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“Power system safety is related to thousands of companies and international actors, and is the main component of National Ping An. To achieve the goal of ‘dual carbon’, it is necessary to build a new power system. The new power system has new technical characteristics and faces new development opportunities and challenges.” Shu Yinbiao, an academician of the Chinese Academy of Engineering, recently pointed out at the Beijing Forum·Motility Score forum and the Third Beijing Power Forum with the theme of “New Form Deploying Power Transformation Thoughts – Motility Safety” hosted by the Beijing Institute of Dynamics.
Power is closely related to people’s food, clothing, housing, transportation and production career. As the main material foundation of economic social development, power has become a resource element that people cannot leave for a moment. The power system is the main basic facility of modern society. The most basic task of the power system is Sugar baby to ensure “safe, economic, high quality, clean and efficient” power supply.
Shu Yinbiao pointed out that now…, the goal of “dual carbon” is achieved, and a large scale development of new forces is needed and a new power system with a progressive proportion of new forces is needed. The “double-high” characteristics of the new power system (high proportion new power, high proportion electric electronic equipment) brings new safety challenges.
Source: Telecom New Media Author: Zhao Ziyuan This article was first published in Telecom New Media. The author is a reporter of “China Power Enterprise Governance”. The power system safety related to the power safety, economic safety and national safety
The power system greatly eliminates human time and space on the production and application of Sugar baby‘s power system. In order to apply power more extensive and more conveniently, the power system is becoming more and more massive and its structure is becoming more complex. Some large-scale power systems have been built in the world, such as North American integrated power systems, European power systems, Indian power systems, etc. my country’s power systems are the world’s largest and most complex power systems with technology.
Shu Yinbiao pointed out that the power system has three significant technical characteristics. First, the speed of light propagation. The electromagnetic power is transmitted at the speed of light, and some problems that occur will instantly dissipate, involving the entire system. The second is actual balance. The power cannot be stored at a large scale, and the power generation, transmission and use must be completed at the same time. The third is to control the remnant. The power system has a single type of equipment, with a large number of status variables and controls. The five regular guests include various artists: host, comedy actor, actor, etc. Number is a classical repetitive and huge system, and the control is very difficult.
Because the stable operation status of the power system is damaged,There have been many major changes in the world in the face of electricity shutdowns, which have led to a grand severance in the United States and Canada, “8.14”, Europe, and India’s “7.30” and “7.31” and so on. “After many years of practical implementation, our country has built a safe and stable control system, and has endured a long-term test. Our power system has not experienced any major power system for more than 30 years. It has maintained a world record of safe and stable operation of a special power system. href=”https://philippines-sugar.net/”>Pinay escort.” Shu Yinbiao said.
Shu Yinbiao said that in addition to the stable and disruptive changes in the traditional power system, there is also a long and short-term traditional peace change, showing a variety of frequency development and the same needs are highly valued. “Including extreme weather, natural disasters, electromagnetic storms, network attacks and other impacts on the safety of the power system. From January to early February 2008, southern my country suffered the most severe long-term rain, snow and ice disasters in history, resulting in a large number of downward towers of the power lines, involving Hunan, Hubei, Guizhou, Jiangxi and many others. baby Province Sugar daddy.”
Constructing a new power system faces a new safety challenge
Sugar daddy. Shu Yinbiao pointed out that the safe operation of power systems is important to look at two indicators: one is stable voltage and the other is stable frequency, while the new power system faces a series of new safety challenges.
The new power system is undergoing three changes: the proportion of new power is gradually increasing, changing from the power system to the power electronic system, and diversifying its shape and performance. Shu Yinbiao believed: “Based on this, in terms of operational characteristics, the continuous controllable power supply has changed from a continuous controllable and strong uncertain power supply. The traditional power system power supply is mainly composed of conventional radial and hydroelectric power, and the power output is continuously controllable. NewNew power development in power systems is affected by climate change and weather conditions. It has the characteristics of randomness, volatility and intermittentness. The power generation decay is controllable and the height is uncertain. ”
”Stable characteristics and gentle. The technical foundation that maintains the same synchronization and stability of frequency and voltage has undergone significant changes. In terms of frequency stability, a conventional synchronous generator has a relatively large rotation habit and is the technical basis for maintaining frequency stability. The wind is a weak rotational habit system. The photovoltaic has no rotational habit, which has caused a significant decrease in the rotational habit of the power system. The ability to maintain a stable frequency has dropped significantly. Today, the new “Storm” power in the department cannot provide power to the Internet without any support. “Shu Yinbiao said.
At the same time, high-proportion new power and high-proportion electric electronics bring two major technologiesSugar babyArt problems.
First, the power is real, and the body is still shaking. Time equilibrium problem, daily, medium, short and long term equilibrium difficulties will increase. New power output fluctuations in the day. The probability of new power generation power such as Fengguang reaching the engine capacity is almost zero, and the probability of reaching more than 50% of the engine capacity is less than 10%. It is estimated that in 2060, the largest power generation power wave of the new power day will exceed 1.6 billion dry watts, accounting for 40% of the country’s largest load, which is comparable to the capacity basis of water, fire, nuclear power installed machines at that time. From the perspective of week-month equilibrium, due to continuous weather such as sun, windlessness, and cold tide, the weekly output of the new power is very uncertain. In 2020, the South East wind output is less than 10% of the machine. Escort lasted 4.9 days, and the output of photovoltaics in China’s up to 8 days for the engine with less than 20%. New power generation has poor seasonality. Sugar baby is 100 to 200 hours less than summer application hours, and the wind power is 100 to 200 hours less than that in summer. escortThe effort and burden needs are incompletely matched in time.
In addition, the above changes bring a series of safety issues. Shu Yinbiao said Sugar baby: “As the proportion of new power increases, the power system has shown new stable features and generated new safety problems. In September 2016, Sugar daddy strongly attacked southern Australia, with power and electronic power output accounting for 55%, and the transport circuits were in trouble, and a large number of wind turbines were disconnected. Due to the lack of system rotation habits, frequency collapses. September 2015 Manila escort. Sichuan Pingping-Jiangsu DC had a double-blocking problem. At that time, the China Eastern Power Network used a negative load of 140 million dry watts, and the China Eastern Power Network sent 4.9 million kilowatts of power, accounting for only 3.5% of the China Eastern Power Load. After the problem, the frequency of the Huadong Internet dropped to 49.58Hz, and the drop rate exceeded the pre-determined value. After automatic device action and emergency adjustment, the system returned to normal frequency. ”
Sugar guarantees safety requirements theory and technical innovation for new power systems
Sugar of traditional power systems daddy analyzes theories and control methods. It is no longer complete. It is suitable for new power systems, and theories and technology innovations are innovated.
Shu Yinbiao pointed out that at first, we need to deepen basic theories, strengthen multi-time standard random planning and research, and qualitative understanding of the stability of new power systems. Furthermore, we will improve the ability to balance and adjust the power supply cats TC: