bluuebunny/crossref_metadata_2025_split huggingface dataset:
A distributed high-density resistivity meter working on a two-wire cable
Authors: Dong Xiquan , Luo Wang , Wang Hongpeng , Ge Jian , Liu Huan , Dong Haobin 
Published: February 2021

AbstractHigh-density resistivity meter is a common instrument used in shallow geophysical exploration. At present, the structure of the centralized high-density resistivity meter is bulky, while the distributed instrument needs more than 7 core cables, and the long measuring line needs to relay power supply to the intelligent electrode to provide enough voltage, so it is not convenient to use in the field. Aiming at the above problems, a new type of distributed high-density meter is developed, which can realize the power supply, communication, and measurement functions of distributed high-density meter and carry out multi-channel measurement through the time-division multiplexing of a two-wire cable and the short-time power supply of supercapacitor. Finally, the performance of the instrument was verified by experiments.
Equilibrium Model of Electricity Market Bidding Considering Incentive-based Demand Response
Authors: Zheng Yaxian , Chen Zhongyao , Shi Xinhong , Wang Gaoqin , Lin Kaiying , Wang Beibei 
Published: February 2021

Abstract
In the initial stage of electricity market construction, incentive-based demand response can effectively mitigate price spikes. Considering the overall equilibria of the market, it is of great significance to study the impact of incentive-based demand response on market clearing and participants’ behaviours. Firstly, this paper analyzes the compensation methods of incentive- based demand response and establishes an equilibrium model of day-ahead electricity market bidding that takes into account demand response. Secondly, considering the overall equilibrium conditions of the market, the overall equilibrium model of the market is established. Results show that the incentive-based demand response mechanism has a restraining effect on the generators’ bidding, and the load reduction effect is prominent when the network is congested.
Optimal utilization of load side power and heat resources based on aggregator mode
Authors: Zhu Weijiang , Cheng Xiao , Sun Lishi , Cong Lin , Wang Bing , Tian Zheng , Wang Nan 
Published: February 2021

Abstract
Combined cooling, heating and power system (CCHP) can realize the cascade utilization of energy and improve the energy utilization efficiency. Focusing on the phenomenon that the traditional self-sufficiency mode is easy to cause insufficient or excess regional energy supply, considreing the complementarity between different regional load characteristics, an internal multi-region interconnected complementary energy supply method based on aggregator mode was proposed. In order to solve the problem of uncertainty in the optimal dispatching of multiple resources in the region under the aggregator mode, an optimal dispatching model based on interval linear programming was constructed, which took the minimum operation cost of aggregator as the objective function. The feasibility and effectiveness of the method are verified by analyzing the aggregator mode in residential area, commercial area, office area and industrial area. The results show that the operation cost can be reduced and the economic benefit can be improved under the aggregator mode.
Optimization Study of Poles-slots Combination of Large Capacity Offshore HTS Wind Generator Based on Ansys Maxwell
Authors: Wang Qiong , Li Yan , Deng Guangyu , Zhang Huiyuan , Li Yueqiao , Xu Jun , Wang Xin 
Published: February 2021

Abstract
The superconducting wind turbine has the advantages of large capacity, high power density, small size, low weight, high efficiency and low cost. In the case that the rotor has many poles, how to choose the number of slots of stator is very important to the performance of the motor. This paper took 10 MW Offshore HTS Wind Generator as an example, analyzed the influence of different poles-slots combination on the performance of the generator, and finally determined a set of relatively reasonable scheme. The simulation results showed that this scheme can effectively reduce the high harmonic of no-load counter electromotive force and improve the induced voltage distortion rate and torque vibration, significantly improve the motor performance. It is of guiding significance for the structural optimization of superconducting motors.
Study on the influence of heat pump and heat storage device on the accommodation of wind power curtailment in the integrated energy system
Authors: Liu Meijie , Li Zhongwei , Wu Quanbao 
Published: February 2021

