Guangdong Yudean Group Co.

Dongguan Guangdong, China

Guangdong Yudean Group Co.

Dongguan Guangdong, China
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News Article | April 20, 2017

BURLINGTON, Mass.--(BUSINESS WIRE)--InterGen announced today that it has scheduled a conference call with InterGen investors for Thursday, April 27, 2017 at 11:00 a.m. ET to report operating and financial results for fiscal 2016 fourth quarter ended December 31, 2016. The call is open to InterGen investors and will be hosted by Timothy Menzie, InterGen President and CEO; Mike Novelli, InterGen COO; and Greg Pratt, InterGen CFO. Current InterGen investors who would like to participate in the call and view the accompanying slide presentation and financial information must register at or contact ABOUT INTERGEN InterGen is a global power generation firm with 11 power plants in operation, representing a total generation capacity of 6,331 megawatts (5,378 net equity MW) and including a wind farm. In addition, InterGen operates three compression facilities and a 65-km gas pipeline. These facilities are located in the United Kingdom, The Netherlands, Mexico and Australia. InterGen is jointly owned by the Ontario Teachers’ Pension Plan and China Huaneng Group/Guangdong Yudean Group. For more information, visit

Zheng K.,Jilin University | Zheng K.,Jilin Institute of Architecture and Civil Engineering | Zhao D.,Jilin University | Zhang X.,Guangdong Yudean Group Co.
Hanjie Xuebao/Transactions of the China Welding Institution | Year: 2012

Dissimilar metal welds between SA335P91 and 12Cr1MoV ferritic heat-resistant steels are widely applied in the main steam pipe and the reheater on boiler heating surface for the supercritical (SC) and ultra-supercritical (USC) thermal power units in China. The characteristics of microstructure and weldability of two steels were described, and the welding mechanism for dissimilar metal weld between two steels was investigated. Through theoretical analysis and experiments, the main factors in dissimilar metal welding that resulted in hot and cold cracks, decrease of toughness, embrittlement and type IV softening cracking tendency were determined. Corresponding technological methods and heat treatment procedures to prevent the above defects were proposed and solid joints were achieved.

Wu Y.,Guangdong Yudean Group Co. | Wen Z.,Guangdong Power Grid Corporation | Shen Y.,Guangdong Power Grid Corporation | Fang Q.,Huazhong University of Science and Technology | And 2 more authors.
Advanced Materials Research | Year: 2012

A computational fluid dynamics (CFD) model of a 600 MW opposed swirling coal-fired utility boiler has been established. The chemical percolation devolatilization (CPD) model, instead of an empirical method, has been adapted to predict the nitrogen release during the devolatilization. The current CFD model has been validated by comparing the simulated results with the experimental data obtained from the boiler for case study. The validated CFD model is then applied to study the effects of ratio of over fire air (OFA) on the combustion and nitrogen oxides (NOx) emission characteristics. It is found that, with increasing the ratio of OFA, the carbon content in fly ash increases linearly, and the NOx emission reduces largely. The OFA ratio of 30% is optimal for both high burnout of pulverized coal and low NOx emission. The present study provides helpful information for understanding and optimizing the combustion of the studied boiler. © (2012) Trans Tech Publications, Switzerland.

Hong R.-K.,Guangdong Yudean Group Co. | Shen Y.-L.,Guangdong Power Grid Corporation | Zhao Z.-F.,Huazhong University of Science and Technology
Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering | Year: 2012

Emission characteristics of CO and NOx from a 600 MW supercritical boiler with burners arranged in front and back walls were studied by both field experiment and numerical simulation. Results show that the CO concentration in the flue gas is within 500-2500 mg/m3. The turning point of NOx emission appears when the excess air coefficient α1 is within 0.86-0.90 in main burning area, higher than the designed α1 (0.80) for low NOx emission, in which case the corresponding ratio of overfire air to secondary air is about 27%-32%. NOx emission characteristics of the boiler are influenced by the design of its HT-NR3 burner for low NOx emission, indicating a negative correlation to CO emission. At the load of 600 MW and a constant total air volume, the rise of overfire air ratio from 32% to 49% would result in a significant reduction of CO concentration and combustible contents in fly ash, but an increase of NOx emission, when the influence of oxygen content on CO and NOx emission weakens obviously, which may raise the possibility of high-temperature corrosion on side walls in the main burning area.

Wu Y.,South China University of Technology | Wen F.,Zhejiang University | Ding J.,Guangdong Yudean Group Co. | Hong H.,Guangdong Yudean Group Co. | Li C.,Guangdong Yudean Group Co.
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2010

The generation-right trade is compatible with the philosophy of the current generation scheduling. It is an inevitable and yet important issue to build the optimal bidding strategies for generation companies participating in the generation-right trading market. In this work, the bidding behaviors of generation companies in this market are analyzed first, and then the optimal bidding models for both the selling and buying entities are developed under the well-established chance-constrained programming framework. Taking the features of the developed model into account, a multilayer embedded algorithm, in which the well-developed genetic algorithm is employed in the outer cycle, and a simple algorithm based on finite discrete variables developed in this work used in the inner cycle, is presented to solve this problem. Finally, a test example with 10 market participants is served for demonstrating the basic features of the developed model and method, and a further analysis on the bidding behaviors of generation companies carried out based on simulation results. © 2010 State Grid Electric Power Research Institute Press.

