City University of Hong Kong Department Name

 

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Electrical Efficiency and Power Quality

 

With the trend of using distributed generation system in modern gird and controlling the energy usage of the public, a new generation Advanced Metering Infrastructure (AMI) is needed. The basic motivation and idea behind the AMI is linking the consumer and the gird (utility companies) together for seamless interaction for enhancing the quality of services and saving energy generation and utilization cost. AMI also offers other functions like time-based pricing, consumption data for consumer and utility companies, power quality monitoring, remote control operation from utility companies, tamper and energy theft detection and the capability to communicate with other intelligent devices in the home.

 The AMI starts with smart meters to retrieving the correct information from the end-point of the gird and, after that the information collected will be transmitted back to the Meter Data Management System through the Communication Infrastructure. As a key element of the AMI, the smart meter determines the functionality and ability of the whole system. A prototype meter was developed for this purpose as shown in Fig. 1.

Figure 1: Novel Smart Meter Prototype

 This smart meter is capable to provide most of the functionality same as the High-End PQ Meter available in the market nowadays, including power data, harmonics, sag, swell, notches, transients and compressed waveforms. This meter is capable to provide real-time electrical data monitoring to the operator miles away through various communication means. The architecture overview of the meter is shown in Fig. 2.

Figure 2: Architecture overview of the novel smart meter

The meter uses an efficient Codec for data compression which reduces data rate for use with low-bit rate communication network like Zigbee. In the laboratory test, electrical waveforms captured by the smart meter are transmitted back to the server through Zigbee network. One example is shown in Fig. 3.

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 Figure 3: Example of electrical waveforms transmission

 

Related Publications :

 

Journal articles:

Tse Norman, Lai LL. Wavelet-based algorithm for signal analysis. EURASIP Journal on Advances in Signal Proceeding, Vol. 2007, Article ID 38916.

Tse Norman, Zhou Long, Lai LL. Wavelet-based algorithm for power quality analysis. European Transaction of Electrical Power, 20: 952–964, 2010.

Xu Qingshan, Lai Loi Lei, Tse, Norman CF, Ichiyanagi Katsuhiro. A Multiple-Sessions Interactive Computer-Based Learning Tool for Ability Cultivation in Circuit Simulation, IEEE Transactions on Education, 54(1), 56-62, 2/2011.

Wang Junsong, Tse Norman, Gao Zhiwei. Synthesis on PI-based pitch controller of large wind turbines generator, Energy Conversion and Management, 52(2), 1288-1294, 2/2011.

Tse Norman C.F, Chan John YC, Lau WH. and Lai LL. Hybrid Wavelet and Hilbert Transform with Frequency Shifting Decomposition for Power Quality Analysis, IEEE trans. Instrumentation and Measurement, 61(12), 3225-3233, 2012.

Tse Norman CF, Chan John YC, Lau WH. Poon Jone TY and Lai LL. Real-time Power Quality Monitoring with Hybrid Sinusoidal and Lifting Wavelet Compression Algorithm, IEEE Trans, Power Delivery, 27(4), 1718-1726, 2012.

Conference papers:

So Albert, Tse Norman, Chan WL, Lai LL. Development of a prototype for a low cost power quality meter for utility and consumer assessment. Proceedings of IEEE International Conference, London, UK, April 2000, pp. 96-101.

Lai Simon, Tse Norman, Wong Peter, Lai LL. Analysis of zero sequence passive filter harmonics mitigation device for building wiring system. Proceedings of the 5th International Conference on Power System Management and Control, IEE UK, London, UK, April 2002, pp.118-123.

Lee RPK, Lai LL, Tse Norman. A web-based multi-channel power quality monitoring system for a large network. Proceedings of the 5th International Conference on Power System Management and Control, IEE UK, London, UK, April 2002, pp.112-117.

Tse NCF, Lai SHW. Electrical energy efficiency study of commercial/domestic complex. Proceedings of the 1st IEE International Conference on Building Electrical Technology, IEE Hong Kong, China, October 2004, pp.213-220.

