Large-scale energy storage optimization configuration and coordination control method in independent mircogrid

A technology of optimized configuration and coordinated control, applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc., to achieve the effect of ensuring buffer capacity

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A technology of optimized configuration and coordinated control, applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc., to achieve the effect of ensuring buffer capacity

CN107370171AActive Publication Date: 2017-11-21BEIJING SOARING ELECTRIC TECH CO LTD

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[0049] Such as Figure 1 to Figure 5 As shown, a large-scale energy storage optimal configuration and coordinated control method in an independent microgrid described in this embodiment includes the following steps:

[0050] Step 1: Determine the capacity ratio of the energy storage unit;

[0051] Step 2: Design the maximum charge and discharge rate constraint function of the energy storage battery;

[0052] Step 3: Determine the constraints on the regulation ability of the main regulation unit;

[0053] Step 4: Energy storage unit power scheduling.

[0054] Specifically, the capacity allocation ratio of the energy storage unit in step 1 of this embodiment is the capacity allocation ratio of the master energy storage unit and the capacity allocation ratio of the slave energy storage unit.

[0055] The specific process of the capacity ratio of the main energy storage unit in this embodiment is:

[0056] Step 1-1-1: Calculate the maximum power change of the grid at a certain...

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Abstract

The invention discloses a large-scale energy storage optimization configuration and coordination control method in an independent mircogrid. The method comprises the steps of 1, determining a capacitor ratio of an energy storage unit; 2, designing a maximum charging / discharging speed constraint function of an energy storage battery; 3, determining a master control unit adjustment capacity constraint condition; and 4, scheduling power of the energy storage unit. According to the method provided by the invention, service life of the battery can be prolonged, safe and reliable operation of the energy storage system can be ensured, and meanwhile, continuous buffering capacity of a buffering pool of the master control unit is ensured.

Description

technical field [0001] The invention belongs to the field of new energy microgrids, in particular to a large-scale energy storage optimization configuration and coordinated control method in an independent microgrid. Background technique [0002] In remote areas such as islands and plateaus, small independent power systems composed of small hydropower or diesel generators are often used to supply power to residents. However, small hydropower is limited by geographical conditions and seasons, and the fuel and transportation costs for diesel power generation are expensive. And it will cause serious pollution to the environment. In recent years, the use of energy storage systems and renewable energy power generation to supply power to remote areas and islands has developed rapidly. However, the investment cost of energy storage systems occupies a considerable proportion in independent microgrids, and economically feasible large-scale energy storage is still It is a technical d...

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Application Information

Patent Timeline

21 Nov 2017

Publication

CN107370171A

IPC: H02J3/32; H02J3/28

CPC: H02J3/28; H02J3/32; H02J2203/20

Inventors: 王仕城; 伍春生