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Journal of Modern Power Systems and Clean Energy 2020年第1期8卷 150-158页

作者： Hao Tian Yutian Liu Dong Yang xiaohui qin Yantao Zhang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinanChina State Grid Shandong Electric Power Research Institute JinanChina China Electric Power Research Institute BeijingChina

The voltage characteristics of a half-wavelength transmission(HWLT)system lack mechanism explanation and systematic *** this paper,both the steady-state and fault voltage characteristics are analyzed and explained based on the wave process *** analysis model is established for HWLT lines and wave propagation equations with different terminal conditions are *** steady-state conditions,voltage profiles along HWLT lines are depicted and partial overvoltage occurs when there is an overload or low-power *** addition,fault voltage characteristics are analyzed under load-rejection or short-circuit *** series resonance overvoltage will happen when short-circuit faults occur at certain positions and its peak value is influenced by grid strength or fault ***,a refined transmission line model is presented to consider non-ideal factors and simulation results demonstrate that geomorphic conditions and electromagnetic environments influence line voltage characteristics to a certain extent.

关键词： Half-wavelength transmission wave process method steady-state voltage fault voltage non-ideal factor

Fast frequency response of inverter-based resources and its impact on system frequency characteristics

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Global Energy Interconnection 2020年第5期3卷 475-485页

作者： Lining Su xiaohui qin Shang Zhang Yantao Zhang Yilang Jiang Yi Han China Electric Power Research Institute Haidian DistrictBeijing 100192P.R.China

The inertia response and primary frequency regulation capability of synchronous grids are declining owing to the increasing penetration of inverter-based resources. The fast frequency response(FFR) of inverter-based resources is an important mitigation option for maintaining grid security under the conditions of low inertia and insufficient primary frequency response capability. However, the understanding and technical characteristics of the FFR of inverter-based resources are still unclear. Aiming at solving the aforementioned problems, this paper proposes a definition for FFR based on the impact mechanism of FFR on system frequency. The performance requirements of FFR are clarified. Then, the effects of FFR on system frequency characteristics are further analyzed based on steady-state frequency deviation, the initial rate of change of frequency, and the maximum transient frequency deviation. Finally, the system requirements for FFR and its application effects are verified by simulating an actual bulk power grid, providing technical support for subsequent engineering application.

关键词： Fast frequency response Rate of change of frequency Frequency deviation ROCOF-based FFR Deviation-based FFR

Aspects of ultra-high voltage half-wavelength power transmission technology

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Global Energy Interconnection 2018年第1期1卷 96-102页

作者： Yutian Liu Hao Tian Zhengzhong Liu xiaohui qin Collaborative Innovation Center for Global Energy Interconnection of Shandong Province (Shandong University) China Electric Power Research Institute

The necessity of large-scale and long-distance power transmission in future energy development is analyzed and some application scenarios of ultra-high voltage(UHV) half-wavelength transmission(HWLT) system are presented in the paper. Steady state and transient characteristics of half-wavelength transmission lines are reviewed in detail. The characteristics of UHV HWLT are very different from those of conventional UHV transmission mode, especially the overvoltage problem. To analyze the particularity and key techniques of UHV HWLT, current research results are summarized from simulation method, steady-state voltage control, relay protection, tuning network, secondary arc and overvoltage suppression, economic evaluation and engineering design. Some future research directions are also briefly addressed.

关键词： Global Energy Interconnection Half-wavelength Ultra-high voltage transmission Power system

Simulation and analysis of UHV half wavelength and DC hybrid transmission system

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Global Energy Interconnection 2018年第3期1卷 366-375页

作者： Qianyu Zhao Shouxiang Wang xiaohui qin Seyedamirabbas Mousavian Lei Wu Tianjin University Key Laboratory of Smart Grid of Ministry of Education China Electric Power Research Institute School of Business Clarkson University Department of Electrical and Computer Engineering Clarkson University

The scenarios of a half wavelength transmission line(HWTL) connected to the original DC asynchronous interconnection system are established based on the quasi-steady state model of HWTL, which include single or double loops of single channel and multi-channel scenarios with different starting and landing points. Firstly, the steady state power flow characters of multi-scenario transmission schemes are studied. The voltage distribution characters of HWTL are analyzed when its transmission power and power factor vary, and the influence of the DC power variation on voltage of HWTL is discussed. Then the transient characters of HWDHTS are explored. The DC commutation failure caused by the fault of HWTL is simulated and the power transfer capacity of HWTL while DC blocking is calculated in this paper.

