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Liu Z.,North China Electrical Power University | Xu B.,Guangdong Power Grid Corporation | Niu D.,North China Electrical Power University
Dianwang Jishu/Power System Technology | Year: 2013

Based on the analysis on development tendency of smart grid in future, the development prospect and ultimate objective of demand response technology based on the platform of smart grid are predicted and revealed. Research results show that the open and interactive smart grid in future is favorable to the development of demand response technology. The game model of demand response among plants, power grid and power consumers based on the platform of smart grid is researched by equilibrium analysis in the game theory, and the game equilibrium of demand response under complete information is discussed while the restrictions to both power suppliers and power consumers are deregulated, and the market rules for the game of demand response are given. Source

Yu W.,Shanghai JiaoTong University | Liu D.,Shanghai JiaoTong University | Yu N.,Guangdong Power Grid Corporation
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2013

With the integration of distributed generation (DG) and energy storage system (ESS), the active control system of distribution network should have the ability to reconcile global optimization and local autonomy of distribution network by actively managing the operations of DG, ESS and distribution network. Indicator of feeder control error (FCE) was proposed to represent differences between actual operating status and global optimized status. Constant interchange control mode and object tracking control mode based on FCE were presented for local autonomy control based on the global optimization. The effectiveness of the coordinate control methods of active distribution network based on FCE were verified by theoretical analysis and simulation. © 2013 Chin. Soc. for Elec. Eng. Source

Wen Z.,Tsinghua University | Meng F.,Tsinghua University | Chen M.,Guangdong Power Grid Corporation
Journal of Cleaner Production | Year: 2014

To evaluate the potential for energy conservation and CO2 emissions mitigation in China's iron and steel industry during 2010 and 2020, a detailed model was developed and applied based on Asian-Pacific Integrated Model (AIM). Three scenarios including the business as usual (BAU) scenario, the integrated policy (INT) scenario and the strengthen policy (STR) scenario have been set to describe future policy measures in relation to the development of the iron and steel industry. Results show that STR scenario in 2020 would realize an additional energy saving potential of 58.2 million tce accounting for 14.18% of the total energy consumption, while the potential for CO2 mitigation of 218.0 million ton CO2 takes up 14.53% of the predicted emission. And results indicate that technology promotion is the main driver for energy saving and emissions reduction, more than structure adjustment. In order to meet the targets set by the 12th Five-Year Plan in China's iron and steel industry, it is essentially to promote technologically advanced approaches with a high-demand policing rate. Specific energy conservation technologies could aid significantly to the cause. In the long term, energy saving and emissions reduction of China's iron and steel industry will rely mostly on technology promotion. © 2013 Elsevier Ltd. All rights reserved. Source

Xie S.,Guangdong Power Grid Corporation
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2011

A new software system based on the uniform common information model (UCIM) and substation configuration descriptive language (SCL) has been developed. The power grid model used by the control center is automatically built from the model of digital substations, and real-time data is retrieved through the abstract communication service interface (ASCI). The static model and real-time data between the digital substations and the control center are seamlessly integrated. © 2011 State Grid Electric Power Research Institute Press. Source

Su H.,Guangdong Power Grid Corporation
Gaodianya Jishu/High Voltage Engineering | Year: 2015

In order to study the transition ability of the first ±200 MVA cascaded STATCOM in 500 kV Dongguan Substation under different types of grid failure, we theoretically calculated the 220 kV bus voltage drop caused by the 220 kV or 500 kV line to ground failure in nearby substations. Based on PSCAD/EMTDC simulation platform and the recorded wave file data, the entry and exit of STATCOM transient responses and strategies was verified as well as the reactive power support of the STATCOM when the grid voltage sags. Finally, with the field operation data of the STATCOM in the last two years, we analyzed the response of STATCOM in detail, considering such various typical grid failures as the severe phase-to-phase or phase-to-ground failures. The results show that STATCOM in accordance with design specifications correctly responds within 20 ms, transporting more than 200 MVA transient reactive to the power grid, and it plays an important role in supporting grid voltage stability. © 2015, High Voltage Engineering Editorial Department of CEPRI. All right reserved. Source

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