgrid economical operation into two time scales, namely a dayahead plan and real-time dispatching; in the dayahead plan, dividing one dispatching period into a plurality of time intervals, and modelling into a mixed integer linear programming program based on the dayahead prediction data; and during the real-time dispatching period, complying with the startup and halt result of the dayahead plan, and modelling into a nonlinear plan based on real-time ultra-short term prediction data. In the optimizing and dispatching method, the coordinated mechanism of two time scales is designed, the dispatching scheme obtained with the method not only can satisfy the economic factors of a long time scale but also can satisfy safe operation constraints, such as the inner microgrid voltage, carrying capacity and the like of short time scales, and the capacity fluctuation of new energy is smoothened. The method is suitable for optimizing and dispatching economical operation in the parallel and single network operation of a micro power grid composed of a controllable power supply, an uncontrolled power supply and energy storage equipment of any type and any volume proportion.

Description

technical field [0001] The invention belongs to the technical field of power system operation, simulation, analysis and dispatching, and in particular relates to a microgrid economical operation optimization dispatching method based on multi-time scale coordination. Background technique [0002] Distributed power generation technology is one of the key technologies for the development of the electric power industry in the 21st century. It has changed the pattern of traditional power production and supply from the bottom, and has many advantages such as low investment, low energy consumption, high reliability, flexible power transmission, and fast restoration of power supply. With the promotion and application of renewable energy represented by wind energy and solar energy in countries around the world, the advantages of distributed power generation technology in energy saving, emission reduction, and prevention of large-scale power outages have been unanimously recognized by...

Claims

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Application Information

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IPC IPC(8): G06Q10/00G06Q50/00
Inventor 江全元耿光超石庆均汪海蛟王云刘霞程玮薛美东
Owner ZHEJIANG UNIV
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