2:30 pm on January 12, 2021，from the Graduate School of Shandong University、Hosted by the Graduate Work Department of the Party Committee，The 4th (total 993) Graduate Academic forum hosted by the School of Electrical Engineering was held at the 4th floor of the Electric Power Building of Qianfoshan Campus。This forum invited Cheng Xueqi from Shandong Electric Power Company、Yongjun、Gu Chao three experts，The themes of the lecture are "transmission line operation and maintenance and new technology"、"UHV DC transmission technology and equipment" and "UHV transformer operation and maintenance analysis and detection technology"。This forum is chaired by Professor Li Qingquan。
The lecture starts，Researcher Cheng Xueqi around the basic knowledge of the transmission line、Questions during line operation、Application of new technologies and new equipment for transmission and transportation inspection、Application of the application of new materials，Brief introduction to DC high -voltage transmission、Basic knowledge of the transmission line、There are main problems in the operation of the transmission line、New equipment for transmission operation、New Technology。Researcher Cheng Xueqi first introduced the classification of the line according to the function and voltage level，and the development history of the empty line of Shandong power grid、scale、advantages and disadvantages, etc.，focuses on the characteristics of UHV AC and DC lines and the composition of the air line，At the same time，Researcher Cheng Xueqi mentioned，The "double high" form that currently has high proportion of new energy and high -proportion of power electronic equipment、The new generation of power systems widely developed by new equipment and new technologies are developing rapidly，The "double carbon" goal of carbon Dafeng and carbon neutralization proposed and accelerated the realization process，The power grid has always faced the test of the "double peak" power balance of the "double peak" power balance of the summer and winter and the morning and evening.，These are new requirements for energy transformation in 2021,。Next，He pointed out that the line trip of the line is the main problem in operation，and introduced external forces in detail、Lightning Strike、Bird Knight、Dance、Wind bias、Switting Flash, etc. The cause of the line trip of the line。Next，Researcher Cheng Xueqi mentioned the development and application of the new technology of drone inspection in transmission and transportation，and a composite horizontal load tower、Special wires -carbon fiber compound aluminum twisted wire、Anti -Bird Device — Umbrella -shaped anti -bird thorns、Compound spraying of pollution -proof flash coating factories、The application of new equipment such as smart line construction and three -dimensional digital grids in contemporary power grids，Make the development of the power grid in the future.。
Next，Researcher Yongjun briefly introduced the principle of DC transmission and development process，For the layout of the stream station、Main device functions to explain，And introduced the Overseas DC project of State Grid Corporation。Researcher Yongjun first made a brief overview of the high -voltage interchange, DC transmission，For the basic DC transmission system、Type、The advantages and disadvantages and the development process are briefly introduced，Make a key analysis on the principle of DC transmission，There are basic components of streaming — the structure and characteristics of thyristor，Basic units of streaming -control strategies and functions of stream -changing valve。Next，He introduced the operation and operation related items of the flow transformer with the help of the video，and introduced the layout and role of the main equipment of the stream station in detail。Next，Researcher Yongjun mentioned 7 typical ways of running at high pressure DC，1 kind of full bipolar balance，Extremely complete、Run 8 kinds of operation 1/2，1/2 Single Polar Round runs 8 kinds，1/2 Single polar metal line runs 8 kinds，1/2 bipolar balance runs 16 kinds，Run 2 types of complete single -scale lines，and the complete single -pole metal line runs 2 types。Last，Researcher of Yongjun for Brazil Meishan Project、Pakistan Murlara DC Engineering and other international typical DC projects of the State Grid Corporation of China briefly introduced。
Next，Engineer Gu Chao briefly introduced the operation of UHV AC transformers and flow transformers，and new technologies for status detection/monitoring。Guo Chao's engineer first briefly analyzed the operation of the UHV transformer in Shandong，He said，State Grid Shandong Electric Power is responsible for operation and maintenance 1000KV UHV AC substation 5，Spring City Station、Changle Station、Gaoxiang Station、Caozhou Station and Weishan Lake Station，& Plusmn; 800KV UHV Stand Station 2 Block，is Yinan Stream Stream Station and Guanggu Streaming Station，Look from the year，The number of transformer defects has decreased，Indicate manufacturing quality、Increased inspection and acceptance，But the technology of throwing technical aspects compared to foreign manufacturers needs to be further improved，At the same time，Engineer Gu Chao also analyzed the problem of transformer equipment，Mainly there are insulation quality problems、Group component failure and improper design。Next，Engineer Gu Chao introduced the status detection technology of the transformer，Commonly used status detection methods mainly include a routine power outage test、Diagnostic test、Powering detection and online monitoring，and，When the electrical equipment occurs or when the failure occurs,，Usually accompanied by "heat、Sound、Light、Electric、Water、Qi "and other fault feature information，Corresponding to infrared thermal image detection、Ultrasonic detection、UV discharge detection、Special high frequency method、DGA and other status detection new technologies apply to equipment detection of power system。Last，A few practical examples of engineers using transformers and high resistance abnormalities illustrate the common emergencies in operation and maintenance management，To explain the importance of daily operation and maintenance management。
In the later question session，Cheng Xueqi、Yongjun、Gu Chao three experts answered the work of the students one by one、Extra high voltage interchange、Questions on the application of drone inspection，Professor Li Qingquan also put forward his own opinions on the content of the lecture。This issue of "His Majesty" Graduate Academic forum is successfully concluded in the applause of the audience。
Introduction to the speaker:
Cheng Xueqi，Engineering Technology App researcher，Member of the Standardization Technical Committee of the Electricity Industry Insulation Square，Enjoy government allowance professional and technical talents，"Rich People Xinglu Medal" winner，Mainly engaged in the management of transportation and maintenance of transmission lines。Participate in a number of science and technology special research，Where4Items won the provincial and ministerial science and technology awards, authorized invention patents7Items, publish papers10Yu Chapter。
Yongjun，Engineering Technology App researcher，Professional leader of the State Grid Corporation，Mainly engaged in the management of operation and maintenance and maintenance of streaming stations。Participate in a number of science and technology special research，Where6Items won the provincial and ministerial scientific and technological progress award;、"Small Town (Central Village) and Machine Well Power Construction Technology", etc.16This book.
Gu Chao，Zheng Senior Engineer，Long -term engaging in technical supervision of transmission and transformation equipment、Status assessment、Scientific research development and other work，National Transformer Delaid Committee、Member of the Electricity Industry Transformer Delade Committee and a high -voltage test bidding committee，Get China Electricity、The second prize of scientific and technological progress in Shandong Province1Item, the first prize of the Scientific and Technological Progress of State Grid Company1item.
