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2016 IEEE 7th Power India International Conference (PIICON)最新文献

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Detection of power quality disturbances in the utility grid using stockwell transform 利用斯托克韦尔变换检测电网电能质量扰动
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077376
Ankita Sharma, Om Prakash Mahela, S. Ola
Recently the open-access and competitive market power policy has been adopted by the utilities. Now, the electricity consumers are in a position to demand and expect a higher quality of service. The utilities and power providers have to provide a high quality of service to remain competitive as well as to retain or attract the customers. To achieve this goal an efficient power quality (PQ) monitoring and analysis system is required. This paper presents an S-transform based technique for the detection of power system operational events and power quality disturbances associated with these events. The power quality disturbances associated with the power system operational events such as switching on and off the loads, switching on and off the capacitor banks, tripping and reclosing the transmission lines, outage of the generator and utility network has been investigated effectively. The detailed simulation study of power quality disturbances has been carried out in MATLAB/Simulink environment.
近年来,公用事业采用了开放获取和竞争的市场力量政策。现在,电力消费者可以要求和期望更高质量的服务。公用事业和电力供应商必须提供高质量的服务,以保持竞争力,并保留或吸引客户。为了实现这一目标,需要一个高效的电能质量监测和分析系统。本文提出了一种基于s变换的电力系统运行事件和与这些事件相关的电能质量扰动检测技术。对电力系统运行事件引起的电能质量扰动进行了有效的研究,如负载的开断、电容器组的开断、输电线路的脱扣和重合闸、发电机和公用事业网络的停电等。在MATLAB/Simulink环境下对电能质量扰动进行了详细的仿真研究。
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引用次数: 1
Experimental analysis of power factor correction using magnetic energy recovery switch 磁能回收开关功率因数校正的实验分析
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077348
R. Garg, N. Gupta
Power factor correction is one of the major issue in electrical power system for maintaining its high efficiency. Low power factor leads to draw extra power from the source to fulfill the same power demand of load. This paper presents a technology named as Magnetic Energy Recovery Switch (MERS) for improving the power factor by compensating reactive power. MERS consists of four semiconductor devices (with antiparallel diodes) connected in full bridge configuration and a DC capacitor. Simulation study is conducted with resistive- Inductive load (to create the reactive power demand) and results are compared with and without MERS, whereas experimental analysis confirms the potential and effectiveness of the proposed technology for power factor improvement.
功率因数校正是电力系统保持高效率的主要问题之一。低功率因数导致从电源中吸取额外的功率来满足负载相同的功率需求。本文提出了一种通过补偿无功功率来提高功率因数的磁能量回收开关技术。MERS由四个半导体器件(具有反平行二极管)以全桥结构连接和一个直流电容器组成。在电阻-电感负载下进行了仿真研究(以产生无功功率需求),并将结果与不使用MERS进行了比较,而实验分析证实了所提出的技术在功率因数改进方面的潜力和有效性。
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引用次数: 0
ISTF-pid based D.C. servo motor control 基于ISTF-pid的直流伺服电机控制
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077237
Arjun Swami, P. Gaur
The objective of this paper is to control the speed of a non-linear D.C. servo motor using various control techniques. Installing only a Proportional controller (P) to control the system, it is observed that there is high overshoot (OS), undershoot (US) and the system takes time to achieve its steady state. The performance of the system relatively improves by installing a conventional PID controller as it decreases the overshoot, undershoot of the system and the system attains steady state faster. The conventional PID controller cannot tackle the nonlinear systems effectively and gives a poor tracking and disturbance rejection performance. In order to further improve the response of the system, Improved Self Tuning Fuzzy (ISTF)-PID controller has been used. In this technique fuzzy logic is used to tune the gains of a PID controller. The various control techniques that are discussed in this paper are designed to achieve the desired D.C. servo motor speed.
