Results 51 to 60 of about 2,959 (147)
Research on Reconfiguration Strategy of Distributed Distribution Network With Self-Healing Performance Under High-Proportion Renewable Energy Access [PDF]
ObjectivesAs the proportion of renewable energy in power grids increases year by year, the volatility and uncertainty of the grid are significantly heightened, posing challenges to the safe operation of distribution networks.
HUANG Yijun, WU Renbo
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Research on Fault Location in Integrated Energy Systems Based on Improved Binary Particle Swarm Optimization Algorithm [PDF]
ObjectivesThe coverage of power systems continues to expand, and the structure of integrated energy systems is becoming increasingly complex. This trend leads to a significant decline in the accuracy of fault location in the distribution network that is ...
GAO Yang +5 more
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Dianci bileiqi, 2005 通过对农村电网在实际运行中的雷害事故情况和典型事例的分析,认为线路绝缘水平低,缺少防直击雷的措施,避雷器的使用不当和接地不良,雷电过电压与内过电压的联合作用是目前农村电网雷击跳闸率居高不下的主要原因。提出了规范避雷器的安装维护,改善避雷器和杆塔接地,使用塔顶避雷针和自动消弧装置降低配电网建弧率,限制雷电流过后的弧光接地过电压和铁磁谐振过电压,降低配电网建弧率等防雷措施,可提高配电网的耐雷水平。
肖金华, 李景禄
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Gaoya dianqi, 2020 为解决智能变电站"三层两网"系统架构中过程层产品数量多,影响大,配置复杂及出现故障影响范围广等问题,对当前的智能变电站"三层两网"的架构进行分析,给出了第三代智能变电站的"两层一网"的系统架构设计。结合"两层一网"对过程层主设备就地模块关键技术进行研究,提出了一种基于"两层一网"系统架构下的第三代智能变电站的主设备就地模块设计方案,方案中的主设备就地模块替代了原过程层的合并单元、智能终端,同一次设备同体安装就地化设计。同时给出主设备就地模块的免配置方案、环网物理链路监视 ...
朱建斌 +6 more
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Optimal Configuration of Distributed Generation Considering Carbon Trading and Reactive Power Compensation [PDF]
Under the background of “double carbon”, the introduction of carbon trading and reactive power compensation mechanism in the planning of distributed generation is an important means to realize the low-carbon and stability of power system.
CHU Zhuang, SUN Jianhao
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Gaoya dianqi, 1992 由西安高压电器研究所与信阳高压开关总厂联合研制的ZW□—10/630—6.3型户外高压真空断路器于1991年12月14日在西安通过样品鉴定。 ZW□—10/630—6.3型柱上真空断路器,主要用于农网和城网的10kV配电系统,作为分合负荷电流、过载电流及短路电流之用。 断路器采用三相共箱式结构,套管进出线,配有电流互感器。真空灭弧室采用盘片中封式玻璃外壳。操动机构为手力储能弹簧机构,可进行手动、电动合分及过流脱扣。
陶琳, 魏一钧
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Gaoya dianqi, 2012 电气设备状态评价与风险评估是当前电网安全和供电可靠性研究工作的重要方向,对电气设备预期使用寿命进行评估是电网可靠性和安全评估的重要判据之一,但是目前中国有关电气设备使用寿命还未建立相关标准。配网避雷器是配网防雷保护的主要设备,广东地区雷电活动强烈,加之配网避雷器使用量大、价格便宜、准入门槛低,在设计、工艺、制造、选型、安装、运维及检测环节存在不少问题,导致运行故障率较高。笔者通过对配网避雷器故障模式和受损决定因素进行分析,提出配网避雷器预期寿命计算路线,并具体介绍评估方法、过程和计算实例 ...
彭向阳, 王保山, 彭发东, 熊易
doaj
Research on Deep Peak Shaving Performance of 1 000 MW Ultra-Supercritical Coal-Fired Boiler [PDF]
ObjectivesDeep peak regulation of coal-fired boilers is crucial to the stability of the future power system dominated by new energy, but there is a lack of performance and engineering applications on deep peak regulation of 1 000 MW ultra-supercritical ...
DING Yong
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Gaoya dianqi, 2012 超高压电网启动是一项非常复杂、谨慎的工作,它的安全启动关系着整个电网的安全,因此,必须制定合理、有效的启动方案。笔者以银川东变电站为例,介绍了银川东750 kV变电站及其联网变电站接线系统,全面分析了银川东750 kV变电站启动过程中主要遇到的空载线路合闸过电压、系统继电保护的配置及启动后750/330 kV的电磁环网问题,采取了限制空载线路合闸操作过电压,对继电保护在启动过程中的设置提出了要求,通过控制省级断面潮流等措施降低电磁环网影响。同时也提出了启动过程中应当遵守的安全防范措施 ...
闫群民, 马永翔, 刘忠文
doaj
Multi-objective Site Selection and Capacity Optimization of Distributed PV Energy Storage in Smart Distribution Network Based on Non-cooperative Game [PDF]
The disordered integration of high-penetration distributed photovoltaics (DPVs) into smart distribution networks has caused critical challenges including transformer reverse overloading and degraded power quality.
Che, Yulong +5 more
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