Yang Aijun: From Veteran to "Inverter Expert"

For more than 30 years, he has practiced the "craftsman spirit" with practical actions, and has grown from a veteran with only a secondary technical education to a "frequency conversion expert" who solves the domestic frequency conversion interference problem and writes his innovative achievements into university teaching plans.
Selected as the "Employment Star" of retired soldiers in Shandong Province in 2021
.

He is Yang Aijun, the squad leader of the inspection team in the electrical workshop of Shandong Haihua Group Thermal Power Company

"Layman" becomes "Master"

"Layman" becomes "Master" "Layman" becomes "Master"

During his service in the East China Sea Fleet of the Navy, Yang Aijun was repeatedly rated as an excellent soldier and a technical expert
.

In 1991, 22-year-old Yang Aijun retired from the army and was assigned to work in the electrical workshop of Shandong Haihua Group Thermal Power Branch

He started from the basics and kept "charging" himself.
He taught himself more than 50 sets of professional books such as "Inverter Principle and Maintenance", "Inverter Speed ​​Control", "Digital Circuit", etc.
, and learned how to recognize the secondary control of electrical equipment.
, wiring, drawing and control design components selection and other skills, but also timely deal with various faults in the operation of the equipment
.

Over the past few years, he has changed from a "layman" in the electrical profession to a company-approved technical backbone, and has gradually grown from an ordinary maintenance electrician to a senior maintenance electrician technician, and has become a well-known "frequency conversion expert".
The "flag-carrying man" of the company's electrical technology work
.

Forcibly change "difficult life" into "unique life"

Forcibly change " difficult life" into "unique skills"

The electrical workshop is the power center of Haihua Group.
Yang Aijun's maintenance and testing class is responsible for the two important tasks of relay protection and electrical testing, which are directly related to the safety and stability of the power system
.

In August 2008, he was appointed as the squad leader of the test-preserving class, and became the first choice for undertaking urgent and dangerous construction tasks

　　For thermal power companies, it is a "hard job" to ensure long-term safety and economical operation of equipment
.

Yang Aijun literally turned this "difficult job" into a "unique job"

　　In the inverter transformation, Yang Aijun led the team members to conduct in-depth research on the inverter's external wiring, its own quality, input power supply, and the accumulation of interference, and repeated more than 40 experiments
.

In the end, Yang Aijun installed a "self-made reactor" on the input and output sides of the inverter to isolate the power supply and eliminate power pollution, thus solving the problem of frequency conversion clutter interfering with DCS and ensuring the safe operation of the DCS of the five furnaces

　　Professor Zeng Yi from Shandong University, a well-known inverter expert in China, took this key achievement as a typical case and wrote it into the textbook "Design and Maintenance of Variable Frequency Speed ​​Control Devices"
.

Zeng Yi said: "This variable frequency innovation achievement strongly proves the existence of the interference phenomenon of the frequency converter and the theoretical concept of eliminating the second harmonic with a reactor, which provides an effective theoretical basis for the rational application of the frequency converter

　　Dedicate all skills to the enterprise

　Dedicate all skills　to the enterprise Dedicate all skills to the enterprise

　　People who are familiar with Yang Aijun say that he is a good teacher and a good brother
.

He is not only good at learning new technologies and processes, but also combines work practice and his own experience to formulate training programs, conduct business exchanges, share skills and experience, and continuously improve the overall professional quality and operational skills of the team, forming a unique transfer model.

　　Yang Aijun paired with the team members, explained the control principle of electrical equipment in combination with the drawings, performed the actual wiring operation at the maintenance site, familiarized himself with the drawing, wiring and drawing of the secondary control of electrical equipment as soon as possible, and carried out the operation functions of the electrical equipment according to the equipment process requirements.
Design and component selection to improve the ability to quickly handle equipment failures during operation
.

Combined with the progress of the company's expansion project, Yang Aijun conducted on-site skill training and on-site examinations by means of centralized lectures in the class and on-site specific guidance to further improve the operational skills of each employee

　　Under the influence and leadership of Yang Aijun, the personnel in the test-guarding class learn business, improve their skills, and strengthen their quality, which has become a good place for talents
.
In the class, 3 chief technicians of Weifang City and 2 chief technicians of Shandong Province have emerged successively, 1 person has won the labor medal of enriching the people and rejuvenating Shandong Province and the technical expert of Shandong Province, and 1 person has won the Weifang City Technician with Outstanding Contributions
.
In the first electrical skills competition of the soda industry in Shandong Province, the two participating workers of the class won the first and second runner-up
.