Application of Network Information Communication Technology in Power System

Network information communication technology in power systems is the key to ensuring the safe and efficient operation of power grids.The network information communication technology itself has advantages in automation operation and information transmission,thus is widely applied to the power system.In the case of ensuring that the power system is compatible with the network information communication technology,the control of the power system can be strengthened,and the operational efficiency of the power system can be improved.This paper mainly analyzes the specific application of network information communication technology in power system.

Discussion on the Integrated Communication System of Local Electric Power Network in China

This paper describes current situation and special requirements of local electric power communication network in China. The paper discusses the disadvantages of SDH and fiber loop carrier system applied to electric power communication network. It presents a new Communication System-IDS-2000 integrated digital communication system. The paper introduces the characteristics and application of IDS-2000 system in the local electric power communication network.

Design of Power Communication Data Network Management System and Implementation of Data Acquisition Module

The power communication network is a separate network from the power grid whose primary purpose is to ensure the power grid's safe operation.This paper expounds the composition of the comprehensive network management architecture of the power communication data network and the implementation of the data acquisition module in the network management system through theoretical analysis,for the reference of relevant personnel,in order to better promote the collection of power grid communication network data.

Create Your Own Data and Energy Integrated Communication Network:A Brief Tutorial and a Prototype System

In order to satisfy the ever-increasing energy appetite of the massive battery-powered and batteryless communication devices,radio frequency(RF)signals have been relied upon for transferring wireless power to them.The joint coordination of wireless power transfer(WPT)and wireless information transfer(WIT)yields simultaneous wireless information and power transfer(SWIPT)as well as data and energy integrated communication network(DEIN).However,as a promising technique,few efforts are invested in the hardware implementation of DEIN.In order to make DEIN a reality,this paper focuses on hardware implementation of a DEIN.It firstly provides a brief tutorial on SWIPT,while summarising the latest hardware design of WPT transceiver and the existing commercial solutions.Then,a prototype design in DEIN with full protocol stack is elaborated,followed by its performance evaluation.

Analysis of Causes and Actual Events on Electric Power Infrastructure Impacted by Cyber Attack

With the development of electric power technology, information technology and military technology, the impact of cyber attack on electric power infrastructure has increasingly become a hot spot issue which calls both domestic and foreign attention. First, main reasons of the impact on power infrastructure caused by cyber attack are analyzed from the following two aspects: 1) The dependence of electric power infrastructure on information infrastructure makes cyber attack issues in information field likely to affect electric power field. 2) As regards to the potential threat sources, it will be considerably profitable to launch cyber attacks on electric power infrastructure. On this basis, this paper gives a classified elaboration on the characteristics and the possibilities of cyber attacks on electrical infrastructures. Finally, the recently published actual events of cyber attacks in respect of threat sources, vulnerabilities and assaulting modes are analyzed and summarized.

Application of artificial neural network and information theory to detection of insulators

Information theory is used to obtain the information gain for each identification feature, and this gain is used as the weight factor for this feature to stress the role of effective feature, and the ART model based on artificial neural network theory is then used for identification thereby forming the detection system for poor insulators. Exper iments and calculations show this approach is correct and feasible.

Wireless Power Generation Strategy Using EAP Actuated Energy Harvester for Marine Information Acquisition

The energy of a radio wave is reduced through the dispersion, the refraction and the absorption because the medium transferring the vibration of a radio wave is the seawater. In the end the reduced energy of a radio wave causes the reduced transmitting length for communication, the long postponed communication and the frequent error. The subsea communication for the marine environment monitoring which must overcome the weak points of the RF wave and the most practical method for the marine sensor network realization is to use the acoustic wave method, but the energy consumption rate of the acoustic wave communication method is about 100 times greater than the one of the RF wave method. So, the power supply of the sensor node in the marine sensor network system is the most important interest field. In this study, the sample which consists of an acrylic elastomer(VHB4905 film from 3M), conductible carbon grease(from MG chemical) and electric wire for the basic study of an energy harvesting strategy and technique using EAP actuator was fabricated, and the conductible carbon grease was used for an electrode. The characteristics of the fabricated sample were analyzed through the experiment. We also mixed carbon grease with aluminum powder for conductibility improvement, and the effect of the mixed electrode was confirmed through the conductivity measurement.

