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AGC power dynamic distribution method based on virtual generation tribe

A technology of virtual power generation and dynamic distribution, which is applied to AC networks, electrical components, circuit devices, etc. of the same frequency with different sources, which can solve the problems of time-consuming and time-scale AGC power distribution that cannot be applied.

Active Publication Date: 2016-10-12
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, QD learning, like traditional machine learning algorithms, does not use past learning experience and results when learning new tasks, making the algorithm spend a lot of time every time it explores and learns new optimization tasks, which cannot be applied AGC power allocation to ultra-short-term control timescales

Method used

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  • AGC power dynamic distribution method based on virtual generation tribe
  • AGC power dynamic distribution method based on virtual generation tribe
  • AGC power dynamic distribution method based on virtual generation tribe

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Embodiment

[0085] In this embodiment, based on the load frequency control model of the Guangdong power grid, the 93 units participating in AGC frequency regulation are divided into 6 VGTs, and the communication network topology of the VGTs is as follows figure 2 As shown, the relevant parameters of the 93 units can be found in Table 1. In the calculation example, the weight of the connection with information exchange is a ij Set to 1. In this embodiment, the AGC power dynamic allocation method for virtual power generation tribes based on cooperative consistency transfer Q-learning in the model includes the following steps ( figure 2 ):

[0086] (1) Based on the load frequency control model of Guangdong power grid, according to the geographical distribution of Guangdong, and taking the high-voltage tie line in the regional power grid as the boundary of the territorial power grid, the 93 units participating in AGC frequency regulation are divided into 6 VGTs, and the VGT-based AGC power...

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Abstract

The invention discloses an AGC power dynamic distribution method based on a virtual generation tribe. According to the AGC power dynamic distribution method based on the virtual generation tribe, an automatic generation control (AGC) power distribution framework based on the virtual generation tribe (VGT) is firstly established, and a state discrete set and a motion discrete set are determined; a total real-time power grid generation power instruction of a present control period area is acquired, a value function matrix and selection motion of each virtual generation tribe are initialized by utilizing migration learning; motion selection is carried out according to leader strategy, and a tribe power is calculated; an instant reward function value of each virtual generation tribe is acquired; consistency weight, self-learning weight and a value function matrix of each virtual generation tribe in the present state are updated; whether an algorithm satisfies a convergence condition is determined. Through the method, under the AGC power distribution framework based on the VGT, in combination with QD learning and migration learning, AGC control time requirements can be satisfied, and the method is more suitable for solving an AGC dynamic power distribution problem of a large-scale complex power grid having properties of relatively strong randomness and nondeterminacy.

Description

technical field [0001] The invention relates to the technical field of automatic power generation control of electric power systems, in particular to a method for dynamic distribution of AGC power in virtual power generation tribes based on cooperative consistency transfer Q-learning, which is suitable for random optimization and dynamic distribution of power in AGC decentralized control systems of interconnected power grids. Background technique [0002] AGC (Automatic Generation Control, automatic generation control), as one of the important links of EMS (Energy Management System, energy management system), ensures that the frequency of the interconnected grid and the exchange power of the tie line are kept at the rated value. Generally speaking, AGC is mainly divided into two processes: 1) Tracking of the total power command. The actual power grid dispatching center mainly uses a PI controller, and some scholars have proposed intelligent control methods such as fuzzy contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/04H02J3/46
CPCH02J3/00H02J3/04H02J3/46H02J2203/20
Inventor 张孝顺李清徐豪余涛
Owner SOUTH CHINA UNIV OF TECH
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