Design Engineer

• Aug 2020 - Present

Junior Engineer

• Jan 2018 - Aug 2020

1. Develop electrical and AV designs, determining the type and arrangement of secondary circuits of sound system equipment for building service. Design PA system for rail station, airport, stadium, exhibition hall, etc.2. Sound system modelling and simulation. Prepare reports.3. Sound system testing and tuning(SPL, STI, FR).4. Electrical and heat load calculations, organising electric power supply (UPS, HVAC, HVDC) for sound system equipment in installations. 5. AutoCAD drawing, 2D schematics and as-built layouts, and some 3D design of loudspeaker mounts and visualization, etc.6. Control system and network design. Programming and configuring DSP (TCP/IP, WiFi, RF). Network setting and troubleshooting (Router/L3 switch). Integration of Sound System to PLC/BMS/Fire systems using contact closures and other interfaces. Integration of Sound Systems on the Auckland Rail Network (we do PA for all stations), and Auckland Airport (we are the sole supplier for the terminal wide PA systems)7. Site meetings and commissioning coordination with head contractors (Hawkins/Fletchers/Downers) and engineers (Beca/Aurecon/Opus)8. Research new developments and innovations on sound system equipment and its control systems. Develop research ideas into technical plans.9. Organising and reading project drawings from clients, collecting and abstracting information related to sound system equipment design.10. Preparing cable list, equipment inventory for quotations from designs and tenders.11. Preparing specifications, reports, solution briefs and schematics

Electrical Engineer

• Mar 2014 - Mar 2017

Responsibilities1. Provide design service to power distribution, transmission and generation utilities, both greenfield site and modifications to existing utilities including protection, control systems, SCADA, and metering etc.2. Prepare technical specifications of contracts and service reports for clients and check feedbacks.3. Project management as a project chief engineer following through project’s tendering, planning, design, construction, modification, commission process.4. Prepare budget estimation at conceptual design and detailed design status.5. Conference with customers at regular intervals to ensure project requirements are being met.6. Design dispatching automation systems, protection systems, monitoring control systems, metering systems. (e.g. Line/busbar protection RTU, SCADA, HMI, AVC, AGC, PMU, ERTU, Gateway, Switch, GPS, EMS, etc.)7. Optimize input data signal and output data signal of facilities(IED) in power plant and substation sites for remote control systems to meet the requirements of the National Grid Control Center. 8. Provide protection and automation solutions to ensure power plant’s connection to the Grid System.9. Network modelling, load flow and fault calculation, analysis.10. Developing tenders and proposals.Main projects: 1. A 413.792MW(Gas)/333.02MW(Fuel-oil) Dual Fuel Fired Power Generation Facility at Sirajganj, Bangladesh2. Smart grid scheduling control system construction in Zhejiang Jiaxing State Grid. 3. 230kV Bayintnaung Substation Extension Project in Myanmar 4. Busbar protection modification for 220kV Yuelong Substation in Zhejiang Ningbo State Grid 5. Smart Substation visualization and remote expert diagnosis system construction in Hangzhou State Grid 6. Luojia 220kV substation construction in Hangzhou State Grid 7. China Guangdong Nuclear Power Daishan # 4 offshore wind power access systems 8. Zhejiang Lanxi Power Plant #4 Unit grafting 220kV systems ….and other almost 90 projects.

Researcher

• Sep 2011 - Mar 2014

Project: Shanghai Shentong Metro Co., Ltd. science and technology projectResponsibilities (rank):Research and simulation on DC traction short-circuit fault and calculation models（1）Setting method of DC traction system protection（1）Simulation and analysis of rectifier unit AC-DC interaction（1）Calculation method to make DC side current be equivalent to AC side current（1）Key Achievements：Paper: Xu Cheng, Wang Huifang, Wang Xiaobao. Analysis of Short-Circuit Model for DC Traction Supply System. Power System Protection and Control, Vol.41, No.22, 2013, p84-90.National Invention Patent: Wang Huifang, Xu Cheng. Transient short-circuit current calculation method of DC traction rail network. State Intellectual Property Office of The P.R.C. 2015, No.ZL 201310339393.4.Research Reports:Xu Cheng, Wang Huifang. Fault analysis and computational modeling of DC traction systemXu Cheng, Wang Huifang. Discussion on relationship between DC side and AC side current of rectifier unit

Assistant Software Engineer

• Jan 2012 - Jan 2014

Project: Rail network protection setting calculation and simulation software development. Responsibilities (rank):Design and development of DC fault calculation program（1） Design and development of parameter maintenance interface, related test work（2） Development of relay protection simulation and automatic verification function（2） Design and development of semi-automatic relay setting function（3）Key Achievements:Developed an integrated management software for the rail grid visualization graphics, computing and simulation demands. It has already been applied in Shanghai Shentong Metro Group’s engineering design, daily operation and maintenance work.

Operation Assistant Intern

• Nov 2011 - Feb 2012

Responsibilities (rank):Customers’ rating data processing (1). Data classification (1). Advertising information filtering (1). Picking up excellent customer reviews (1). Recommending top comments to the home page (1). etc. Responsibilities (rank):Customers’ rating data processing (1). Data classification (1). Advertising information filtering (1). Picking up excellent customer reviews (1). Recommending top comments to the home page (1). etc.