IEEE Electrification - September 2019 - 23

By Mingyu Yan, Mohammad Shahidehpour,
Jiazheng Lu, and Xunjian Xu

©ISTOCKPHOTO.COM/DOVATE

Coordinating
Electricity and
Transportation
Networks
Enhancing power grid resilience strategies against ice storms.
CE STORMS HAVE SERIOUSLY THREATENED
power network security over the last
decades. In 1998, an ice storm that struck
North America damaged more than 1,000
transmission towers. In 2008, a severe ice
storm struck South China, destroying thousands of transmission lines and towers, resulting in more than US$50
billion in economic loss. During this storm, the Chenzhou
power network in the Hunan province suffered an outage,
and the city experienced a weeklong power blackout. Figures 1 and 2 depict samples of damaged transmission
lines and towers brought down by unbalanced tensions
caused by ice-covered lines. Table 1 summarizes the corresponding damages to the transmission infrastructure,
showing that more than 800 towers and 400 lines (i.e., in

I

Digital Object Identifier 10.1109/MELE.2019.2925755
Date of publication: 4 September 2019

2325-5987/19©2019IEEE

excess of 220 kV) were impaired. Moreover, the extent of
ice storm damage in the distribution network included
more than 60,000 towers and 47,000 lines.
This article introduces resilience strategies against
ice storms by which the de-icing of ice-covered equipment can be used to maintain infrastructure security.
Figure 3 depicts the outline of the proposed resilience
enhancement strategy proposed by the State Grid
Hunan Electric Power Company and applied to Hunan,
China. The forecast and monitoring method can predict
an ice storm by providing long-term, midterm, and
short-term ice storm forecasts and real-time ice thickness monitoring. The proposed de-icing techniques
noted in Figure 3 provide operations for ice-covered
power networks by utilizing fixed and mobile de-icing
devices (MDIDs) for transmission and distribution lines,
respectively. In Figure 3, we also apply the emergency
preparedness and operation method by coordinating
IEEE Electrific ation Magazine / S EP T EM BE R 2 0 1 9

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IEEE Electrification - September 2019

Table of Contents for the Digital Edition of IEEE Electrification - September 2019

Contents
IEEE Electrification - September 2019 - Cover1
IEEE Electrification - September 2019 - Cover2
IEEE Electrification - September 2019 - Contents
IEEE Electrification - September 2019 - 2
IEEE Electrification - September 2019 - 3
IEEE Electrification - September 2019 - 4
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IEEE Electrification - September 2019 - Cover3
IEEE Electrification - September 2019 - Cover4
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