Cai Q.,South China University of Technology | Wen F.,Zhejiang University | Chen X.,South China University of Technology | Ding J.,Guangdong Yudean Group Co. | And 2 more authors.
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2012

With the background that the two regulations, i. e., the management of the grid-connected operation of power plants and the management of ancillary services, are progressively being enforced in several regional power systems in China, an evaluation index system is developed for the two regulations in this work. With the reasonableness, scientificity and effectiveness as the second-level indices, eleven third-level indices are first defined numerically for building the evaluation index system. Then, the well-established fuzzy analytic hierarchy process is employed for the comprehensively quantitative evaluation of the two regulations. The fuzzy set approach is used to identify the membership grades of each index to various evaluation grades, while the analytic hierarchy process is applied to determine the weight of each index. Finally, an actual example of the Guangdong power system is served for demonstrating the effectiveness and practicality of the developed evaluation index system. © 2012 State Grid Electric Power Research Institute Press.

Cai Q.,South China University of Technology | Wen F.,Zhejiang University | Ding J.,Guangdong Yudean Group Co. | Hong H.,Guangdong Yudean Group Co. | Li C.,Guangdong Yudean Group Co.
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2012

In view of the electricity market, a comprehensive multi-objective reserve bidding model is developed considering the factors of economics, reliability and emissions. To describe the supply reliability associated with reserves, the expected reserve deficiency is defined. They can be used to distinguish the capability of a generator and that of an interruptible load in providing the reserve service. On this basis, a two-stage algorithm is presented to solve the multi-objective bidding model. Firstly, the improved multi-objective particle swarm optimization algorithm is employed to find the Pareto solutions of the multi-objective bidding model which minimizes the reserve capacity cost, the expected reserve deficiency and the emissions separately. Then, the entropy weight decision-making method is used to evaluate the Pareto solutions, and obtains the optimal reserve allocations among the bidders. Finally, an example of the electricity market with 12 bidders including generators and interruptible loads is employed to illustrate the essential feature of the developed model and its efficiency. © 2012 State Grid Electric Power Research Institute Press.

Shen Y.,China Electric Power Research Institute | Li X.,South China University of Technology | Liu Y.,China Electric Power Research Institute | Fan J.,South China University of Technology | And 3 more authors.
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2014

Using laser-induced breakdown spectroscopy (LIBS), the main elements in fly ash, including C, Si, Al, Mg and Fe, are measured. KBr is employed as binder to press the fly ash powder to pellets. The differences of fly ash plasma characteristics in different gas environments (CO2, air, N2, Ar) are analyzed, and their effects to unburned carbon measurements are studied. The results show that the spectral intensities obtained in argon are the highest among the four environments, and intensities in nitrogen take the second place. The intensities in air atmosphere are just a little less than those in nitrogen, while those in carbon dioxide are the least. Furthermore, carbon element in CO2 disturbs the unburned carbon analysis extremely. Comparing the plasma temperatures in different environments, plasma in CO2 atmosphere get the lowest temperature, implying it is the hardest to induce in CO2.

Zhong L.,Guangdong Yudean Group Co. | Deng J.,Guangdong Yudean Group Co. | Sun W.,Guangdong Yudean Group Co. | Yuan L.,Guangdong Yudean Group Co. | And 4 more authors.
Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering | Year: 2015

Taking a 700 MW utility boiler as an object of study, which has been retrofitted for low-NOx emission, experimental tests and numerical simulation were conducted at 300 MW low load to investigate the effects of following 3 burner operation modes on the performance and coal consumption of the boiler, such as putting the burners respectively in CDEF 4 layers. DEF upper 3 layers and CDE middle 3 layers into operation. Results show that at the low load of 300 MW, the operation mode of burners has a significant effect on the reheat steam temperature and unit coal consumption. In the DEF operation mode, the flue gas temperature at entrance of platen superheater is significantly improved, the heat transfer of reheater is enhanced, resulting in greatly increased reheat sleam temperature, improved turbine efficiency and reduced unit coal consumption for power generation and supply. Under the load conditions of 300 MW or below, the DEF operation mode is recommended, so as to improve the comprehensive efficiency of the unit. ©, 2015, Shanghai Power Equipment Research Institute. All right reserved.

Ding J.Y.,Guangdong Yudean Group Co. | Zheng J.H.,South China University of Technology | Jing Z.X.,Guangdong Yudean Group Co. | Wu Q.H.,South China University of Technology | And 2 more authors.
Asia-Pacific Power and Energy Engineering Conference, APPEEC | Year: 2013

This paper proposes a probabilistic model for optimal joint allocation of energy and spinning reserve to determine energy and spinning reserve capacities. The model takes into consideration both the hourly changes of load demands and the probability of generators' contingencies. The objective function aims at minimizing not only fuel costs caused by power generation but also the costs associated with spinning reserve supply. The proposed model is tackled using the Primal-Dual Interior Point Method (PDIPM), which is capable of solving optimization problems with nonlinear equality and inequality constraints efficiently. This paper reports on the simulation results obtained by using a benchmark IEEE Reliability Test System (IEEE-RTS). The simulation studies also include a comparison between the proposed probabilistic model and the conventional deterministic model, which suggests that the joint allocation of energy and spinning reserve can be optimized by the proposed model for economical and reliable purposes. Consequently, it can be applied to minimize the costs of running the power system with adequate spinning reserve. © 2013 IEEE.

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