Meteorological Risk Analysis of Port Crane Operations and Warning Managements

Wang, Rui; Long, Qiang; Wang, Chang; Jiang, Linlin

doi:10.2991/rac-16.2016.66

Cited by 2 publications

(2 citation statements)

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“…According to the overhead transmission line outage record of the State Grid Company of China from 1999 to 2003 , transmission line outages were mainly triggered by temporary trips due to conductor galloping and lightning, while outages caused by conductor damage only accounted for less than 10% of all outages. However, most of the trips are temporary and can be restored within several minutes.…”

Section: Outage Rate Estimation Methods For Overhead Transmission Linementioning

confidence: 99%

Overhead transmission line outage rate estimation under wind storms

Liu

Lei

Hou

2018

IEEJ Transactions Elec Engng

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Wind storms such as hurricanes increase the outage rate of overhead transmission lines and hence can seriously affect the security of power systems. Therefore, it is very important to estimate the overhead transmission line outage rate for a power system that might be jeopardized by wind storms. In this paper, we propose a new method for estimating the outage rate of overhead transmission lines, with two primary advantages. First, the proposed method describes the relationship between the outage rate and the weather factors by a fragility curve customized for overhead transmission lines to ensure that the relationship is precisely represented. Second, the proposed method takes the conductor strength reduction and different physical properties of overhead transmission lines into consideration to increase outage rate estimation accuracy. We test the proposed method by estimating the outage rate of overhead transmission lines in a regional power system based on both historical and simulated wind storms. The test results show that the proposed method generates a more accurate estimation than the conventional approaches. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Outage Rate Estimation Methods For Overhead Transmission Linementioning

confidence: 99%

Overhead transmission line outage rate estimation under wind storms

Liu

Lei

Hou

2018

IEEJ Transactions Elec Engng

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“…The Chongqing University team performed the fitting of the fault downtime time by analyzing the historical data from the fault trip to the success of power transmission again. It used the traditional function to obtain the distribution model of the fault shutdown time [14]. Still, the comparison of the maximum likelihood estimate by the traditional function cannot intuitively indicate the advantages and disadvantages of the model.…”

Section: Introductionmentioning

confidence: 99%

Study on forecasting model of transmission line failure rate and outage time

Liu,

Zhang,

Zheng

2023

J. Phys.: Conf. Ser.

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Given the complex problem of transmission line failure and outage and the difficulty of predicting the failure rate and outage time of the transmission line with certainty, the accident prediction information is provided for power grid managers. This paper proposes a three-order fundamental Fourier function fault rate prediction model based on a monthly time scale. This method does not rely on any strict assumptions and is driven by the real transmission line fault data in a province. The fitting results reflect the monthly bimodal fault characteristic distribution law of the transmission line fault rate. On this basis, the historical outage time is analyzed and counted, the probability density distribution characteristics of forced outage time are proposed, and the ExpGro function is used to fit it. The results show that the prediction results of the model proposed in this paper have good sharpness and reliability, which has a guiding significance for actual maintenance work.

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Meteorological Risk Analysis of Port Crane Operations and Warning Managements

Cited by 2 publications

References 0 publications

Overhead transmission line outage rate estimation under wind storms

Overhead transmission line outage rate estimation under wind storms

Study on forecasting model of transmission line failure rate and outage time

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