Is there any employment premise in modern power system analysis?

Many people also think that since power plants are skilled workers, electrical majors are as competitive as electrical undergraduates. Actually, it is not. At present, China's major power plants are advancing to 600,000 on a large scale, which requires skilled workers to have higher quality (of course, people who are dissatisfied can also be considered to require higher diplomas), and 600,000 sets a universal goal of 60-90% undergraduate diplomas. In addition, in recent years, the expansion of university enrollment and the proliferation of college students have made the diploma of the whole industry rise. It is not difficult to see that even the employees in the factory have the advantage of high education, and so do other industries, which is due to the national conditions.

Therefore, most of the power systems are recruited by the above-mentioned schools when enrolling students. Among them, Guangdong, Fujian, Jiangsu, Zhejiang, Shandong, Beijing, Tianjin and Tangshan in the coastal areas, as well as major nuclear power and pumped storage power stations, Gezhouba, Three Gorges and Longtan hydropower stations, are strictly selected with generous treatment!

The mathematical model of power network is the basis of modern power system analysis. Why is it the foundation? Firstly, the power network model is the cornerstone of each iteration of Newton-Raphson algorithm in power system power flow calculation. Secondly, after the fault occurs, both static security analysis and dynamic security analysis need to modify the power grid model before further evaluation. The so-called power network refers to the whole composed of transmission lines, power transformers, parallel (series) capacitors and other static components. It can be described by node admittance matrix or node impedance matrix, which are both inverse matrices. The advantage of the short-circuit parameters described by the former lies in its sparsity. The latter describes the open circuit parameters of the network, which has the advantage that its elements contain the information of the whole network.