Yuan Zeng

Tianjin University

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i-10 index

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Bing Sun

Tianjin University

Hongjie Jia

Jilin University

Chao Qin

Tianjin University

Ruipeng Jing

Tianjin University

Junzhi Ren

Tianjin University

Waiying Guo

Tianjin University

Yunfei Li

Gansu University of Traditional Chinese Medicine

Wei Wei

AviChina Industry & Technology (China)

Yizheng Li

Ministry of Education of the People's Republic of China

Shimeng Dong

State Grid Corporation of China (China)

Cooperative Institutions

Tianjin University

134

State Grid Corporation of China (China)

China Southern Power Grid (China)

Chinese Academy of Sciences

North China Electric Power University

Tsinghua University

Zhejiang University

Shanghai Jiao Tong University

Harbin Institute of Technology

University of Chinese Academy of Sciences

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Covariance Analysis-guided Energy Storage System Deployment for Available Transfer Capability Enhancement

2022 International Conference on Power Energy Systems and Applications (ICoPESA) (2022)

Peng Dong Hao Sheng Lang Zhao Yuan Zeng Xueya Wei

The high variability introduced by renewable generation may lead to a reduction of the available transfer capability (ATC). In this paper, a novel conceptual method of ATC enhancement is proposed which improves the ATC by reducing the variance of the total transfer capability (TTC). Compared to the conventional methods that aim to shift the mean of TTC to the right, the proposed method can improve the utilization of transmission assets. The nucleus of the proposed method lies in a developed algorithm that can identify the most influential random variables to the variation of TTC. As such, smoothing out the power fluctuations of the main contributors will reduce the variance of TTC most effectively. Numerical study on the IEEE 24-bus reliability test system (RTS) is presented to demonstrate the effectiveness and the efficiency of the proposed method.

Smoothing

10.1109/icopesa54515.2022.9754389

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Discrete monkey algorithm and its application in transmission network expansion planning

Jingran Wang Yixin Yu Yuan Zeng Wenpeng Luan

Monkey algorithm (MA) is one of the evolution algorithms originally developed for optimization problems with continuous variables. In this paper, a discrete monkey algorithm (DMA) was proposed for transmission network expansion planning, one discrete optimization problem. It includes the representation of solution, the modification of objective function, climb process, watch-jump process, cooperation process, somersault process, stochastic perturbation mechanism and termination criteria. Large-step and small-step climb process are designed to avoid the disordered climb direction during the MA optimization process. Cooperation process and stochastic perturbation mechanism are also introduced to improve computational efficiency. The proposed method is applied to a 18-bus system and the IEEE 24-bus system. Numerical results demonstrate that DMA has powerful computational capability and is capable of solving different dimensions of expansion planning problems efficiently with small population size.

Climb

Representation

10.1109/pes.2010.5589468

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Citations (19)

Research on Applied Dynamic Equivalence Model for Wind Farm Based on Double-fed Wind Power Generating Units

Guangdong Electric Power (2012)

Yuan Zeng

Aiming at complicated simulation calculation due to adoption of detailed model for wind farm,the dynamic equivalence of wind farm is studied.The wind farms which share the same unit type and parameter are chosen and wind speed equivalence based multiple units parallel method is proposed;wind farms which own the same unit type but different parameters are taken as an example of the adoption of homology equivalence based capacity weighting method.On the base of DIgSILENT/PowerFactory and by comparison of the simulation method of multiple units parallel method,capacity weighted model and the detailed model under circumstance of wind speed change and transient faults,precision and acceptability of different models are verified,the result of which shows that the method is practical and effective.

Power system simulation

Source

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Comparison of Several Indices Determining Weak Buses Ranking Based on Bus Jacobian Matrix

Yuan Zeng

In order to meet the need of ranking some key load buses for a large-scale power system,some indices for evaluating the singularity of bus Jacobian matrix were proposed.Then the indices were applied to weak buses ranking and their validity was evaluated.The simulation shows that all the indices except the determinant indexa,re suitable for the weak buses ranking,and the bus sensitivity index is recommended for its strong physical meaning.

