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Method of controlling power distribution system including microgrid

A microgrid controller and controller technology, applied in the field of power systems, can solve problems such as the influence of the microgrid

Pending Publication Date: 2021-09-28
ABB (SCHWEIZ) AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

VPP operation is intended to support the distribution grid by implementing microgrid setpoints at the PCC, and this operation helps to provide optimization functions for the distribution network upstream of the PCC, but may have negative impacts on the microgrid

Method used

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  • Method of controlling power distribution system including microgrid
  • Method of controlling power distribution system including microgrid
  • Method of controlling power distribution system including microgrid

Examples

Experimental program
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Embodiment Construction

[0052] figure 1 A power distribution network 1 is shown consisting of two parts, namely a first part 1a connected to the transmission grid via a transformer 10 and a second part 1b which is a microgrid which is at the PCC (Point of Common Coupling) connected to the first part. The distribution network 1 comprises a plurality of assets 3 - 7 such as loads 3 , voltage source converters 4 , distributed generators 5 , series capacitors 6 and energy storage devices 7 . Energy storage devices 7 and distributed generators 5 may be connected to the distribution network grid 1 voltage source converter 4 . Assets 3-7 are provided in the first part 1a as well as in the microgrid 1b. The first part 1a comprises a distribution network controller 9 operatively connected to assets 3-7 of the first part 1a and arranged to monitor the first part 1a of the distribution network 1, including monitoring PCCs. The microgrid 1b includes a microgrid controller 8 arranged to monitor the microgrid 1...

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Abstract

Method (300) of controlling a distribution network (1) and a microgrid controller (8) adapted for the method. The distribution network (1) comprises assets (3-7) in a first part (1a) and a second part (1b) which parts (1a, 1b) are selectively connected to each other into an interconnected state at a connection point (PCC). The method comprises the step of monitoring (301, 306) and controlling (310) the assets (3-7) of the distribution network (1). In a first control mode (310A), the first part (1a) is controlled by a distribution network controller (9) and the second part is controlled by the microgrid controller (8). Especially, the method includes selecting (303) between controlling (310) the distribution network (1) in the interconnected state in accordance with the first control mode (310A), and controlling (310) the distribution network (1) in the interconnected state in accordance with a second control mode (310B), in which second control mode (310B) the assets (3-7) of the both the first part (1a) and the second part (1b) are controlled by the distribution network controller (9).

Description

technical field [0001] The present invention relates to power systems, and more particularly to the control of power distribution systems including microgrids. According to one aspect of the present invention, a microgrid controller is provided. Background technique [0002] A typical power system includes generators at a power plant that produce electrical energy. The power system also includes a transmission system having a transmission line at a high voltage such as 140 kV or higher for transmitting generated power to a distribution side of the power system for power consumption. The transmission system will typically include high voltage lines and the power is converted down for use in a power distribution system using medium voltage (above 1 kV and below 100 kV, eg between 15 kV and 45 kV). Thus, an electrical distribution system may begin with a transformer at a substation and include distribution lines in a grid or network for transmitting electricity at medium and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J13/00
CPCH02J3/06H02J13/00006H02J2310/10H02J13/00002Y02E60/00Y04S40/12Y02P80/14H02J3/388
Inventor R·玛朱姆德
Owner ABB (SCHWEIZ) AG