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Multi-microgrid elastic distributed voltage secondary controller and design method thereof

A multi-microgrid and distributed power supply technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as asynchrony, large deviation, and inaccurate nominal value of primary control voltage

Active Publication Date: 2021-03-30
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Purpose of the invention: The present invention aims to solve the above-mentioned deficiencies in the prior art, provide a multi-microgrid elastic distributed voltage secondary controller and its design method, and solve the primary control voltage standard when the link failure and the actuator failure in the distributed power supply. Problems of inaccurate weighing, large deviation and asynchrony

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  • Multi-microgrid elastic distributed voltage secondary controller and design method thereof
  • Multi-microgrid elastic distributed voltage secondary controller and design method thereof
  • Multi-microgrid elastic distributed voltage secondary controller and design method thereof

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Embodiment Construction

[0051] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0052] According to the present invention, a multi-microgrid flexible distributed voltage secondary controller, N distributed power sources are used as followers, and a given reference voltage is regarded as a leader, and the follower and the leader, as well as the follower and the follower They are connected through a directed graph G to form a system as a controlled object.

[0053] There is a communication link between the leader and at least one follower, there is a communication link between N followers, and at least one agent can reach any agent through a limited communication link, and the information interaction between followers Using a directed graph G=G(V,E), where V={1,...,N} is the node set of followers, is a set of communication links between followers, (j,i)∈E means that the i-th follower can directly obtain the information of...

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Abstract

The invention discloses a multi-microgrid elastic distributed voltage secondary controller and a design method thereof, a control object comprises a leader of a given reference voltage and followers of N distributed power supplies, and N is greater than or equal to 2; a communication link exists between the leader and at least one follower, and a communication link exists between N followers; thedistributed power supplies are connected with a local load, are controlled by respective elastic distributed voltage secondary controllers, and perform power transmission through a power grid; and theelastic distributed voltage secondary controller comprises a voltage derivative calculation unit, a link fault processor, an actuator fault processor and a primary control voltage nominal value calculation unit, and provides a primary control voltage nominal value. The stability of the multi-microgrid elastic distributed voltage secondary controller system is ensured; and the problems of nominalvoltage accuracy of primary control and synchronization of the distributed power supply when a communication link and an actuator fail are effectively solved.

Description

technical field [0001] The invention relates to the technical field of industrial process control, in particular to a multi-microgrid elastic distributed voltage secondary controller and a design method thereof. Background technique [0002] In practical applications, when performing voltage cooperative control on a microgrid with multiple distributed power sources, due to the complexity of the communication environment in which the microgrid is located, it is very likely that the communication link failure will occur; at the same time, due to the distributed Actuator failures can occur due to the lack of a centralized feedback mechanism in the traditional control structure and the long-term use of the control structure in the distributed power supply. [0003] When the communication link fails, each distributed power supply will not be able to obtain an accurate reference voltage value, resulting in different reference voltages for each distributed power supply, and it will...

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Application Information

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IPC IPC(8): H02J3/06H02J3/24
CPCH02J3/06H02J3/241
Inventor 杨杨李焱飞汪雪戈井志岳东张腾飞
Owner NANJING UNIV OF POSTS & TELECOMM
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