A distribution system optimization operation method considering distributed wind power high penetration grid connection

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

Active Publication Date: 2021-09-10
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.

Method used

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  • A distribution system optimization operation method considering distributed wind power high penetration grid connection
  • A distribution system optimization operation method considering distributed wind power high penetration grid connection
  • A distribution system optimization operation method considering distributed wind power high penetration grid connection

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Embodiment

[0140] Step 1. The IEEE33 node power distribution system connected to distributed wind power is used as a calculation example to carry out simulation analysis. The structure of the power distribution system is as follows: Figure 4 As shown in Table 1, 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 adjustable 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] The calculation example takes 24 hours as a scheduling period, and the load fluctuation curve with a unit period of 15 minutes and the active output curve of the 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 unqu...

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Abstract

A distribution system optimization operation method that considers the high penetration of distributed wind power grid-connected. In the case of wind farm output and load fluctuations, the reactive power adjustment capability of wind turbines is fully utilized to control the system node voltage at a safe and high-quality level. Within the scope, the phenomenon of wind turbine off-grid caused by voltage quality problems is solved; compared with the existing power distribution system optimization model that generally targets economy The goal is to ensure that the active power generated by the wind farm is fully connected to the grid for consumption, and to achieve a high degree of penetration and efficient utilization of wind power resources.

Description

technical field [0001] The invention belongs to the technical field of an operation control method for connecting distributed wind power to a distribution network, and in particular relates to an optimal operation method of a power distribution system considering high penetration of distributed wind power and grid connection. Background technique [0002] In recent years, the renewable energy power generation technology represented by wind power generation has become mature. The distributed connection of wind turbines to the distribution network can not only realize the full utilization of clean energy, but also improve the problem of low voltage at the load terminal in the traditional distribution network. Play a supporting role in the distribution network voltage. However, with the high penetration of wind power and grid connection, its impact on the local distribution network has become increasingly prominent, mainly in the overvoltage problem caused by grid connection. ...

Claims

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Application Information

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Patent Type & Authority Patents(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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