Abstract
The trip probability of transmission line under lightning stroke is rapidly increasing under complex weather conditions when large-scale renewable energy is intergrated with modern power grid. Line arrester plays a critical role in reducing lightning damage and economic losses, in which DC reference voltage is a critical parameter to evaluate line arresters. Hence, a set of on-site DC test system of transmission line arresters is developed to realize the DC reference voltage test in this article. The output DC voltage of the test system is continuously adjustable (0–200 kV), while its rated power and the maximum output current are set to 400 W and 2 mA, respectively. Furthermore, the system is powered by a lithium battery instead of a 220/380 V AC energy source. It employs split design and integrating assembly on-site that reduces the total weight by 36.7%, which considerably decreases the demand for the space of test site. Besides, the weights of control cabinet, multiplying cylinder, and energy source are reduced by 60, 54.55, and 33.33%, respectively. Meanwhile, the Bluetooth remote control module is used to effectively ensure the safety of test personnel. This system accomplishes DC reference voltage tests without removing line arresters on site, which can effectively enhance maintenance efficiency and economic benefits.
Highlights
With the development of technology and economy (Aberoumand et al, 2018; Lei et al, 2020; Tahir et al, 2021), energy demand has further expanded and the crisis of energy shortage has become more severe in recent years (Hori et al, 2020)
The advantages of MOA can be mainly summarized as: 1) fast response, flat volt-ampere characteristics, and high stablility; 2) large flow capacity, low residual pressure, long service life, and simple structure; 3) wide application in power transmission, transformation, and distribution systems; 4) compared with the traditional porcelain sheath arrester, the composite sheath has the advantages of small size, lightweight, solid structure, strong pollution resistance, good explosion-proof performance, and so on. Another overvoltage protection equipment called line arresters (Christodoulou et al, 2010; Sandrode et al, 2017) that are critical to reliable operation of power system line are mainly installed on transmission lines in mountainous areas, where the operating environment is so complex that some arrester faults or even explosions occur from time to time that poses serious risks to safety operation
The main contribution/novelty of this work can be summarized as follows: 1) Compared with traditional devices with the same parameters, the overall portability of the device is significantly improved, e.g., the total weight of this device is decreased by 36.7%; 2) This device is designed to be more suitable for on-site tests, in which multiplying cylinder and control cabinet can be transported separately and lithium battery is applied for power supply; 3) The safety is considerably enhanced during tests
Summary
With the development of technology and economy (Aberoumand et al, 2018; Lei et al, 2020; Tahir et al, 2021), energy demand has further expanded and the crisis of energy shortage has become more severe in recent years (Hori et al, 2020). The advantages of MOA can be mainly summarized as: 1) fast response, flat volt-ampere characteristics, and high stablility; 2) large flow capacity, low residual pressure, long service life, and simple structure; 3) wide application in power transmission, transformation, and distribution systems; 4) compared with the traditional porcelain sheath arrester, the composite sheath has the advantages of small size, lightweight, solid structure, strong pollution resistance, good explosion-proof performance, and so on Another overvoltage protection equipment called line arresters (Christodoulou et al, 2010; Sandrode et al, 2017) that are critical to reliable operation of power system line are mainly installed on transmission lines in mountainous areas, where the operating environment is so complex that some arrester faults or even explosions occur from time to time that poses serious risks to safety operation.
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