关键词： UHV half-wavelength AC power transmission line UHV DC system Steady state characters Transient stability

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Study on the Application of UHVDC Hierarchical Connection Mode to Multi-infeed HVDC System

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中国电机工程学报 2013年第10期33卷 I0001-I0026,25页

作者： LIU Zhenya qin xiaohui ZHAO Liang ZHAO qingbo State Grid Corporation of China China Electric Power Research Institute

随着我国特高压交直流技术的广泛应用，多馈入直流集中落入受端负荷中心将是未来我国电网发展所面临的重要问题。为从电网结构上有效解决多馈入直流系统的问题，提出一种特高压直流分层接入交流电网的方式。研究分层接入方式直流多馈入... 详细信息

随着我国特高压交直流技术的广泛应用，多馈入直流集中落入受端负荷中心将是未来我国电网发展所面临的重要问题。为从电网结构上有效解决多馈入直流系统的问题，提出一种特高压直流分层接入交流电网的方式。研究分层接入方式直流多馈入短路比计算方法的适用性，从理论上对比特高压直流不同接入方式下多馈入直流电网的系统特性，证明特高压直流分层接入方式有助于提高多馈入直流系统的电压支撑能力，引导潮流在1000kV与500kV层级间合理分布。结合国家电网规划，仿真验证了特高压直流分层接入方式的优势。

关键词：多馈入直流输电系统特高压直流输电连接模式应用输电技术电网发展负荷中心电网结构

Steady-state voltage-control method considering large-scale wind-power transmission using half-wavelength transmission lines

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Global Energy Interconnection 2021年第3期4卷 239-250页

作者： Hao Tian Hongzheng Liu Huan Ma Pengfei Zhang xiaohui qin Changhui Ma State Grid Shandong Electric Power Research Institute Jinan 250002ShandongP.R.China Independent Power Transmission Operator S.A. 89 Dyrrachiou str.&Kifisou 10443AthensGreece China Electric Power Research Institute Beijing 100192P.R.China

Half-wavelength transmission can transmit large-scale renewable energy over very long *** paper proposes an improved steady-state voltage-control method for half-wavelength transmission systems considering largescale wind-power ***,the unique voltage characteristics of half-wavelength lines are deduced based on the distributed parameter *** the secondary voltage-control level,reactive power-transmission limits of half-wavelength lines are introduced as another control objective except for tracing the pilot bus voltage *** the uncertainty and fluctuation of wind power,the overvoltage risk-assessment method of half-wavelength lines is presented to determine specific voltage-control *** results demonstrate that the proposed voltage-control method delivers superior tracking performance according to a voltage reference value and prevents the overvoltage risk of halfwavelength lines effectively in different wind-power penetrations.

关键词： Half-wavelength lines Secondary voltage control Wind-power transmission Reactive power regulation

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一种新的二次电缆屏蔽层接地方法

电力系统自动化 2007年第16期31卷 87-91页

作者：黄少锋秦晓辉华北电力大学电力系统保护与动态安全监控教育部重点实验室北京市102206

提出一种新的二次电缆屏蔽层接地方法,即在开关场的一端经适当电阻接地,位于控制室的另一端直接接地。就不同电磁干扰耦合方式下二次电缆屏蔽层采用新型接地方法和传统接地方法时的抗干扰效果进行了分析比较,并对较为复杂的感性耦合方... 详细信息

提出一种新的二次电缆屏蔽层接地方法,即在开关场的一端经适当电阻接地,位于控制室的另一端直接接地。就不同电磁干扰耦合方式下二次电缆屏蔽层采用新型接地方法和传统接地方法时的抗干扰效果进行了分析比较,并对较为复杂的感性耦合方式进行了着重分析,发现采用新方法可以获得较好的电磁兼容效果,并可有效解决因地电流过大而可能烧毁屏蔽层的问题。