Matrix (chemical analysis)

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Citations (1)

Equivalence of stability criteria for time-delay systems

Frontiers of Electrical and Electronic Engineering in China (2010)

Haiyun An Hongjie Jia Yuan Zeng Wei Wei

Stability criterion

10.1007/s11460-010-0013-2

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A Feasible Region Analysis Method for Continuous Commutation Failure in HVDC

2021 IEEE Power & Energy Society General Meeting (PESGM) (2021)

Yuan Zeng Yang Li Yan Li Wei Wei Waiying Guo

In order to mitigate continuous commutation failure that often occurs in High Voltage Direct Current (HVDC) systems, the concept of the feasible region of continuous commutation is proposed combined with the principle of commutation failure and the feasible region theory, which can be used as a criterion for continuous commutation failure. Through the analysis of the fault transient process and DC control system, the continuous commutation failure is predicted. Based on this, the feasible region of continuous commutation in the pre-fault operating parameter space of HVDC system is established. According to the positional relationship between the current operating point and the feasible region of continuous commutation, control strategy can be formed to provide help for operators in operation parameter selection and mitigation of continuous commutation failure. In the end of the paper, the validity of the proposed theory is verified by means of simulation carried out on the PSCAD/EMTDC platform.

Commutation

High-voltage direct current

Transient (computer programming)

10.1109/pesgm46819.2021.9637970

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Improvements on economic analysis of coal transportation and power transmission

Hao Wang Yuan Zeng

The economic analysis of coal transportation and power transmission in traditional studies do not consider the reliability and environmental factors and their influences on the critical distance. In this paper, the assessment method based on system operation simulation can evaluate the fuel cost, environmental cost and reliability cost in each time period. Economic analysis of the instance for coal transportation and power transmission is comparatively studied from the point of total social cost of unit electricity. Moreover, the sensitivity analysis of railway cost, environmental cost and reliability cost on critical distance is studied. The results show that the environmental cost and reliability cost have a great influence on the critical distance and cannot be ignored in the economic analysis of coal transportation and power transmission.

Power transmission

Economic cost

Economic Analysis

10.1109/pesmg.2013.6672591

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Reliability Evaluation & Analysis of UHVDC Transmission System

Advanced materials research (2013)

Cong Zhao Yuan Zeng Guang Yu Lei

The reliability of UHVDC (ultra-high voltage direct current) transmission system is significant to the development of power grid. The paper selects dual 12-pulse converters on each pole to model and analyze the UHVDC transmission system. Firstly, the system is divided into six subsystems to evaluate the reliability by the fault tree analysis method. Then based on the fault frequency and the repair time of each subsystems bottom components, the paper calculates the fault frequency and the repair time of each subsystem. Using the frequency and duration method, the paper calculates the fault probability, fault frequency and repair time of the whole system. Finally, it is validated by the actual data of typical lines.

Transmission system

10.4028/www.scientific.net/amr.860-863.2107

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An optimization Method for Active Power Sensitivity Analysis

2021 International Conference on Power System Technology (POWERCON) (2018)

Yi Gao Yuan Zeng Fengbin Zhang Waiying Guo Chao Qin

Sensitivity analysis is a classical method for power network analysis, which is widely used in static security analysis of power system. However, the conventional sensitivity analysis method is based on the linearization of power flow equation, assuming that the variation of control variables would continue working on power system until reaching a new steady-state operating point. It neglects the quasi-steady-state physical response of power equipment to various control operations, so it is not suitable for the real-time control strategy of a power grid. Based on the actual active power sensitivity analysis of a large power grid, this paper deems that the quasi-steady-state response of power systems must be taken into account, dividing the variation of control variables into initial variation and final variation but only the final variation could act on the new steady-state operating point. As a result, a practical active power sensitivity analysis optimization method was developed which can meet the demand of real-time online control strategy. It has been applied to several dispatching control centers.

Operating point

Linearization

Variation (astronomy)

Power Optimization

10.1109/powercon.2018.8601617

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Citations (6)

An improved risk assessment considering spinning reserve of power system with wind farm integration

Yuan Zeng Baozhu Zhou Wenfeng Zhu Chao Qin Xin Zhang

The massive integration of wind power brings more challenges to the safe operation of power system. In this paper, risk assessment methods of power system with wind power integration are studied by using DSR (dynamic security region) and risk assessment theory. The basic construction method of DSR boundary is introduced. The risk index calculation and comprehensive analysis method of wind power integration system are proposed based on DSR, which can give quantitative indicators of the system day-ahead scheduling plan and present the serious fault elements as well as vulnerable nodes of the system. A way to calculate the up and down spinning reserve capacity added to generator bus is discussed. Test results on the New England 10-genrator 39-bus system is presented and proves the effectiveness of this approach.

System Integration

10.1109/tencon.2015.7372963

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