Same-tower multi-circuit power transmission line fault probability and reliability calculation method
A technology of transmission lines and multiple circuits on the same tower, which is applied in computing, instruments, data processing applications, etc., to achieve the effect of clear logic and reliable principle
Pending Publication Date: 2021-04-27
ZHUMADIAN POWER SUPPLY ELECTRIC POWER OFHENAN
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[0003] With the rapid development of the economy, the scale of the power grid continues to expand. In economically developed and densely populated areas, the resources of transmission line corridors are becoming more and more scarce. It is imperative to adopt the parallel erection technology of multi-circuit transmission lines on the same tower and intensively use land resources. However, when the multi-circuit transmission lines erected on the same tower are affected by natural disasters (such as typhoon, lightning, freezing, etc.) that exceed the design conditions, the scope and degree of influence on the stability of the power grid will be greater. Calculate the failure probability and reliability of tower multi-circuit transmission lines to ensure the safe and reliable operation of multi-circuit transmission lines
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[0052] The present invention will be further described below in conjunction with the accompanying drawings.
[0053] Such as Figure 1-2 As shown, a method for calculating the failure probability and reliability of multi-circuit transmission lines on the same tower includes the following steps:
[0054] Step 1, calculate the failure probability of the same-tower multi-circuit transmission line with the statistical analysis method;
[0055] The forced failure of repairable components is represented by the steady-state cycle of "run-stop-run", and the failure rate λ, repair rate μ, and fault frequency f are calculated according to the following formula:
[0056]
[0057] Among them, d is the running time, r is the downtime;
[0058] Calculate the average failure rate λ and failure probability p of the multi-circuit transmission line on the same tower in the time interval according to the following formula:
[0059]
[0060] Calculate the failure rate of multi-circuit tr...
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The invention belongs to the technical field of power transmission line fault calculation, and particularly relates to a same-tower multi-circuit power transmission line fault probability and reliability calculation method. The method comprises the following steps: calculating the fault probability of the same-tower multi-circuit power transmission line by a statistical analysis method; simulating the state of the same-tower multi-circuit power transmission line by a Monte Carlo method; calculating an operation reliability index of the same-tower multi-circuit power transmission line; according to the method, firstly, the fault probabilities of various natural disasters are counted and analyzed, then the line state is simulated based on the Monte Carlo method, finally, the line reliability indexes are calculated, and the reliability indexes comprise the loss-of-load probability (LOLP), the power shortage expected value (EDNS) and the power shortage expected value (EENS). The method is easy to understand and simple in calculation, and the result can provide a basis for reliability evaluation of multi-circuit transmission lines on the same tower.
Description
technical field [0001] The invention belongs to the technical field of transmission line fault calculation, and in particular relates to a method for calculating the failure probability and reliability of multi-circuit transmission lines on the same tower. Background technique [0002] Similar statistical data from the China Electric Power Reliability Management Center show that natural disasters and meteorological factors are the main reasons for the unplanned outage of overhead transmission lines in China's power grid; From 2009 to 2013, there were as many as 28 power grid failure events caused by meteorological reasons in the world, which affected more than 100,000 people, accounting for 56% of the total power grid large-scale power outage accidents. [0003] With the rapid development of the economy, the scale of the power grid continues to expand. In economically developed and densely populated areas, the resources of transmission line corridors are becoming more and mo...
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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q10/067G06Q50/06
Inventor 王瑞琦李明明李卫军罗碧华张翼李威万涛秦琦宋仁杰赵毅宋志勇闫娇郭鹏李鹏李春晖刘权威吴勇邹雪梅王婷婷李翔赵威牛新萍刘路吴文韬杜予贺赵航陈钊王志刚魏家鹏张豪杨巍马广原白果方新利喻鹏李鹏辉齐波禹昌锋李蕴静张昀沈雷候伟高小芳高慧乔鸣鸣刘喜王冰王方樊晓曦薛洁王曼刘慧迪王晓宁郑舒文马锴付刚陈方吴杰黄鹤李靖黄鹂郭帅文张一杰程璞常一帆蔡文琦刘洋孙凌涛张豪壮孙阳光
Owner ZHUMADIAN POWER SUPPLY ELECTRIC POWER OFHENAN