An Overview of SWIPT Circuits and Systems

From a circuit implementation perspective,this paper presents a brief overview of simultaneous wireless information and power transmission(SWIPT).By using zero-power batteryless wireless sensors,SWIPT mixes wireless power transmission with wireless communications to allow the truly practical implementation of the Internet of Things as well as many other applications.In this paper,technical backgrounds,problem formation,state-of-the-art solutions,circuit implementation examples,and system integrations of SWIPT are presented.

“人-车-桩-路-网”深度耦合下的配电网协同规划与运行优化

电动汽车(EV)作为连接交通电气化和电网清洁化的纽带和桥梁,可实现电力-交通-信息之间的深度耦合,形成电力-交通一体化的规划及运行架构。配电-交通融合系统(DTIS)中,EV充放电行为多时空动态交织、电能流-交通流-信息流深度融合、多利益主体动态博弈等大量不确定性因素使配电网的规划及运行优化的边界都将发生重大转变,但同时也给挖掘利用EV的移动储能特性和提升配电网灵活性带来了契机。为此,在分析“人-车-桩-路-网”深度耦合下配电网的形态演化特征基础上,剖析了新形态下配电网协同规划与运行优化所面临的新挑战,进而针对“人-车-桩-路-网”耦合下的EV灵活性建模、灵活域高效构建及预测、协同规划、运行优化4个方面关键技术展开讨论,并对相关技术问题的研究方向进行了展望。

市域D城际动车调试试验台的设计与试验

160 km/h动力集中动车组安全舒适、编组灵活,是我国现有普速线路上运营的主型车。目前动车组出厂前是通过连接车端的简易工装完成测试工作,测试结果通过人工在纸质文件上进行记录,数据不能自动保存且无法保证数据的客观准确性和可追溯性。采用SpringBoot+Vue框架和基于arm的嵌入式技术设计了一套智能调试试验台,通过软件控制模拟连挂车辆的IO测试信号,完成车端硬线信号测试;通过模拟车电信息集中单元,采集并解析以太网数据对硬线信号辅以网络状态判定,实现车辆出厂前的全部单车试验,同时能够进行调试数据的存档、查询和自动生成测试报告等功能。通过对某主机厂的160动车进行实测,调试效率大大提升,调试数据实时保存,是列车调试阶段数字化改革和创新的重要尝试,同时对高铁、城轨车辆的单车调试具有重要的借鉴意义。

基于电力公用信息模型的配电网储能优化配置

新型电力系统储能建设是提升分布式新能源消纳、改善电能质量的有效手段,现有储能规划研究未能充分利用实际配电自动化系统的可用信息,配置结果难以应用于实际电网。针对这一问题,提出了一种基于电力公用信息模型(CIM/e)的储能优化配置方法。首先,提出CIM/XML的数据解析方法,实现实际配电网的拓扑识别和潮流模型重构;其次,建立计及经济性与电能质量指标、内嵌潮流约束的储能优化配置模型,实现系统运行和规划的一体化设计,给出新增储能布点和容量的优化配置结果;最后,在中国南方地区两个不同电压等级的实际配电系统进行仿真实验,验证了所提方法的有效性。

电力设备的红外图像故障区域分割方法

电力设备故障红外图像区域分割是电力设备故障处理与分析的基础步骤。针对区域生长法分割适应性弱,导致分割准确性低的问题,文中提出以温度最高点为种子点,并且引入类间方差函数对生长阈值进行优选的改进区域生长方法,有效提高故障区域分割的准确性。通过改进方法与其他方法的对比实验,结果表明:文中所提出的方法准确率高于传统方法23.94%。所提出的改进区域生长法有效提高了电力设备的红外图像故障区域分割准确性。

