What is the relationship between frequency and voltage in the electrical system?

System voltage is not directly related to frequency.

The system voltage depends on the induced potential of the generator. By changing the excitation current of the generator, the generator voltage can be adjusted. Only when the reactive power of the system increases and the reactive power of the generator can no longer increase will the system voltage drop. So the active power determines the frequency and the reactive power determines the voltage.

Voltage and frequency are the two most important indicators of the electrical network. These are the two measurements of sine waves, just like the two standards you use to measure the quality of an object. be a parallel relationship.

Voltage and frequency are used to measure whether the reactive power and active power meet the load requirements, respectively. Let’s talk about frequency first. Frequency is related to fait ensures that the entire system has an active power balance. Single-machine systems can be explained by the concept of power angle stability, and multi-machine systems can be explained by relative power angles. When a system failure occurs, the stability of the system can be measured by observing whether the system frequency deviates. That is, small disturbances return to the original frequency and phase angle, and large disturbances establish a new stable point, but the frequency remains at that level. 50 Hz. The generator The relative phase angle can be changed. In short, frequency stability is now relatively mature. The key is that there is no more advanced theory to explain the stability of the power system.

Voltage is the most erratic quantity in the entire system. We generally say that the voltage is related to the reactive power of the system.me. Of course, this is just one aspect. A more precise statement is tension. is related to the balance of reactive power when the system operates stably. Voltage stability is a very complex concept. Voltage stability is also related to the power acceptance of the load. The load can be replaced by an induction motor model. Its P-U curve is a "" curve, that is, the power P is an In. the process of increasing then decreasing, the power absorbed by the load can keep the voltage stable in the increasing range of P. However, the power absorbed by the load is greater than that Pm, which makes the system voltage start to lose its stability when. P decreases. To some extent, this phenomenon is more serious than the loss of frequency stability. Not only does it cause a drop in the voltage of the entire network, or even a power outage, but the frequency is alsoly unstable during the decline process.

At the 2020 TVB Thousand Stars Awards ceremony, this year's Best Actor and Best Actress awards were won by Wang Haoxin and Cai Sibei respectively. so two people became the most popular stars. in the city.

Actually, when we talked about Cai Sibei, we carefully explored her history in the industry. Like most female TVB artists, she entered the entertainment industry after the Hong Kong elections**. In the election, she won second place and was highly praised by TVB. She has played the lead role in many television and film series. This time she also won the Best Actress title. by TVB.

When Cai Sibei first entered TVB to film serialsOn television, she was questioned by everyone due to her immature acting skills, so she worked hard to enroll in relevant acting classes to improve her acting. SKILLS. It can be said that her hard work has paid off. As a determined person, she finally understood some of the true meanings of acting and performed very well in many major TVB drama series.

Cai Sibei's efforts have also been recognized by the company's senior management, but her reputation in the industry is not very good. After all, Cai Sibei won the queen's throne at such a young age, which embarrassed other seniors who entered the industry earlier than her and had longer qualifications. Additionally, many colleagues thought there was something wrong with his character. and iThey ridiculed her once. She lost all popularity. It turns out that since Cai Sibei has been in the industry for so long, all the male actors she came into contact with and worked with reportedly had scandals with her, such as Wang Haoxin, Luo Zhongqian, mentioned above. etc., so many netizens call it. While the TVB dynamo teases her, many viewers also have opinions on her character issues.

After all, if you want to be liked by TVB executives, in addition to having excellent acting skills, the most important thing is to be honest. TVB will permanently ban artists who have negative news. “An Xin Lian”, which was in turmoil two years ago, is a good example. Therefore, Cai Sibei is now reused by TVB. I hope she can cherish it and hone her acting skills to bring more good works to the audience. That's the most important thing.