Abstract
In order to solve the wind curtailment problem in an integrated energy system (IES), this paper starts from the structure of the IES and analyzes the related contents of heat pump, heat storage device and cogeneration units in the IES. At the beginning of this article, the principle, performance coefficient model and energy efficiency curve of the heat pump are first studied. Correspondingly, the principle of heat storage device and the model of heat storage and release strategy are studied. Then the principle and operating characteristic model of cogeneration units are studied. Based on the principle of each part, combined with the operating constraint conditions of the IES, the IES including heat pump, cogeneration units and heat storage device is constructed. An example is used to simulate the operation in the Energy Plan software, different scenarios were established in the simulation process for analysis to study the influence of heat pumps on the accommodation of curtailed wind power in the IES. The simulation results show that the heat pump can promote the accommodation of wind power, reduce the curtailment rate and the cost of power generation to a certain extent in the IES. From the results of simulation analysis, it can also be concluded that the IES including both heat pump and heat storage device has better wind power accommodation capacity.
Optimization Strategy of Electric Heating with Load Regulation Ability
Authors: Wang Qing , Liu Xu , Liu Song , Lin Zhongyu , Chen Yang , Li Congcong 
Published: February 2021

Abstract
In recent years, more and more users choose electric heating to replace traditional centralized heating mode in the northern area. The flexibility of electric heating, the energy consumption characteristics of buildings, the regulation ability of users and Time-of-Use (TOU) electricity tariff give much possibility to optimize the output power strategy of electric heaters. The existing electric heating control system, where the suitable working temperature is usually used as the only set value for human life and working environment, leads to unnecessary energy consumption in some low heat demand area.
This paper, focused on a commercial used building in Shandong province, takes different heating demand characteristics into consideration, establishes electric heating load model and analyses each load’s regulation ability. Six distributed electric heaters are installed in the building, with one room equipped with one electric heater. The heater is modelled based on the parameters and output power characteristics. For the building itself, the energy consumption characteristics and thermal inertia are also analysed and presented.
A Control System of Cell Electroporation induced by Double Nanosecond Pulsed Electric Field
Authors: Peng Hao , Zhang Lin , Liu Xin , Guo Fei 
Published: February 2021

Abstract
A feedback linearization control system, which is used to study and analyze cell electroporation induced by double nanosecond pulsed electric field, is proposed in this paper. Then the effects of the control system which controls the process of electroporation induced by unipolar or bipolar double pulse are investigated to achieve controllability of electroporation. The simulation results show that the output of the control system, namely, the transmembrane potential can reach a stable value of 0.78 (-0.78)V, the radius increases linearly from 0.86nm to 0.88nm and the pore density increases linearly to 2.072×108m−2 (2.077×108m−2) when the input of the control system, the expected transmembrane potential is set to 0.79 (-0.79) V, and these results are in well agreement with the simulation result obtained by computing the related equations of electroporation, demonstrating that the control system developed in study can well regulate cell electroporation under the action of double nanosecond pulsed electric field. Overall, the control system can help the researcher to obtain the corresponding output electroporation parameters by directly inputting the expected transmembrane potential.
Optimal Computation of Small Hydropower Cluster Generation Based on River Topology
Authors: Chen Lili , Zhang Meiyan , Shen Xudong , Li Haitao , Peng Xuehu 
Published: February 2021

Abstract
Small scale hydro-power (SHP) is clean, renewable, low-carbon and it is much more environmental protection than lager scale hydro-power. In remote mountainous regions with abundant water resources, adjacent small hydropower plants (SHPP) are usually clustered to send out the electrical power. However, the power output of a SHPP varies with the changes of water flow which brings challenges for both the reliability of power systems and power grid planning. Moreover, the generation state of SHPP upstream will also cause the change of water flow downstream, which make the problem more complex. This paper proposes a method to reach the optimal generation of SHP cluster, considering the mutual influence of SHPP in the river system. The co-relation of water flow between different SHPPs is quantified based on river topology analysis. The classical genetic algorithm (GA) is used to compute the problem. A realistic system in Southeast China is studied to illustrate the feasibility of the proposed method.
Low-power LDO Design of High-efficiency Class AB OTA Based on Adaptive Biasing
Authors: Yang Hao , Huang Shengming , Duan Quanzhen 
Published: February 2021