电力市场中Bertrand模型的复杂性分析

为了模拟电力市场中发电商采取不同策略的博弈行为,在考虑输电网约束条件下将动态Bertrand博弈模型引入电力市场,建立有限理性条件下的投资模型,并运用有限理性法和不完全信息法实现了投资模型由静态到动态的转化过程,求解了动态模型的价格均衡,并分析了均衡点的稳定状态,给出其经济解释。

基于GRA/EEMD-Informer混合模型的光储直柔配电系统多数据预测方法

针对现有时间序列模型预测光储直柔配电系统短期发用电数据精度不高的问题,提出一种基于灰色关联度分析/集合经验模态分解(grey relation analysis,ensemble empirical mode decomposition,GRA/EEMD-Informer)的光储直柔配电系统多数据预测模型,通过灰色关联度分析、模态分解,结合自注意力蒸馏机制,有效捕捉输出和输入之间较精确的长程相关性耦合,降低了时空复杂度,极大缓解了传统编解码的局限性。将已建成并投入使用的光伏发电站某月数据、典型办公建筑某月电力数据及电动汽车充电站运行数据作为原始数据,以均方误差、平均绝对误差、均方根误差作为评价指标对模型进行检验,并进行消融实验与分析,最后与长短期记忆网络(long short-term memory,LSTM)、基于粒子群优化(particle swarm optimization,PSO)算法的长短期记忆网络(PSO-LSTM)、Transformer时间序列预测方法对比,结果表明该方法的拟合程度明显高于其他预测方法,验证了GRA/EEMDInformer算法对提高预测能力的有效性和实用性。

基于云计算的电力智能信息数据网架构研究

为提供低时延、动态化的差异化服务,满足用户需求,提出云计算背景下电力智能信息数据网架构设计方案。数据网集合电网数据预测和业务网两部分,数据预测参考分类最大负荷、总负荷、分类电量和总电量4类预测量,选取1个作为预测起点,计算得到另外3个值,以并行的方式完成信息整理和负荷预测;业务网以业务实现层、软件定义层、基础资源层3个层次间的相互辅助,为数据网提供高效的数据转换与调用。仿真实验表明,所设计电力数据网得出的负荷值与真实值拟合程度高、均衡负载效果好,能够同时容纳更多的用户,方便工作人员智能操作。

基于粒子群算法的新能源微电网局部停电负荷调度研究

新能源微电网的停电负荷具有灵活而易于控制管理的特点。将停电负荷积极参与到微电网调度计划中,可有效提高微电网运行的稳定性。提出基于粒子群算法的新能源微电网局部停电负荷调度方法。构建用电信息采集模块,完成新能源微电网运行信息的采集,根据新能源微电网的实际运行情况,将NTP协议应用在信息采集系统中,实现数据的同步更新;构建局部停电负荷调度双层模型,并采用粒子群算法求解模型,实现新能源微电网局部停电负荷调度。由实验结果可知:在16:00之前风力出力持续升高,此时段设备的开机时序即生产负荷在优化后大部分向后移,说明所提方法能够充分利用风力能源,调节电网设备开机时序;调度后的新能源微电网在停电情况下,其总负荷和净负荷均有所降低,说明对微电网运行稳定性的改善效果非常显著。

基于专利数据的电力标引信息挖掘技术研究

为了提高专利数据挖掘的准确性和可靠性,针对基于专利数据的电力标引信息挖掘技术进行研究。以SIPO专利数据库为数据源,生成专利数据序列。根据词嵌入模型设计Word2Vec,获取电力专利数据关联信息。根据数据关联融合结果,通过支持向量机分别训练相应子分类器,高效融合各子分类器,构建总分类模型完成分类决策,根据最终决策获取电力专利数据标引信息挖掘结果。实验结果表明,提出的挖掘与其他挖掘法相比查准率和查全率更高,具有可靠性。

电力工程设计质量管理体系整合优化研究

分析当前电力工程设计质量管理现状,阐述了电力工程设计质量管理体系整合优化的理论基础,并对电力工程设计质量管理体系整合的框架进行了详细介绍,论文提出建立健全质量管理体系、强化过程控制与监督、加强设计人员培训与管理、改进信息技术应用以及注重客户反馈和持续改进5个实施策略。