本文的目的是利用各种控制技术来控制非线性直流伺服电机的速度。仅安装比例控制器(P)来控制系统,观察到存在高超调(OS),欠调(US),系统需要时间才能达到稳定状态。通过安装传统的PID控制器,降低了系统的过调量和欠调量,使系统更快地达到稳态,系统的性能相对提高。传统的PID控制器不能有效地控制非线性系统,并且具有较差的跟踪和抗扰性能。为了进一步提高系统的响应性,采用了改进的自整定模糊(ISTF)-PID控制器。该方法采用模糊逻辑对PID控制器的增益进行整定。本文讨论的各种控制技术都是为了达到所需的直流伺服电机速度。
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引用次数: 0
An efficient controller for PV operated PMBLDC drive based electric vehicle system 基于PV驱动的PMBLDC驱动电动汽车系统的高效控制器
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077464
U. Kalla, Deven Gurjar, K. Rathore, Prateek Dixit
This Paper dealt with the design of an efficient controller for Photovoltaic operated permanent magnet brushless DC (PMBLDC) motor based electric vehicle system in MATLAB/Simulink platform. In the proposed scheme modeling and simulation of photovoltaic system, MPPT, and PMBLDC motor is carried out and simulation results are also presented in this paper.
本文在MATLAB/Simulink平台上设计了基于光伏驱动永磁无刷直流(PMBLDC)电机的电动汽车系统高效控制器。在本文提出的方案中,对光伏系统、MPPT和PMBLDC电机进行了建模和仿真,并给出了仿真结果。
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引用次数: 5
A new method for the estimation of time difference of arrival for localization of partial discharge sources using acoustic detection technique 提出了一种利用声探测技术估计局部放电源定位时到达时差的新方法
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077180
R. Ghosh, B. Chatterjee, S. Dalai
In an acoustic partial discharge (PD) detection system, estimation of time difference of arrival (TDOA) between acoustic signals arriving at a sensor array is an important criterion for accurate localization of PD sources inside a transformer. The localization accuracy can be improved by improving the accuracy of estimation of TDOA between sensors. The estimation of TDOA is a challenging task because acoustic signals are corrupted by noise, reverberation, echo and reflection of acoustic signals inside the transformer tank. Keeping this in mind, this paper presents a technique for the accurate estimation of TDOA by extraction of an estimate of the PD pulse from the recorded acoustic signals. The TDOA between two sensors is then calculated by finding the cross-correlation function between the two sensors. The acoustic path through the transformer tank and oil constitutes the physical system, which when excited by the PD pulse, gives rise to the acoustic pressure waves. An estimate of the PD pulse, which generates the acoustic pressure waves, may therefore be obtained by separating the acoustic response of the tank-oil physical system from the acoustic signal. The extracted PD pulse information gives an estimate of the instant of appearance of the PD pulse at each sensor, which makes the accurate estimation of TDOA possible.
在声局部放电(PD)检测系统中,估计到达传感器阵列的声信号之间的到达时间差(TDOA)是准确定位变压器内局部放电源的重要依据。通过提高传感器间TDOA估计的精度,可以提高定位精度。由于变压器槽内的声信号会受到噪声、混响、回波和反射等因素的干扰,因此TDOA的估计是一项具有挑战性的任务。考虑到这一点,本文提出了一种通过从记录的声信号中提取PD脉冲估计来准确估计TDOA的技术。然后通过求两个传感器之间的互相关函数来计算两个传感器之间的TDOA。通过变压器油箱和油的声路径构成物理系统,该物理系统在PD脉冲的激励下产生声压波。因此,通过将油罐-油物理系统的声响应与声信号分离,可以获得产生声压波的PD脉冲的估计。提取的PD脉冲信息给出了PD脉冲在每个传感器出现的瞬间的估计,从而使准确估计TDOA成为可能。
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引用次数: 2
Design & analysis of D-STATCOM for power quality improvement using ICCT with conventional controllers 利用ICCT和传统控制器改善电能质量的D-STATCOM的设计与分析
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077175
J. Bhutto, Richpal Bana
This paper presents the design & analysis of D-STATCOM using ICCT with conventional controllers to improve the power quality. The use of AC circuits in electrical power system has been a common practice nearly since the very inception of the interconnected power network. The most familiar loads on such a system were the constant power, constant impedance and constant current loads or a linear combination of thereof. In these cases, the voltage and current wave forms are nearly sinusoidal. But this is no longer the case with modern electric power system. Enormous use of the non-linear and time varying devices has led to distortion of source voltage and source current waveforms. As a consequence, recently the issue of power quality has become important. Both electric utility and end users of electric power are becoming increasingly concerned about the quality of electric power. The simulation model and results of proposed scheme are described and discussed in this paper.
