Power distribution network reliability evaluation method considering opportunity maintenance strategy
A technology of evaluation methods and maintenance strategies, applied in the fields of instruments, data processing applications, information technology support systems, etc., can solve problems such as preventive maintenance, opportunistic maintenance, and unreasonable reliability indicators that cannot be considered
Inactive Publication Date: 2015-07-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Most of these methods only consider the impact of component failure on the power outage at the load point, and cannot consider factors such as preventive maintenance and opportunistic maintenance.
Therefore, for the distribution network with opportunistic maintenance strategy, the reliability index calculated by the previous reliability evaluation method is unreasonable
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[0078] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:
[0079] Taking the IEEE RBTS BUS6 system as an example for analysis, the system wiring diagram is as follows image 3 As shown, it includes one 10 kV busbar and four feeder outlets (F1, F2, F3, F4). Feeders F1 and F2 communicate with each other. There are 64 feeder sections, 38 distribution transformers and 40 load points in the system. The reliability of the IEEE RBTS BUS6 system is calculated by using the method proposed by the invention, and the effectiveness of the invention is verified by analyzing the calculation results.
[0080] First, determine the reliability model of each component, including feeder section, distribution transformer and switchgear. Select appropriate shape parameters according to the characteristics of various components, obtain their characteristic life parameters according to the statistical failure rate of each component, and c...
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The invention discloses a power distribution network reliability evaluation method considering an opportunity maintenance strategy. The power distribution network reliability evaluation method includes the steps of 1, subjecting fault rates and reliability of power distribution network elements to modeling; 2, analyzing all maintenance modes of a power distribution network, recording blackout influence of each maintenance mode on each load point, and forming a report; 3, setting initial simulation data; 4, generating N uniformly-distributed random numbers within an interval (0, 1), and acquiring N non-fault operation times according to a fault parameter lambda in each element state model; 5, seeking the minimal non-fault operation time; 6, calculating reliability R(tR) of each element at a moment t; 7; if t<TTFi and R(tR)>Rp, executing a step 8, and if t> / =TTFi or Rj(tRj)< / =Rp, subjecting an element i to fault maintenance or subjecting an element j to preventive maintenance; 8, subjecting the simulation step to addition by 1, namely K=k+1, and if K<Kmax, and a reliability clock tR=tR+H, returning back to the step 4 for continuous simulation; if K> / =Kmax, executing a step 9; 9, ending a simulating process and calculating a reliability index of the power distribution network according to formula (4) to formula (11). The power distribution network reliability evaluation method considering the opportunity maintenance strategy has the advantage that influence of the opportunity maintenance strategy on the reliability of the power distribution network can be evaluated precisely.
Description
technical field [0001] The invention relates to a power supply reliability meter evaluation method of a distribution network considering an opportunity maintenance strategy. Background technique [0002] The power distribution system is an important part of the power system to supply and distribute electric energy to users. With the improvement of users' requirements for power supply quality, people pay more and more attention to the reliability of power distribution system. Arranging the maintenance plan reasonably can not only reduce the maintenance cost, but also greatly improve the power supply reliability of the distribution network. At present, the maintenance theory of distribution network has been developed rapidly. In addition to traditional fault maintenance and regular maintenance, there are optimization maintenance and condition maintenance. [0003] However, the research on distribution network reliability calculation methods is relatively lagging behind, and t...
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IPC IPC(8): G06Q50/06
CPCY04S10/50
Inventor 王颖王涛袁建普康伟任志刚张章张倩茅习朋荆志朋张丽洁邵华孙轶良林榕樊会丛申永鹏赵建华高立坡朱士加孟繁华彭冲
Owner STATE GRID CORP OF CHINA
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