关键词：二次电缆屏蔽层接地电磁兼容感性耦合

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基于碳交易的已存供应链物流网络优化研究

计算机应用研究 2017年第5期34卷 1374-1378页

作者：秦小辉广西民族大学商学院南宁530006

针对碳交易环境下的已存供应链物流网络优化问题,提出了一个混合整数线性规划模型。该模型综合考虑了已存工厂/物流中心的关闭或继续开设,新增候选工厂/物流中心,以包含供应链运营成本和碳交易成本在内的总成本最小化为目标,设计了数据... 详细信息

针对碳交易环境下的已存供应链物流网络优化问题,提出了一个混合整数线性规划模型。该模型综合考虑了已存工厂/物流中心的关闭或继续开设,新增候选工厂/物流中心,以包含供应链运营成本和碳交易成本在内的总成本最小化为目标,设计了数据生成准则,在Java中调用Cplex求解,通过算例验证了模型的有效性和求解方法的可行性。最后灵敏度分析为决策制定者提供了一些有意义的启示:较高的单位碳交易价格将迫使企业增加运营成本以降低实际碳排放量,那些注重碳减排的优秀企业将从碳交易中获得收益;碳排放配额不会对供应链运营产生影响,也不会改变供应链的实际碳排放量,但较低的碳排放配额会增加企业的碳交易成本,从而增加供应链的总成本。

关键词：低碳供应链设施选址网络设计碳交易

基于技术升级与选择决策的供应链物流网络再设计

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计算机应用研究 2018年第12期35卷 3729-3732页

作者：秦小辉广西民族大学商学院南宁530006

基于技术升级与选择决策在供应链物流网络再设计中的重要性,综合考虑已存工厂/物流中心的关闭或继续开设与技术升级、候选工厂/物流中心的选址与技术选择以及流量分配的联合决策,以包含已存供应链技术升级与选择成本在内的总成本最小化... 详细信息

基于技术升级与选择决策在供应链物流网络再设计中的重要性,综合考虑已存工厂/物流中心的关闭或继续开设与技术升级、候选工厂/物流中心的选址与技术选择以及流量分配的联合决策,以包含已存供应链技术升级与选择成本在内的总成本最小化为目标,建立了基于技术升级与选择决策的供应链物流网络再设计模型,随后设计了数据生成准则,在Java中调用Cplex求解,通过算例验证了模型的有效性和求解方法的可行性。最后灵敏度分析为决策制定者提供了有意义的启示:供应链中因关闭设施获得的收益越高,越有利于促进产业转移,较低的技术升级成本则有利于促进产业的转型升级。

关键词：物流网络网络设计技术升级灵敏度分析再设计

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特高压同步电网安全性论证

电网技术 2016年第1期40卷 97-104页

作者：汤涌郭强周勤勇覃琴秦晓辉中国电力科学研究院北京市海淀区100192

根据《电力系统安全稳定导则》,从短路电流、静态安全性、暂态稳定性、动态稳定性等方面,校核了特高压同步电网方案的安全稳定性;根据《电力安全事故应急处置和调查处理条例》要求,校核了可能发生的自然灾害导致的电网严重故障下,特高... 详细信息

根据《电力系统安全稳定导则》,从短路电流、静态安全性、暂态稳定性、动态稳定性等方面,校核了特高压同步电网方案的安全稳定性;根据《电力安全事故应急处置和调查处理条例》要求,校核了可能发生的自然灾害导致的电网严重故障下,特高压同步电网的承受能力及可采取的措施;根据第3道防线的设置原则和要求,分析了由低频减载、低压减载和解列控制构成的第3道防线在特高压同步电网的适应性。结果表明,特高压同步电网安全性满足《电力系统安全稳定导则》的要求,承受严重故障能力强,第3道防线可有效控制事故范围,避免出现大停电;采用基于广域同步量测信息的自适应解列、交直流协调控制等技术可以进一步提高系统的安全性。

关键词：安全稳定特高压同步电网三道防线