Abstract
This design proposes a new low-dropout linear regulator (LDO) with low input voltage and low standby power consumption. A new type of adaptive bias circuit is proposed, which uses a high-efficiency class AB OTA based on class AB differential input stage and local common mode feedback (LCMFB), which not only increases the gain bandwidth product (GBW), but also improves current efficiency, in addition, a dynamic charging transistor (DCT) is used to enhance the transient characteristics of the circuit. The circuit design uses 0.18μm standard CMOS technology to achieve a stable output of 1.0V after the power supply voltage is adjusted from 1.2V, and the maximum output current is 100mA. The quiescent current is only 2.3μA at no-load, when the load current is converted from 1mA to 100mA within 1μs, the overcharge voltage is less than 130mV, and the full range of load current stability from 1mA to 100mA is achieved under the maximum 100pF load capacitor.
Reliability Modeling and Analysis of Reactor Protect System Based on Petri Net
Authors: Zhang Dongliang , Zhang Kaiwen , Wang Liufeng , Hong Qinqin 
Published: February 2021

Abstract
Digital control is an inevitable trend in the development of nuclear power. The application of digital control systems in nuclear power plants not only improves the control capability of nuclear power plants, but also increases the complexity of the system. Traditional reliability analysis methods (such as event trees and fault trees) can only perform static analysis on the reactor protection system, but cannot reflect the impact of maintenance activities on system reliability. In the dynamic analysis method, the Markov model is usually applied to the exponential distribution, and the failure and maintenance process of the reactor protection system does not all obey the exponential distribution. In this paper, the Petri net method is used to model the reactor protection system, and the modules are modeled separately according to the function of the system, and finally the model is integrated. Modularization improves the flexibility and understandability of the model, shortens modeling time, and improves robustness. The proposed model was simulated using the GPenSIM tool, and the state reachability diagram of the system with or without maintenance process was obtained, and the probability of shutdown and refusal was obtained.
SoC-Based Dynamic Droop Control for Battery Energy Storage Systems in DC Microgrids Feeding CPLs
Authors: Wang Jianmin 
Published: February 2021

Abstract
In this paper, a dynamic state-of-charge (SoC)-based droop control and bus voltage stabilization strategy has been proposed for battery energy storage systems (BESSs) feeding constant power loads (CPLs). Firstly, a SoC-based dynamic droop control is proposed to realize proportional distribution of power. Secondly, a dynamic average consensus (DAC) algorithm is adopted to ensure that all SoC converge to the same value simultaneously. Thirdly, a nonlinear disturbance observer (NDO) and a backstepping controller are integrated to stabilize the DC bus voltage. In this way, the rapid voltage recovery and power distribution are obtained when droop coefficient is time-varying. Simulation results verify the feasibility and effectiveness of the proposed control strategy.
A Two-Stage Detection Method of Rigid Pantograph Catenary Contact Points Using DCNNS
Authors: Zheng Danyang , Lu Xuemin , Quan Wei , Peng Yuchen , Liu Yueping , Chen Jim X. 
Published: February 2021

Abstract
Pantograph catenary contact point is an important monitoring object during pantograph catenary operation, which reflects the state of pantograph catenary operation. However, due to the relatively small contact area of the target area, it is still a challenge to locate the contact point quickly and accurately. Therefore, we propose a two-stage detection method of rigid pantograph catenary contact points based on deep convolution neural network. Firstly, yolov3 network is used to locate the pantograph catenary contact part, which can obtain the target area including contact points. Then, four key points generated by the intersection of rigid pantograph and catenary can be obtained by using the key point detection network in the target area. Finally, the positioning of pantograph catenary contact points is obtained by geometric calculation. The experimental results on the railway operation data set collected by the traction Laboratory of Southwest Jiaotong University show the effectiveness of the method.
Research on Fixed Separated Low Voltage Switchgear Based on Electronic Sensing Technology
Authors: Shen Qianwei 
Published: February 2021

