Recently, a tip from Taiwan Electric Power Company (hereinafter referred to as "Taiwan Electric Power") has become a hot topic of people's livelihood. It is suggested that during the Spring Festival holiday, the factory stops production and the company shuts off work, the power consumption is reduced, and the power flowing through the underground cable is greatly reduced. The cable generates a large amount of invalid power to be poured into the system, resulting in a voltage rise of more than 10%. Therefore, people are urged to unplug the plug when going out to avoid burning failure of electrical equipment at home. The Spring Festival comes every year. Why do you need to give a special prompt to "unplug" this year? Professionals and public opinion pointed out that the problem is that the proportion of unstable power such as wind and wind power in Taiwan's total power system has increased, making the voltage difficult to control. In recent years, the Taiwan authorities have vigorously developed renewable energy power generation. According to the Lianhe Daily, the wind power generation is booming in winter and the photovoltaic power generation efficiency is getting better, which makes the share of wind power in the total power system of the whole Taiwan during the Spring Festival this year likely to exceed 30%. Li Min, a distinguished professor of the Department of Engineering and Systems Science of Tsinghua University in Hsinchu, said that when the renewable energy generation capacity is too high, the dynamic balance of power generation and consumption will fluctuate, affecting the stability of the power grid. The voltage rise may not only lead to the burning of electrical appliances, but also cause the fire of electric wires, which becomes a public safety problem. According to the analysis of the column of "Wind Media", the authorities spared no effort to develop green power, but the energy storage facilities did not keep up with the surplus of renewable energy generation. The current law does not allow power companies to abandon renewable energy, so they can only let the voltage rise. "With insufficient supporting facilities, the offshore wind turbines of the Democratic Progressive Party are plugged one by one, and the photovoltaic panels are planted one by one, which not only damage the coast and fish farms, but also generate a lot of black gold interests colluded by officials and businessmen. After half a day's work, the power supply is still unstable." A person from the island's deep media said on social media that after a hard year's work, it is not easy to take a long holiday for the Spring Festival to go away, but also have to be worried about home appliances. Even the power supply is unstable. How can we have a good year? If voltage instability is a recent annoyance of the Taiwanese people, power failure is undoubtedly a heavy distress lingering in people's minds. From the "August 15 blackout" in 2017 to the two consecutive blackouts in May 2021, and then to the blackouts across Taiwan that affected more than 5 million households in March 2022, as well as the frequent blackouts without warning in July 2022, the power shortage has increasingly become a "curse" that plagues Taiwan's industrial development and affects people's lives. According to media reports in the island, Unit 2 of the Second Nuclear Power Plant will be shut down in mid-March. However, the gas unit of Unit 7 of Datan, which is used to make up for the annual repair, was delayed by the epidemic and could not be connected to the grid for test on time. Therefore, I'm afraid the power supply will be tight this spring. Although the person in charge of the economic department of the Taiwan authorities promised to "make efforts to dispatch", the people were still worried, for fear that the unbearable blackout would "come again several times". Even Taiwan Telecom said that it could only pray for the help of the God, "the weather should not be too hot". Taiwan's power supply system takes the reserve capacity (that is, the actual dispatchable generation capacity of the day minus the surplus after use) as the power surplus and deficit index. When the reserve capacity rate is lower than 6%, the orange light signal symbolizing "power supply warning" will be lit, and between 6% and 10%, the yellow light signal symbolizing "power supply is tight" will be lit. Wind Media quoted Taiwan's "Central University" as saying
Edit：He ChengXi Responsible editor：Tang WanQi
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