为了提高D-STATCOM的电能质量,本文采用ICCT和常规控制器对D-STATCOM进行了设计和分析。在电力系统中使用交流电路几乎是一种普遍的做法,因为互联电网的开始。这种系统中最常见的负载是恒功率、恒阻抗和恒电流负载或它们的线性组合。在这些情况下,电压和电流波形几乎是正弦的。但现代电力系统已不再是这种情况。非线性和时变器件的大量使用导致了源电压和源电流波形的畸变。因此,最近电能质量问题变得很重要。电力公司和最终用户都越来越关注电力质量。本文对该方案的仿真模型和仿真结果进行了描述和讨论。
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引用次数: 0
Speed estimation of induction motor using TMS320F28335 digital signal processor 利用TMS320F28335数字信号处理器实现感应电机转速估计
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077285
Tanmay Tandel, U. Mate, Snehal Unde, Atul Gupta, Siddhartho Chaudhary
In the modern world, almost 90 percent of the motors used in the industry are induction motors. Induction motors are used in wide range of applications ranging from fans, pumps, compressors to their use in complex drives for critical application. As the world advances, newer applications come up which require robustness and complete operational control over an induction motor, when subjected to most adverse dynamic real time conditions. These applications need to be controlled using control techniques such as Field Oriented Control, which require the knowledge of induction motor. Use of sensors adds to the cost. If the machine parameters are known, it is possible to eliminate the use such costly hardware speed sensors and replace them with software speed estimators. Scope of this paper is design, simulation and implementation of speed estimation algorithm by estimating the rotor flux angle and slip in a Digital Signal Processor(DSP). The rotor flux angle and estimated speed can be used in sensor-less rotor field oriented control scheme. First, a code is developed for speed estimation of induction motor and is tested in MATLAB. Later, this code is ported to TMS320F28335 floating point DSP and is tested on a 415V, 3.3 HP 1430 RPM squirrel cage induction motor to estimate its speed in real-time.
在现代世界,工业中使用的电机几乎90%是感应电机。感应电机的应用范围很广,从风扇、泵、压缩机到关键应用的复杂驱动器。随着世界的进步,新的应用出现了,当受到最不利的动态实时条件时,需要对感应电机进行鲁棒性和完全的操作控制。这些应用需要使用控制技术进行控制,如磁场定向控制,这需要感应电机的知识。传感器的使用增加了成本。如果机器参数是已知的,就有可能消除使用这种昂贵的硬件速度传感器,并用软件速度估计器代替它们。本文的研究范围是在数字信号处理器(DSP)中通过估计转子磁链角和转差率来实现转速估计算法的设计、仿真和实现。转子磁链角和估计转速可用于无传感器转子定向控制方案。首先,编写了异步电动机转速估计代码,并在MATLAB中进行了测试。随后,将此代码移植到TMS320F28335浮点DSP上,并在一台415V, 3.3 HP 1430 RPM的鼠笼式异步电动机上进行测试,实时估算其转速。
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引用次数: 2
Artificial neural network based intelligent model for wind power assessment in India 基于人工神经网络的印度风电评估智能模型
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077305
A. Azeem, G. Kumar, H. Malik
Wind resource assessment is essential to evaluate the future wind power generation from a wind farm. As wind power generation depends directly on wind speed, therefore accurate wind speed prediction facilitates wind power generation. In this paper generalized regression neural network is employed for accurate wind speed prediction. The performance of proposed approach is evaluated using publically available dataset of different cities in India. Air temperature, earth temperature, relative humidity, daily solar radiation, elevation, latitude, heating degree days, cooling degree days, longitude and atmospheric pressure are used as input variables. Correlation coefficient of 0.99909 is obtained during training and 0.95143 during testing of GRNN model. The proposed GRNN model is then utilized to find wind speed and power potential of major wind power generating sites of Andhra Pradesh, India. A comparison between the measured and forecasted wind speed and power values validate that generalized regression neural network is an appropriate technique for long term wind speed and power prediction.