Abstract
In order to solve the problem of poor accuracy of traditional partial discharge identification methods for switchgear, this study introduces the control principle of single chip microcomputer and designs a new partial discharge identification method for switchgear. Firstly, the partial discharge characteristic data of the switch cabinet are collected to detect the operation state of the switch cabinet and the abnormal values therein. Then, according to the acquisition results, the characteristic types of partial discharge in the switch cabinet are judged, thus realizing the identification of partial discharge in the switch cabinet. The simulation results show that the recognition method has high recognition accuracy and the recognition process takes less time, which proves that the method is practical and reliable.
Multi-keyword Cipher-text Retrieval Method for Smart Grid Edge Computing*
Authors: Zhu Jing , Wu Tao , Li Jintao , Liu Yanbin , Jiang Qixin 
Published: February 2021

Abstract
With the continuous deepening of China's power grid intelligent upgrading and the rise of edge computing technology, power grid terminals can carry out data storage and intelligent calculation at the edge of the power grid. However, the generated data by users may cause the leakage of user privacy information. The power grid edge system can retrieve the user's electricity data on demand, so as to improve the level of privacy protection and reduce the demand of transmission and computing resources through the localized storage of data. Therefore, how to carry out privacy protection and on-demand retrieval is a key problem to realize the intelligent power grid edge. In this paper, a multi-keyword cipher-text retrieval scheme (MCR- SGEC) for smart grid edge computing is proposed, which can achieve accurate matching of index and trap door, and has low spatial complexity. At the same time, on this basis, a multi-keyword fuzzy cipher-text retrieval method for smart grid edge computing (MFSE-SGEC) is proposed, which allows users to have spelling errors, which makes the user experience better.
Measurement and Analysis of 220kV Overhead Transmission Line Parameters
Authors: Xu Minhu , Guo Yun , Shen Yubo , Zhang Kexin , Zhang Dewen , Han Siwei , Lan Sen , Liu Heqian , Zhang Hang , Xu Chao 
Published: February 2021

Abstract
This paper introduces the items and principles of transmission line parameter test, finds out the interference factors through the detailed analysis of the field test results, and puts forward the relevant precautions.
A Low-Cost Solution for Leader-Follower Formation Control of Multi-UAV System Based on Pixhawk
Authors: Liu Xuancen , Liu Longbin , Bai Xibin , Yang Yueneng , Wu Hangjin , Zhang Shifeng 
Published: February 2021

Abstract
In recent years, cooperative multi-UAV systems have shown great performance in a variety of potential applications. Aiming at the problem of fixed-wing UAVs cooperative formation flight, this paper presents a low-cost system based on Pixhawk autopilot for keeping the shape of the formation. The kinematic relationship of a leader-follower UAV formation is established and a fuzzy PID control law is designed for the follower to maintain the expected position relative to the leader. Wireless data transmission between the leader and followers is achieved by using several radio telemetry modules. The proposed formation control system is validated by a series of successful flight experiments using 3 small-scaled UAV models, which has proven its feasibility and reliability.
Circuit Controller for PF Converter System Based on CODAC Core System
Authors: He Shiying , Huang Liansheng , Chen Xiaojiao , Wang Guanghong , Wang Zejing , Zhang Xiuqing , Zuo Ying 
Published: February 2021

Abstract
The poloidal field converter system of the International Thermonuclear Experimental reactor, which is developed, assembled, and tested by the Institute of Plasma Physics of the Chinese Academy of Sciences, uses the CODAC core system provided by ITER organization to design its control system. This paper completes the design of the circuit control system as well as realizes the transmission, state transition, and real-time control of the operating status of the poloidal field converter system to meet specific requirements for the control cycle of the control system. This paper provides solutions to some key problems, such as the state transition, real-time transmission, and operating state display, and real-time control of the converter circuit control system. The system designed by this paper has been successfully tested in the ITER PF prototype and ITER PF test platform.
Research on Multi-mode Operation Control Strategy of Feeder Flexible Interconnection in Distribution Network Based on Flexible Multi-State Switch
Authors: Zhou Xueting , Yang Wanli , Luo Yulan 
Published: February 2021

