Distributed power supply optimal configuration method considering active management mode

Abstract

The invention discloses a distributed power supply optimal configuration method considering an active management mode. The method comprises the following steps: (1) carrying out uncertainty modeling on a wind driven generator, a photovoltaic generator and a micro gas turbine; (2) converting into a double-layer planning model according to a coordinated decomposition thought, planning an upper layeras a distribution planning problem of DG, taking minimum annual comprehensive cost as a target, taking a lower layer planning model as an optimization problem of DG active power output, and taking minimum active power output removal amount of DG as a target; (3) solving the model by using a method of combining a quantum evolutionary algorithm and a primal-dual interior point method, and samplingthe wind speed, the illumination intensity and the load by using a Monte Carlo simulation method based on Latin hypercube sampling, so that the method better reflects the characteristics of the powerdistribution network accessed by large-scale DG in the future, conforms to the development trend of the power grid in the future; after the active management mode is used, the DG of the type is bettercontrolled, the admitting ability of the system to renewable energy sources is improved, and the development of renewable energy source power generation is promoted.

Description

technical field [0001] The invention belongs to the technical field of active power distribution network, and in particular relates to a distributed power supply optimization configuration method considering an active management mode. Background technique [0002] With the rapid development of distributed generation technology, the gradual integration of DG into the distribution network has had a lot of impact on the power system, such as the improvement of the power flow distribution of the system and the improvement of system reliability. However, under the current management system, most After some DGs are connected to the distribution network, they follow the principle of "install and forget". The uncertainty brought about by the connection of DG will affect the safe and stable operation of the system, increase the economic cost of the power grid, and become a kind of "garbage power source" in the power system. Therefore, the power supply company has to strictly control ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of distributed generation technology, the gradual integration of DG into the distribution network has had a lot of impact on the power system, such as the improvement of the power flow distribution of the system and the improvement of system reliability. However, under the current management system, most After some DGs are connected to the distribution network, they follow the principle of "install and forget". The uncertainty brought about by the connection of DG will affect the safe and stable operation of the system, increase the economic cost of the power grid, and become a kind of "garbage power source" in the power system. Therefore, the power supply company has to strictly control the DG connection capacity and limit the DG The amount of power generated, the first consideration is to cut off the DG in case of failure, which hinders the development and promotion of DG

[0003] In response to this passive management mode, many scholars have proposed the concept of active management (Active Management, AM). Active management is to measure and evaluate the system operation data of the distribution network in more detail, and then perform real-time monitoring of DG and distribution network equipment. Control and take certain measures to coordinate. The distribution network under the active management mode can adopt a variety of control and management methods. According to the actual operation and planning needs of the system, actively control the DG output, switching reactive power compensation capacity, etc., so that The distribution system containing DG achieves the optimal operation state, while the active distribution network combines the active management mode with the planning, control and operation of the distribution network to actively control the DG, so as to increase the access of DG Capacity, play an important role of DG in improving system power supply reliability and power quality. In most cases, the original distribution network planning method treats DG output as a load and does not consider the initiative of DG control. This is actually It is a passive distribution network planning method, which is no longer suitable for the distribution network planning requirements of large-scale DG access in the future, so it is necessary to consider the active control and management of DG in the planning stage, and study the active distribution network planning method under the new situation , to reflect the impact of AM on the distribution network

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