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A distribution network reliability assessment method considering the access of electric vehicles

An electric vehicle and reliability technology, applied in computing, electrical components, circuit devices, etc., can solve the problems affecting the improvement of electric vehicles on the reliability of the distribution network, etc.

Active Publication Date: 2017-11-17
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

However, the impact of random faults in the distribution network on the charging and discharging of electric vehicles has not been taken into account. Failures in the distribution network will interrupt the charging of electric vehicles, which will indirectly affect the improvement of the reliability of the distribution network by electric vehicles.

Method used

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  • A distribution network reliability assessment method considering the access of electric vehicles
  • A distribution network reliability assessment method considering the access of electric vehicles
  • A distribution network reliability assessment method considering the access of electric vehicles

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Embodiment Construction

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] In this embodiment, R is used to represent the living area, that is, the charging area, and C is used to represent the office area, that is, the discharging area.

[0065] like figure 1 and figure 2 As shown, step a: establish the reliability model of distribution network components.

[0066] Repairable forced failures can be simulated by a steady-state "run-stop-run" cycle. The following formula is used to establish the reliability model of distribution network components:

[0067]

[0068] In formula (1), U is the average unavailability rate, λ is the failure rate (times / year); μ is the repair rate (repair times / year); MTTR is the average repair time (h); MTTF is the average failure-free continuous operation Time (h); f is the average failure frequency (times / year), MTTF+MTTR is an average period of the state of the com...

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Abstract

The invention discloses a distribution network reliability evaluation method considering electric vehicle access, comprising the following steps: establishing a distribution network component reliability model; defining an electric vehicle charging reliability index considering the influence of distribution network failure; The time-series Monte Carlo simulation method based on Latin hypercube sampling is used to process the data and evaluate the reliability of the distribution network that takes into account the access of electric vehicles. Significant effect: the present invention takes into account the interaction between the electric vehicle as an energy storage device and the reliability of the isolated distribution network. The configuration of other power sources in the power grid, thereby improving the reliability of the distribution network.

Description

technical field [0001] The invention belongs to the field of electric power distribution network, and in particular relates to a distribution network reliability evaluation method taking into account the access of electric vehicles. Background technique [0002] With the rapid development of smart grid and V2G technology, when the distribution network fails to form an island area, a large number of electric vehicle batteries can be used as mobile distributed power sources to supply power to the island area, improve the reliability of the distribution network, and reduce large-scale electric vehicle batteries. Adverse effects of car access. [0003] At present, the research on the reliability of electric vehicles connected to the distribution network seldom considers the impact of distribution network faults on the interruption of electric vehicle charging. The article "Reliability / cost evaluation with PEV and wind generation system" in the journal "IEEE Transactions on Sust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
Inventor 谢开贵胡博陈娅冯思王曼
Owner CHONGQING UNIV
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