PROFESSIONAL ENGINEER
Summary Statement
These are the competency Units and Elements. These elements must be addressed in the Summary Statement (see Section C). If you are applying for assessment as a Professional Engineer, you will need to download this page, complete it and lodge it with your application.
Competency Element A brief summary of how you haveapplied the element Paragraph in the careerepisode(s) where the element is addressed
PE1 KNOWLEDGE AND SKILL BASE
PE1.1 Comprehensive, theory-based understanding of the underpinning natural and physical sciences and the engineering fundamentals applicable to the engineering discipline
During the first week, I first studied why traditional centralized optimization cannot meet the demand of large-scale power systems.
After that I summed up the system requirements, and grouped the key requirements into the following three points.
CE1.5
CE2.5
PE1.2 Conceptual understanding of the mathematics, numerical analysis, statistics and computer and information sciences which underpin the
engineering discipline
After that I studied the local characteristics of the reactive power balance, then I established the object function model.
I established mathematical model that makes three aspects integrative optimization.
Before hardware design, I must fix the needs of the State Grid Information & Telecommunication Branch. In the first two weeks, I analyzed the design requirements of the power meter reading system given by them.
CE1.6
CE1.6
CE2.5
PE1.3 In-depth understanding of specialist bodies of knowledge within the engineering discipline
In addition, in order to get a global optimum solution more rapidly and better, I improved the selection, crossover and mutation operator in GA.
I did a PCB design for the coordinator, routers and end nodes in the smart power meter reading system.
As a hardware designer on the project, I applied my knowledge and skills to do electrical hardware architecture design…
CE1.13
CE2.10
CE2.14 PE1.4 Discernment of knowledge
development and research directions within the engineering discipline
In the objective function, I also considered the security operation of electrical networks, deal the restriction of voltage and reactive power produced by
the generator.
I summarized the currently available communication technologies for power
meter reading system. CE2.6
PE1.5 Knowledge of contextual factors impacting the engineering discipline
After that, I studied the characteristics and measures of voltage regulation of modern grid.
After investigation, I found the existing power meter reading system is hard to manage.
After that I summed up the current limitations of monitoring methods,
CE1.5
CE2.1
CE3.6
PE1.6 Understanding of the scope, principles, norms, accountabilities and bounds of contemporary engineering practice in the specific discipline
For the economic need of power system operation, therefore, I took the power loss minimum as objective function.
The application also showed that the software could obtain a good economy and a favorable voltage level.
In addition, it can effectively save national power energy.
After the detail study of the
implementation of Z-stack protocol stack, I used IAR as the software development environment.
CE1.6
CE1.13 CE2.6
CE3.8
PE2 ENGINEERING APPLICATION ABILITY
PE2.1 Application of established engineering methods to complex engineering problem solving
I did the research on voltage and reactive power optimization under smart grid. In my study, the characteristics, principles and measures of reactive power and voltage regulation of modern grid were analyzed.
After that I considered a variety of wireless networking technology according to above three requirements, and read a lot of papers and technical materials.
I designed two types of wireless sensor network node hardware platforms, including terminals node and coordinator node which used TI CC2430 as the core chip.
CE1.3
CE2.6
CE3.8
PE2.2 Fluent application of engineering
techniques, tools and resources I developed a data input module and user interface with Visual Basic. The RPO computation program was coded by Visual C++ based on the popular Access database.
I chose the ZigBee technology for the following reasons: simple and fast (enough for power meter).
On the hardware side, in order to design a low-power ZigBee-based network node, I used the intelligent temperature sensor DS18B20 and TI (Texas Instruments Incorporated) company's production of the ZigBee CC2430 radio chip SOC solutions as the core node device. I chose TI's Z-Stack 2006 protocol stack as the software platform.
CE2.6
CE3.7
CE3.8
PE2.3 Application of systematic engineering synthesis and design processes
Then I designed a distributed optimal coordinated control method of voltage and reactive power based on a modified genetic algorithm.
I used the protel software to do the PCB design, including component layout, cascade design, power supply and the ground plane processing, cabling, etc. In my work, the design and production of system hardware circuit schematic and PCB board was finished by Protel 2001. I used C language as the software development language.
CE1.8
CE2.10
CE3.8 CE3.8
PE2.4 Application of systematic approaches to the conduct and management of engineering projects
In my algorithm, I considered the regulation of power factor control, economy and reliability assessment index such as the limit of voltage, the best reactive power compensation level, the best reactive power margin, the best transformer turns ratio and the best range of the transformer.
In the following two weeks, me and my group partner developed the system architecture. I was responsible for the hardware design, and my partner was responsible for software architecture and antenna design.
The first two weeks, I first summarized the needs of the project.
CE1.8
CE2.7
CE3.5
PE3.1 Ethical conduct and professional accountability
The traditional algorithm of voltage and reactive power control was difficult to meet smart grid’s requirements, so I planned to develop a heuristic algorithm to solve this problem.
In the project, I was the hardware designer. It was my responsibility to do hardware architecture design, do chip and other component type selection, do the schematic design, including the power supply circuit, reset circuit, interface circuit, power amplifier circuit, coupling circuit, communication interface circuit, etc.
Analysis the characteristics of electromagnetic compatibility of the terminal were also my duty.
It was my responsibility to design both hardware and embedded software in the monitoring system, including low-power ZigBee-based network node hardware design, choose the type of intelligent temperature sensor, do embedded software programming with IAR embedded workbench, etc.
CE1.5
CE2.3
CE2.3
CE3.3
PE3.2 Effective oral and written communication in professional and lay domains
I had a long conversation with a staff of the State Grid Information &
Telecommunication Branch. I participated in a project meeting between our lab and State Grid Information & Telecommunication Branch.
I wrote a report with Microsoft Word to summarize the manager’s statement of the following two points…
CE2.5
CE3.5
CE3.5
PE3.3 Creative innovative and proactive demeanour
I also developed a new algorithm of the voltage and reactive power optimization, including voltage partitioning method, distributed optimally coordinate control method of voltage and reactive power method based on a modified genetic algorithm.
Then I decided to design the intelligent power meter with ZigBee.
With the experience of last project, I developed a solution of the power temperature monitoring system, including the hardware and embedded software implementation.
CE1.3
CE2.6
PE3.4 Professional use and management of information
After a review of the relevant papers in the library, I found that this problem is a mixed nonlinear optimization problem with many variables, constraints and extremisms.
After that I searched on some forum, I found that I only need to change the file “config.pro” in the c:\. Then the problem was solved.
I searched on Google, and I found the problem related to the component layout and electromagnetic compatibility. In the procedure of solving problems, I improved my ability of communicating and search problems with Google and Technology Forum.
CE1.5
CE2.10
CE2.12
CE3.16
PE3.5 Orderly management of self, and professional conduct
In the following two weeks, I studied the simple genetic algorithm.
Through this project, I gained hardware design experience in electrical
engineering.
I also gained the skill of how to use IAR Embedded Workbench software with this project.
I participate the national computer course in China and I passed the exam in Grade 4
CE1.7
CE2.14
CE3.16
In: Continuing Professional Development
PE3.6 Effective team membership and team leadership
…some other problems were solved by discussing with my group partner. After that I met group mate Fan who did the similar job in the last project. He said he faced the same problem before. He told me to replace the linker file with the one on his computer. Then the problem was solved.
CE2.13
