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第27届中国过程控制会议（CPCC2016）

作者： Xifeng Guo Fangjun Luan Qizhuhui Gao Yao Jia Yunlu Li Information & Control Engineering Faculty Shenyang Jianzhu University Institute of Electric Power System and Motor Drives Northeastern University

Optimized design is presented with adding lead-lag correction to improve low-pass filter character according to the harmonic detection of ***-order ellipse filter is chose as the core of the harmonic detection after compared with kinds of *** of parameters which affects system performance is worked out by analyzing distribution of system zero-pole point,then lead-lag correction is added to optimize low-pass *** result shows that optimized design raised in this paper fits the detection of power harmonic and fundamental reactive current better,nice accuracy and dynamic response are obtained in the detection system,it has a strong engineering practicality to improve compensation performance of APF.

关键词： filter Optimal Design of Low Pass Filter in the Harmonic Current Detection Filter

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Low carbon transmission expansion planning considering demand side management

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Dianli Xitong Zidonghua/Automation of Electric power systems 2016年第23期40卷 61-69页

作者： Cheng, Yaohua Zhang, Ning Kang, Chongqing Meng, Junxia Yan, Huaguang Department of Electrical Engineering Tsinghua University Beijing100084 China State Key Laboratory of Control and Simulation of Power System and Generation Equipments Tsinghua University Beijing100084 China China Electric Power Research Institute Beijing100085 China

The implementation of transmission expansion planning towards low carbon development can effectively alleviate the "carbon lock" effect in the power industry and facilitate the transition to low carbon power system. The demand side management (DSM) is able to reduce the needs of power supply and transmission capacity and further bring down the generation coal consumption and transmission losses. It is therefore an important means of carbon emission reduction in power system. The paper analyzes the impact of DSM and low carbon development on transmission planning at first. By analyzing the performance of typical DSM measures in the constraints, a low carbon transmission expansion planning model is established considering DSM. Nonlinear constraints in the planning model are transformed into linear ones using inequality separation method, turning the planning model into a mixed integer linear programming model. The case study shows the effectiveness of the proposed model with IEEE RTS79 system. The results suggest that considering DSM in the transmission expansion planning can effectively reduce the transmission expansion investment and the total carbon emissions, which can improve overall benefits of the power system. © 2016 Automation of Electric power systems Press.

关键词： Demand side management

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Damping DFIG-associated SSR by Adding Subsynchronous Suppression Filters to DFIG Converter controllers

Damping DFIG-associated SSR by Adding Subsynchronous Suppres...

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IEEE power and Energy Society General Meeting

作者： Huakun Liu Xiaorong Xie Jingbo He Hui Liu Yunhong Li State Key Labor. of Power System Department of Electrical Engineering Tsinghua University National Power Dispatching and Control Center North China Electric Power Research Institute

ISBN: (纸本)9781509041695

Subsynchronous resonance (SSR) issue, namely subsynchronous control interaction (SSCI), was observed in doubly-fed induction generators (DFIGs) based wind farms connected to fixed series compensation. This paper proposes a novel scheme to deactivate SSR by adding subsynchronous suppression filters (SSFs) to DFIG converter controllers. Based on the impedance model analysis, a quantitative index is defined and implemented to identify the "best" location of converter controllers for embedding a SSF. A specific SSF scheme is recommended for practical application, which is to embed a SSF into d-axis channel in inner current loop of rotor-side converter. This scheme has been applied to a practical series-compensated DFIG-based wind farm system located in North China, which has experienced real SSR events. Both impedance analysis and time-domain simulation have validated the effectiveness of the proposed scheme. This control scheme has a broad application prospect due to its easiness to implement and robustness to changeable operating conditions.

关键词： Doubly-fed induction generator (DFIG) Fixed series compensation (FSC) Subsynchronous resonance (SSR) Subsynchronous control interaction (SSCI) Subsynchronous suppression filter PPAN gene semiconductor relays Converters series compensation controllers Current rings impedance analysis Wind farms

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Lattice Boltzmann simulation of the gas-solid adsorption process in reconstructed random porous media

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Physical Review E 2016年第4期93卷 043101-043101页

作者： L. Zhou Z. G. Qu T. Ding J. Y. Miao MOE Key Laboratory of Thermal-Fluid Science and Engineering School of Energy and Power Engineering Xi’an Jiaotong University Xi’an 710049 China Beijing Key Laboratory of Space Thermal Control Technology Beijing Institute of Spacecraft System Engineering Beijing 100094 China