Abstract
Aiming at the problems of multi-mode operation and switching, unbalanced feeder load and heavy load of main transformer in flexible interconnection system of distribution network based on Flexible Multi-State Switch(FMSS), a multi-mode operation control strategy of feeder interconnection in distribution network based on Virtual Synchronous Generator (VSG) is proposed,which includes load balancing control strategy and heavy load main transformer automatic control strategy. Firstly, according to the feeder and main transformer load status, the operation mode of system is divided.Then, through the analysis power transmission and switching logic of different operating mode, active power control instructions of FMSS under multi-mode operation are obtained. So that multi-mode stable operation and free switching of the system, the feeder load balancing and main transformer heavy load automatic regulation are realized. In addition, there is no need for control strategy switching. Simulation verifies the rationality and effectiveness of the proposed control strategy.
Coordinated Control Strategy Research of Multi-terminal Cascaded Hybrid HVDC System
Authors: Lin Chang , Zhou Jiapei , Zeng Rui , Li Baohong , Jiang Qin 
Published: February 2021

Abstract
The multi-terminal cascaded hybrid HVDC system is proposed in recent years and it will be put into reality in near future. This paper investigates its control characteristics when MMCs are in master-slave strategy, and the coordinated control improving system stability is also proposed. It is found that the MMC inverter in constant DC voltage control would become a rectifier when fault happens. To solve such problem, the active power reference is immediately adjusted once the fault occurs, such that the DC side operation and AC side voltage stability can both be improved. Nevertheless, the proposed control strategy can also alleviate the large fluctuations in fault recovery process, so that the system can steadily return to original operation point. The simulation results in PSCAD/EMTDC verify the effectiveness of the proposed coordinated control strategy.
Research on Intelligent Recognition and Control Device of Aviation Line Number
Authors: Zhao Changfu , Cao Guohua , Ding Hongchang , Zhang Ying , Hou Han 
Published: February 2021

Abstract
In order to solve the problems such as low sorting efficiency, high error rate and inability to match the corresponding installation position on aviation wiring, we propose a machine vision line number recognition method, which is based on the threshold segmentation algorithm of gradation histogram to identify the line number and index the recognized results. The wire harness recognition system mainly includes three parts: wire number positioning, wire number character segmentation and character recognition. Experimental results show that the online detection speed of the vision system is 30m/min, the accuracy rate is higher than 98% and the average time is 0.04s. By matching the recognition results, index to the position where the wiring harness is to be installed to meet the requirements of aviation wiring.
Research on Single Event Effects of Ethernet MAC Controller on Manned Spacecraft
Authors: Bo Zhu , Jialiang Li , Hongxiang Chen , Shijia Wang , Xin’an Qiu , Mingyu Cheng , Jiagao Xia , Jiaqi Gao 
Published: February 2021

Abstract
In order to realize higher speed and large flow network communication on the new manned spacecraft independently developed in China, it is necessary to apply Ethernet technology. Considering the cost and application prospect, it is planned to use industrial Ethernet control chip. So it is necessary to verify whether it can meet the special requirements of the space environment. According to the space environment of the manned spacecraft design orbit, and the sensitive characteristics of the Ethernet controller chip itself, it is necessary to focus on verifying its single-particle effect. This paper introduces in detail the single-event effect of the Ethernet controller in China for the first time. The Bi-ion and Kr ions of the HIRFL cyclotron are used to carry out the single-event effect on the KSZ8851-16MLLJ Ethernet MAC controller produced by MICREL. The evaluation test, including the single-particle test design, hardware platform, software functions and test data, finally gave the test conclusion.