Tse Norman CF. Practical application of wavelet to power quality analysis. Proceedings of IEEE Power Engineering Society General Meeting 2006, Palais du Congres, Montreal, Canada, Jun 2006. (CD ROM)

Tse Norman CF. Wavelet-based algorithm for detection of voltage fluctuation. Proceedings of APSCOM 2006, the 7th International Conference on Advances in Power System Control, Operation and Management, IET Hong Kong, China, Oct-Nov 2006. (CD ROM)

Tse Norman. Wavelet-based algorithm for power quality analysis. Proceedings of IEEE Power Engineering Society General Meeting 2007, Tampa, USA, June 2007. (CD ROM)

Tse N, Zhou L, Lai LL. Wavelet-based algorithm for nonstationary power system waveform analysis. Proceedings of ICWAPR 2008, International Conference on Wavelet Analysis and Pattern Recognition, Hong Kong, China, August 2008. (CD ROM)

Tse Norman, Chan John, Lai LL. Development of a smart metering scheme for building smart grid system. Proceedings of APSCOM 2009, the 8th IET International Conference on Advances in Power System Control, Operation and Management, IET Hong Kong, China, Nov 2009. (CD ROM)

Tse Norman CF, Ng Wing WY, Chow TT, Chan John, Lai LL, Yeung Daniel S, Li Jincheng. Data mining of building electrical information based on Radial Basis Function Neural Network. Proceedings of ISAP 2009, the 15th International Conference on Intelligent System Applications to Power Systems, Curitiba, Brazil, 2009. (CD ROM)

Ma Y, Zhou Long, Tse Norman, Osman Abdi, Lai LL. An initial study on computational intelligence for smart grid. Proceedings of ICMLC 2009, the 2009 IEEE International Conference on Machine Learning and Computing, Baoding, Hebei, July 2009. (CD ROM)

Tse Norman, Zhou Long. Detection of voltage variations due to distributed energy resources. Proceedings of the IEEE Power Engineering Society General Meeting 2009, Calgary, Alberta, Canada, July 2009. (CD ROM)

Chow Tin-tai, Fong KF, Tse Norman, Fong Alan, Lin Zhang, Chan Apple. Studying energy audit via intelligent project studio. Proceedings of CLIMA 2010, the 10th REHVA World Congress, Antalya, Turkey, May 2010. (CD-ROM)

Tse Norman CF, Lau WH, Chan John YC. ZigBee based smart metering network for monitoring building integrated electric vehicle charging circuits. Proceedings of the IEEE Power Engineering Society General Meeting 2010, Minneapolis, USA, July 2010, in press.

Mok YK, Tse Norman CF, Lau WH, Leung, MC. Experiment-based Simulation for Distortion Behavior in LV Networks for Microgrid Modeling, General Meeting of the IEEE-Power-and-Energy-Society (PES), 24/7/2011- 28/7/2011.

So MK, Lau WH, Tse Norman CF, Tsang KF, Leung MC. Locating Major Harmonic Current Contributors by Layered Knowledge Discovery in Database, General Meeting of the IEEE-Power-and-Energy-Society (PES), 24/7/2011 - 28/7/2011.

Mok Y K, Tse Norman C F, Lau W H, A study of the effects of voltage distortion on current harmonics generated by modern SMPS driven home appliances in smart grid network, Proceedings of the 9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM) 2012, IET Hong Kong, China, 18 - 21 Nov 2012. (CD ROM)

Chan John YC, So Jacky MK, leung MC, Tse Norman CF, Kong Percy, Power Quality and Energy Usage of a Multi-Purpose Building in Hong Kong, Proceedings of the 9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM) 2012, IET Hong Kong, China, 18 - 21 Nov 2012. (CD ROM)

Leung M C, Mok Y K, Tse Norman C F, Fong Alan M L, New MVAC control by making use of Human Behavioral Based Technique to achieve Energy Efficiency, Proceedings of the 9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM) 2012, IET Hong Kong, China, 18 - 21 Nov 2012. (CD ROM)

Lau W H, Shun Simon, Lam Ryan, Chung Henry, Tse Norman C F, Lai L L, The development of a smart grid and communication co-simulator, Proceedings of the 9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM) 2012, IET Hong Kong, China, 18 - 21 Nov 2012. (CD ROM)


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