The gas-solid adsorption process in reconstructed random porous media is numerically studied with the lattice Boltzmann (LB) method at the pore scale with consideration of interparticle, interfacial, and intraparticle mass transfer performances. Adsorbent structures are reconstructed in two dimensions by employing the quartet structure generation set approach. To implement boundary conditions accurately, all the porous interfacial nodes are recognized and classified into 14 types using a proposed universal program called the boundary recognition and classification program. The multiple-relaxation-time LB model and single-relaxation-time LB model are adopted to simulate flow and mass transport, respectively. The interparticle, interfacial, and intraparticle mass transfer capacities are evaluated with the permeability factor and interparticle transfer coefficient, Langmuir adsorption kinetics, and the solid diffusion model, respectively. Adsorption processes are performed in two groups of adsorbent media with different porosities and particle sizes. External and internal mass transfer resistances govern the adsorption system. A large porosity leads to an early time for adsorption equilibrium because of the controlling factor of external resistance. External and internal resistances are dominant at small and large particle sizes, respectively. Particle size, under which the total resistance is minimum, ranges from 3 to 7 μm with the preset parameters. Pore-scale simulation clearly explains the effect of both external and internal mass transfer resistances. The present paper provides both theoretical and practical guidance for the design and optimization of adsorption systems.

关键词： Flows in porous media Lattice-Boltzmann methods

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Approaches to control design for micro hydropower plant with induction generator

Approaches to control design for micro hydropower plant with...

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International Symposium on Electrical Apparatus and Technologies (SIELA)

作者： Sergey Ryvkin Gleb Ziborov Laboratory of Integration System Trapeznikov Institute of Control Sciences RAS Moscow Russia Department of Electrical and Electronic Apparatuses NRU “Moscow Power Engineering Institute” Moscow Russia

The popularity of renewable energy sources is increasing. It is a reason for development of technologies, particularly for micro hydropower plant. The paper presents control solutions for induction generator. The main goal of control is stabilization of the output voltage and frequency in island mode by variable load especially. One of the most popular solutions of voltage control is a switching of fixed capacitor banks depending on load conditions. Nowadays semiconductor back-to-back converters and static reactive power compensators are also widely used for voltage control purposes.

关键词： Capacitors Turbines Reactive power Generators Automatic voltage control Hydroelectric power generation

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Cascade control-Based ICFF-SMC with Adaptive Disturbance Compensator for PMSM

Cascade Control-Based ICFF-SMC with Adaptive Disturbance Com...

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第28届中国控制与决策会议

作者： Zisong Yu Dazhi Wang Qingzhong Gao Ye Tao Institute of Electric Power System and Motor Drives Northeastern University School of Electrical Engineering Shenyang University of Technology Electric Dispatch and Control Center State Grid Liaoning Electric Power Supply Co.Ltd

ISBN: (纸本)9781467397155

The non-ideal factors of permanent magnet synchronous motor(PMSM) drive system,such as harmonics of rotor flux,cogging torque,and voltage source inverter(VSI) nonlinearity cause the speed ripple and deteriorate the speed and current regulation *** suppress these disturbances,this paper proposes a novel cascaded robust current and speed control stragety for *** proposed method consists of three control terms:a proportional term,an integral continuous fractional function sliding mode(ICFF-SMC) term,and an adaptive disturbance compensation *** first and third control terms are employed to guarantee the system stability,and the second control term is used to suppress the nonlinear disturbance and parameter uncertainty and to reduce the chattering ***,the simulation results show the validity of the proposed control scheme.

关键词： permanent magnet synchronous motor(PMSM) integral continuous fractional function sliding mode(ICFF-SMC) adaptive disturbance compensator cogging torque harmonics of rotor flux voltage source inverter(VSI) nonhnearity

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Disturbance Observer Based Robust Finite control Set Predictive Torque control for Induction Motor systems

Disturbance Observer Based Robust Finite Control Set Predict...

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第35届中国控制会议

作者： Junxiao Wang Fengxiang Wang Shihua Li Ralph Kennel School of Automation Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Institute for Electrical Drive System and Power Electronics Technische Universitaet Muenchen

ISBN: (纸本)9781509009107

A disturbance observer(DOB) based finite control set predictive torque control(PTC) scheme for induction motors subject to lumped disturbances is proposed in this *** control an induction motor using the inverter switching character directly,the finite control set predictive torque control(PTC) method is studied which evaluates the electromagnetic torque and stator flux in the object *** optimized switching vector is choosed to control the insulated gate bipolar transistors(IGBTs),it also can minimize the error between reference signals and predicted *** to direct torque control(DTC),PTC method does not need a modulator and an internal current PI controller,but the speed loop also adopts the PI *** improving the disturbance reject ability and simplifying the PTC control structure,this work introduces a novel PTC method based on DOB technique which does not need the PI speed controller.

