Alternating current/direct current microgrid economical dispatching based on multi-interval nondeterminacy and robust optimization

An uncertain and economic scheduling technology, applied in the direction of AC network circuits, AC networks with energy trade/energy transfer authority, single-network parallel feeding arrangements, etc.

An uncertain and economic scheduling technology, applied in the direction of AC network circuits, AC networks with energy trade/energy transfer authority, single-network parallel feeding arrangements, etc.

CN108539732AActive Publication Date: 2018-09-14SOUTHEAST UNIV
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  • Alternating current/direct current microgrid economical dispatching based on multi-interval nondeterminacy and robust optimization
  • Alternating current/direct current microgrid economical dispatching based on multi-interval nondeterminacy and robust optimization
  • Alternating current/direct current microgrid economical dispatching based on multi-interval nondeterminacy and robust optimization

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Embodiment Construction

[0055] The technical solutions of the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] like figure 1 As shown, in the embodiment of the method of the present invention, the topology of the AC / DC microgrid is as follows figure 2 shown. The method includes the following steps:

[0057] Step 10) Obtain the prediction parameters of uncertainty, and allocate the budget number of uncertain periods;

[0058] Step 20) constructing a multi-interval uncertainty set based on step 10);

[0059] Step 30) Obtain the operating cost coefficient and operating limit of each unit in the microgrid, and establish a robust economic dispatch model for the AC / DC microgrid based on step 20);

[0060] Step 40) Solving the robust economic scheduling problem: use the column constraint generation algorithm to iteratively solve the optimization problem, and obtain the robust operation plan of the AC / DC microgrid.

[0061] As ...

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Abstract

The present invention discloses an alternating current / direct current microgrid economical dispatching method based on multi-interval nondeterminacy and robust optimization. The method comprises the following steps of: the step 10) obtaining nondeterminacy prediction parameters, and distributing a nondeterminacy time period budget number; the step 20) based on the step 10), constructing a multi-interval nondeterminacy set; the step 30) obtaining an operation cost coefficient and an operation limiting value of each device in the microgrid, and based on the step 20), establishing a robust optimization economical dispatching model of an alternating current / direct current microgrid; and the step 40) solving a robust economical dispatching problem: employing a column constraint generating algorithm to perform iteration solution of the optimization problem, and obtaining the robust operation plan of the alternating current / direct current microgrid. The alternating current / direct current microgrid economical dispatching method can improve the economic benefit of microgrid operation and can improve the important reference for formulation of an operation plan of the alternating current / direct current microgrid.

Description

technical field [0001] The invention belongs to the technical field of energy management and economic dispatching of microgrids, and specifically relates to an economic dispatching method for AC / DC microgrids based on multi-interval uncertainty robust optimization. Background technique [0002] Traditional fossil energy-based power generation has brought great pollution to the natural environment. Therefore, more and more renewable clean energy is connected to the power system through microgrids, and the penetration rate of renewable energy in the grid is gradually increasing. However, the volatility and uncertainty of renewable energy are very strong. In order to ensure the stable and efficient operation of the microgrid, it is necessary to optimize the scheduling of the microgrid to formulate a reasonable operation plan and realize the integration of traditional units, renewable generators and energy storage equipment. Coordinated operation. [0003] There are uncertainti...

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Application Information

Patent Timeline
14 Sep 2018
Publication
CN108539732A
IPC
H02J3/00; H02J3/38; H02J3/46
CPC
H02J3/00; H02J3/008; H02J3/381; H02J3/46; H02J2203/20
Inventors
顾伟; 邱海峰