A Cooperative Control Method Applicable to Microgrid with Multi-subnetwork Structure
A collaborative control and microgrid technology, applied in the field of microgrid systems, can solve problems such as power quality differences, achieve the effect of solving power stability problems, and promoting application and promotion
Inactive Publication Date: 2018-04-06
GUANGDONG UNIV OF TECH
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However, this mechanism cannot take into account the status of other subnets in the entire microgrid, which will lead to two-way random flow of active and reactive power flows in the microgrid system, resulting in large differences in the power quality of each subnet connected to the microgrid.
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[0017] The invention provides a cooperative control method applicable to a multi-subnet structure microgrid, which utilizes the stability margin of each subnetwork operation and the possibility of complementary operation of each subnetwork to realize the coordinated control of the microgrid to meet the stability of the microgrid Operational requirements, to achieve large-scale and efficient utilization of microgrids.
[0018] In order to make the object, technical scheme and effect of the present invention clearer and clearer, refer to the attached figure 1 The typical structures shown further illustrate the invention. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] On the basis of the micro power generation capacity prediction, system load prediction, energy storage device charge state monitoring and micro grid power quality monitoring in the sub-network, through...
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The invention discloses a cooperative control method suitable for a multi-subnet structure micro-grid. The micro-grid is composed of a plurality of backbone subnets and common subnets, and the subnets comprise and are not limited by loads, renewable energy source power sources, energy storage devices, reactive compensation devices and the like. All the subnets are decided to be the backbone subnets or the common subnets in a self-adaptive mode according to the power generation, energy consumption and energy storage states of the subnets, the maximum output capacity of the subnets and the states of the adjacent subnets on the premise of not damaging the power supply continuity and reliability of the micro-grid, and therefore the subnets of the micro-grid can be utilized efficiently, the requirement for the stable operation of the micro-grid can be met, and the large-scale efficient utilization of the micro-grid is achieved.
Description
technical field [0001] The invention relates to a microgrid system, in particular to the planning of the classification, withdrawal and promotion mechanism of subnetworks in a microgrid composed of multiple subnetworks. Background technique [0002] At this stage, the randomness and intermittent nature of renewable energy make the microgrid subnet composed of renewable energy always in a fluctuating state, which brings a heavy burden to the public power grid and also brings great challenges to the dispatching of the microgrid by the public power grid. great uncertainty. [0003] Different from the public power grid, in the microgrid, the micropower source is generally adjacent to the load, which allows the microgrid subnetwork to independently connect or exit the system according to changes in the environment and its own conditions, and in accordance with the requirements of power supply continuity. However, this mechanism cannot take into account the status of other subnet...
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IPC IPC(8): H02J3/06
CPCY02P80/14
Inventor 张淼章云陈思哲唐雄民
Owner GUANGDONG UNIV OF TECH