关键词： induction motor disturbance observer(DOB) predictive torque control(PTC) direct torque control(DTC) disturbance reject ability

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Real-Time Recommendation Algorithm of Battery Swapping Stations for Electric Taxis

Real-Time Recommendation Algorithm of Battery Swapping Stati...

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IEEE power and Energy Society General Meeting

作者： Pengcheng You Steven H. Low Zaiyue Yang Yongmin Zhang Lingkun Fu State Key Laboratory of Industrial Control Technology Zhejiang University Engineering and Applied Science California Institute of Technology State Key Laboratory of Wind Power System Zhejiang Windey Co. Ltd.

ISBN: (纸本)9781509041695

This paper proposes a real-time algorithm that recommends battery swapping stations (BSSs) to electric taxis (ETs) that need their batteries swapped. The algorithm takes into consideration available batteries at BSSs, driving ranges of ETs and the current traffic conditions, etc, in order to avoid long queues at BSSs. We consider a basic model that assumes past decisions are perfectly executed, and formulate an optimal ET-to-BSS assignment problem. This problem is an integer program and therefore hard to scale. For real-time implementation, we approximate the optimal assignment problem by a repeated potential game and propose an iterative best response algorithm to compute ET-to-BSS assignments. Preliminary numerical results suggest that our heuristic algorithm solves the optimal assignment problem approximately.

关键词： Batteries Taxi manual reduction Swap basic model Heuristic algorithms long slide STATIONS algorithms Real time Electricity Optimal

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Stackelberg Game Model of Wind Farm and Electric Vehicle Battery Switch Station

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IOP Conference Series: Materials Science and engineering 2017年第1期199卷

作者： Zhe Jiang Zhimin Li Wenbo Li Mingqiang Wang Mengxia Wang Department of Electrical Engineering Harbin Institute of Technology Harbin 150001 China. Electric Power Research Institute State Grid Shandong Electric Power Company Jinan 250003 China. Key Laboratory of Power System Intelligent Dispatch and Control Shandong University Jinan 250061 China. Collaborative Innovation Center for Global Energy Interconnection (Shandong) Jinan 250061 China.

In this paper, a cooperation method between wind farm and Electric vehicle battery switch station (EVBSS) was proposed. In the pursuit of maximizing their own benefits, the cooperation between wind farm and EVBSS was formulated as a Stackelberg game model by treating them as decision makers in different status. As the leader, wind farm will determine the charging/discharging price to induce the charging and discharging behavior of EVBSS reasonably. Through peak load shifting, wind farm could increase its profits by selling more wind power to the power grid during time interval with a higher purchase price. As the follower, EVBSS will charge or discharge according to the price determined by wind farm. Through optimizing the charging /discharging strategy, EVBSS will try to charge with a lower price and discharge with a higher price in order to increase its profits. Since the possible charging /discharging strategy of EVBSS is known, the wind farm will take the strategy into consideration while deciding the charging /discharging price, and will adjust the price accordingly to increase its profits. The case study proved that the proposed cooperation method and model were feasible and effective.

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Congestion management in deregulated electricity market using FACTS & multi-objective optimization

Congestion management in deregulated electricity market usin...

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Indian control Conference (ICC)

作者： Vrushali Khatavkar Madhuri Namjoshi Anjali Dharme PHD in restructured and deregulated power systems from Bharti Vidyapeeth pune Department of Electrical Engineering Progressive Education Society's Modern College of Engineering Pune India Master's degree in Control Systems from Progressive Education Society's modern College of Engineering Pune Indian Navy as Lieutenant Commander and also worked in MANIT Bachelor of Engineering degree in Electrical Engineering from Maulana Azad National Institute of Technology Bhopal Degree in electrical engineering University of Pune India Electrical power system Restructuring and deregulation Micro-grid Distribution system Demand side management and energy conservation

This paper presents placement of FACTS controllers by using genetic algorithm for single objective optimization and strength Pareto evolutionary algorithm for three objective optimization simultaneously in power systems. The testing is done using Matlab on IEEE 30 bus system. Placement of two types of FACT devices is carried out for single objective optimization three objective optimization and the result of the three objective optimization are compared with the base case. The system is uniformly loaded for optimization at 110 % and 120%. Two FACTS are considered for placement i) TCSC Thyristor controlled series capacitor ii) SVC (Static Var compensator) in order to improve the branch loading index of the system, reduce losses and improve the voltage stability index. The placement of FACTs is obtained with location, type and value.

关键词： Optimization Linear programming Thyristors Static VAr compensators power system stability power capacitors Sociology

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