风力资源评估是评估未来风力发电能力的关键。由于风力发电直接取决于风速,因此准确的风速预测有助于风力发电。本文采用广义回归神经网络进行准确的风速预测。使用印度不同城市的公开数据集对所提出方法的性能进行了评估。输入变量为气温、地球温度、相对湿度、日太阳辐射、高程、纬度、加热度日、冷却度日、经度和大气压。GRNN模型训练时的相关系数为0.99909,测试时的相关系数为0.95143。然后利用所提出的GRNN模型求解了印度安得拉邦主要风力发电场的风速和功率潜力。通过实测和预报的风速和功率值的比较,验证了广义回归神经网络是一种适合长期风速和功率预测的技术。
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引用次数: 15
Identification of type of internal fault in indirect symmetrical phase shift transformer based on PRN 基于PRN的间接对称移相变压器内部故障类型识别
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077332
S. Bhasker, M. Tripathy, Vishal Kumar
This paper describes a technique for the detection of type of internal fault in an indirect symmetrical phase shift transformer (ISPST). An application of Pattern Recognition Network (PRN) is proposed as a core classifier to identify the type of internal fault. Four type of internal faults (turn-to-turn (TT), line-to-ground (LG), two line-to-ground (LLG), and three line-to-ground (LLLG)) have been classified. Numerous test cases of internal fault in an ISPST have been using PSCAD/EMTDC software. These cases are formed on the basic variation of different parameters of ISPST like fault inception angle, fault resistance loading condition and percentage of winding. The accuracy of the proposed technique is evaluated over a large number of cases and it is observed that the technique gives the results with high accuracy even in presence of noise in the signal.
本文介绍了一种间接对称移相变压器(ISPST)内部故障类型检测技术。提出了一种应用模式识别网络(PRN)作为核心分类器识别内部故障类型的方法。内部故障分为四种类型:匝对匝(TT)、线对地(LG)、两线对地(LLG)和三线对地(LLLG)。许多ISPST内部故障的测试用例都使用了PSCAD/EMTDC软件。这些案例是在ISPST的故障起始角、故障电阻加载条件、绕组占比等不同参数的基本变化基础上形成的。通过大量的实例对所提出的技术的精度进行了评估,并观察到该技术即使在信号中存在噪声的情况下也能给出高精度的结果。
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引用次数: 2
Artificial neural network based wind power forecasting in belgium 基于人工神经网络的比利时风电预测
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077378
Jyothi Varanasi, M. M. Tripathi
Power generation from renewable energy sources needs great attention for future power sector to meet steadily increasing power demand and to reduce global warming. But, wind power generation is very unsure and intermittent in its nature. Wind power forecasting assists grid integration of enormous capacity wind farms to great extent. Grid stability is greatly accrued with the help of correct wind power forecasting This paper describes the suitability of NARX Artificial neural network in wind power forecasting with the historical power data accessible from European nation Belgium wind farms and meteorological information for wind speed.
为满足不断增长的电力需求和减缓全球变暖,未来电力部门需要高度重视可再生能源发电。但是,风力发电在本质上是非常不确定和间歇性的。风电预测在很大程度上有助于大容量风电场的并网。本文以欧洲国家比利时风电场的历史功率数据和风速气象资料为例,介绍了NARX人工神经网络在风电预测中的适用性。
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引用次数: 7
期刊
2016 IEEE 7th Power India International Conference (PIICON)
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