An optimal operation method of distribution system considering distributed wind power high-permeability grid connection

A power distribution system, optimized operation technology, applied in wind power generation, single grid parallel feeding arrangement, electrical components, etc.

Active Publication Date: 2018-12-18
XIAN UNIV OF TECH
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Problems solved by technology

[0005] In summary, fruitful results have been achieved in the research on the optimal operation of distributed wind power access distribution systems, but the main optimization goals of these results focus more on regulating the system voltage, and how to reduce the impact of wind power output uncertainty on the system voltage At the same time, the method of increasing the penetration rate of wind power still needs to be further studied and solved.

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  • An optimal operation method of distribution system considering distributed wind power high-permeability grid connection
  • An optimal operation method of distribution system considering distributed wind power high-permeability grid connection
  • An optimal operation method of distribution system considering distributed wind power high-permeability grid connection

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Embodiment

[0140] Step 1. Take the IEEE33-node power distribution system with distributed wind power as an example for simulation analysis. The structure of the power distribution system is as follows Figure 4 As shown, the parameter configuration of each connected wind farm is shown in Table 1.

[0141] Among them, the reactive power adjustment range in Table 1 is limited by the theoretical adjustment range of the installed capacity of the wind turbine, and its range mainly depends on the actual operation of the wind farm. Figure 5 Factors such as the fan power capacity curve and power factor limitations shown.

[0142] In this calculation example, a dispatch period of 24 hours is used, and the load fluctuation curve with a unit phase duration of 15 minutes and the active output curve of a distributed wind farm are shown in Figure 6.

[0143] Table 1 Parameter configuration of distributed wind farm

[0144]

[0145] Step 2. In order to prevent the occurrence of unqualified voltage caused by fa...

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Abstract

The invention relates to a distribution system optimization operation method considering distributed wind power high-permeability grid connection. Under the condition of wind farm output and load fluctuation, the reactive power regulation capability of a wind turbine generator system is fully utilized, the system node voltage is controlled in a safe and high-quality range, and the phenomenon of fan disconnection caused by voltage quality problem is solved. Compared with an existing distribution system optimization model which generally takes economy as the objective, the wind power high-permeability grid-connected dissipation is taken as the optimization objective instead of the system operation economy objective, thereby ensuring that the active power emitted by the wind farm realizes full grid-connected dissipation as far as possible, and realizing the high permeability and efficient utilization of wind power resources.

Description

Technical field [0001] The invention belongs to the technical field of operation control methods for distributed wind power access to a distribution network, and specifically relates to an optimized operation method of a distribution system considering the high penetration of distributed wind power grid connection. Background technique [0002] In recent years, the renewable energy power generation technology represented by wind power generation has become mature. The distributed access of wind turbines to the distribution network can not only realize the full use of clean energy, but also improve the low voltage problem of load terminals in the traditional distribution network. Support the voltage of the distribution network. However, with the high penetration of wind power grid connection, its impact on the local distribution network has become increasingly prominent, mainly manifested in the overvoltage problem caused by grid connection. Therefore, it is of great significance...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46
CPCH02J3/386H02J3/46H02J2203/20Y02E10/76
Inventor 段建东王静陈鲁鹏孙茜
Owner XIAN UNIV OF TECH
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