Results 1 to 10 of about 232 (73)
Application and Prospect of Flexible Transmission and Distribution Technology in Internet Data Center [PDF]
, 2023 [Introduction] As an important thrust of China's "new infrastructure", internet data centers have ushered in opportunities for vigorous development and become new areas of energy use, putting forward higher requirements for the power supply level and ...
Deyang CHEN +7 more
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Optimization Calculation Method of Injection Voltage and Series Converter Capacity for Unified Power Flow Controller [PDF]
, 2023 [Introduction] The application of UPFC (Unified Power Flow Controller) is to increase the transmission capacity of key sections, which mainly through the injection of a certain series voltage into the system and therefore divert the power flow of target ...
Jiefeng ZHONG +4 more
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链式静止同步串联补偿器的IGBT开路故障软件诊断方法 [PDF]
全球能源互联网, 2018 链式静止同步串联补偿器以其模块化、可扩展、高压大容量的特点，在未来电网中应用前景广阔。在介绍静止同步串联补偿器调节电网潮流的原理基础之上，采用了针对链式拓扑的分层控制策略，包括系统级、装置级和模块级的控制。然后，针对链式静止同步串联补偿器常见的IGBT开路故障，提出一种软件故障诊断方法。该方法无需增加额外的测点，可作为常规硬件检测方法的补充和后备方案。最后，仿真验证了静止同步串联补偿器的控制策略和IGBT开路故障软件诊断方法的有效性。
曾洪涛 +5 more
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Summary of Desert Photovoltaic Power Transmission Technology [PDF]
To achieve carbon peaking and carbon neutrality goals and improve energy efficiency, new energy plays a major role in China strategic deployment. However, as centralized photovoltaic is located in desert areas, photovoltaic power transmission has become ...
CHU Shuai +5 more
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High Voltage Crossing Strategy of Wind Farm Considering Active and Reactive Coordinated Recovery [PDF]
ObjectivesTo address the serious high voltage ride-through (HVRT) problem faced by wind farms as a result of the large voltage surge at the grid-connected point after a DC fault, a recovery mechanism of “active priority balancing - reactive power dynamic
HAN Lu +4 more
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Gaoya dianqi, 2016 直流侧电压的稳定是保证静止同步补偿器可靠运行的关键,为了更好地研究高压大容量静止同步补偿器直流侧电压的控制方法,对静止同步补偿器直流侧电压的他励控制进行了研究。从电路拓扑结构、容量选择及控制策略等方面比较全面地分析了静止同步补偿器直流电压他励控制装置—他励装置。提出了他励装置容量的选择方法,给出了他励装置的一种控制策略;并运用PSIM软件分别对基于三相VSI的静止同步补偿器直流电压的自励控制和他励控制进行了系统仿真,仿真结果表明,直流电压的他励控制对稳定直流侧电压及抑制动态电压波动具有良好的优越性 ...
杜严行
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Gaoya dianqi, 2008 静止无功补偿器（SVC）用于负荷补偿时,补偿导纳的计算对其补偿性能有着重要的影响。笔者提出了一种基于改进的同步旋转参考坐标变换的补偿电纳计算方法。该方法利用电网电压中的一相电压构造虚拟的对称三相系统,由其形成的合成矢量作为同步旋转坐标系中的d轴,将负载电流矢量投影到电网电压矢量上,通过低通滤波器后便可得到正序电流和负序电流,由此可以准确计算所需的补偿电纳。该方法计算简单,基于该法的静止无功补偿器不需要硬件锁相环,能够快速、准确地补偿负荷的无功功率,维持电网电压的稳定 ...
盘宏斌, 张佳佳, 肖业伟, 刘勇
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Gaoya dianqi, 2015 笔者设计了一种基于双DSP结构的三相四线制配电网静止同步补偿器（D-STATCOM）,一个DSP负责采样、核心算法、SVPWM输出,另一个DSP负责外围监控与通讯,减小了处理器各自的负担,提高了实时响应速度。同时双DSP均具有保护功能,实现了保护功能的冗余设计,增加了设备运行的可靠性。通过dq变换,得到电网所需的无功电流,采用前馈解耦控制,实现了对无功电流的无稳态误差补偿;通过采样、三角波载波、PWM输出方式,实现了对零线电流的跟踪补偿。最后通过MATLAB仿真和50 kvar样机试验 ...
李平 +4 more
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Gaoya dianqi, 2019 运行经验表明,双馈风机（doubly fed induction generator,DFIG）经串联补偿线路外送系统存在发生次同步振荡（subsynchronous oscillation,SSO）的风险。文中给出了由静止同步串联补偿器（static synchronous series compensator,SSSC）和固定电容器组成的混合串补装置结构及控制策略,设计了串联型柔性交流输电装置次同步频段阻抗特性仿真测试方法,并分析了SSSC的次同步频段阻抗特性及DFIG经混合串补外送系统的SSO特性。
朱鑫要 +5 more
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Gaoya dianqi, 2010 针对低压配电系统或工业负荷的特点,提出一种适用于小功率静止同步补偿器（Static Synchronous Compensator,STATCOM）装置的基于电流直接控制的控制方案,并用MATLAB软件进行了仿真验证。实验采用基于DSP控制的实验平台,设计了50 kvar STATCOM实验系统。将仿真结果和实验结果对比,证明设计的可行性。通过对STATCOM进行的基波无功补偿实验和谐波与基波无功的全补偿实验,证明STATCOM的良好的无功补偿性能。
白雪飞, 顾春雷
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