Multifunction realization of active electronic current transformer
In order to fit for the urgent requirement of the digital substation, the research of electronic current transformer (ECT) attracts more and more attention. The multifunction of ECT is especially studied in order to expand its application range. In this paper, a type of active ECT is introduced firstly. The redundant backup design of high-voltage circuit is presented after that. It will be greatly helpful for the improvement of stability and reliability of active ECT. The multifunction of lowvoltage side circuit is also discussed carefully. The local display, harmonic analysis and remote communication between ECT and master computer are all designed and realized. Therefore, the application field of active ECT will be expanded significantly. The validities of above circuits are all illustrated in Lab at last.
A new calibration method of electronic transformer applied in power system
In this paper, a new calibration method is proposed to fulfill the requirement of calibration of electronic transformer. At first, the fast measurement method of power frequency is presented. And then the principle of Quasi-synchronous DFT algorithm is introduced in order to satisfy the special requirement of fast harmonic analysis during the calibration of electronic transformer. Therefore the amplitude error and phase error of electronic transformer could be obtained based on this new calibration method. The performance of method is verified by simulation results.
Project management education: The human skills imperative
Abstract This paper is intended to provide an insight into the importance of human skills in project management success and the apparent lack of emphasis placed on this within the context of university education. The discussion will call upon the viewpoints of many notable authors in respect to the human or ‘soft’ skills that are necessary in the management of projects. Against this background a review will be conducted into how well project management literature and university education equips potential project managers in the area of human skills. As the PMBOK ® Guide is one of the major recommended texts in Australian universities offering project management education, the paper will identify that it predominantly emphasises the required ‘hard (technical) skills’ at the expense of the ‘soft (human) skills’. Subsequent discussion will highlight the need for a balance between hard and soft skills within project management education in universities. It will conclude that educators within this discipline should recognise the importance of incorporating greater human skills aspects into their educational programs.