全部专利 发明专利 实用新型专利 外观设计专利
排序方式:
当前查询到938218条专利包含查询词 "国家电网有限公司【EN】Power Science Research Institute of Hebei Electric Power Co., Ltd." ,搜索用时0.375秒!
发明专利:310363实用新型: 509548外观设计: 118307
310363 条,当前第 1-10 条 下一页 最后一页 返回搜索页
申请号:201911139627.4 公开号:CN110867838A 主分类号:H02H7/26
摘要:【中文】本发明提供了一种基于5G通信技术的配网故障处理方法,针对现有的各种配网故障处理模式故障处理时间长、建设成本高、选择性差等缺点,利用5G通信的低延时、高带宽、传输稳定等特点,将5G通信作为故障信号传输通道,综合考虑5G通信传输延时、丢包率等技术指标,基于终端间故障信息交互传输与逻辑策略,提出可靠性高、选择性好、容错性强的配网故障处理方法,实现200毫秒内馈线故障快速定位与隔离、非故障区域自动恢复供电,实现配网故障处理分钟级向毫秒级转变,让停电区域面积更小、居民停电次数更少、来电等待时间更短,显著提高配网供电可靠性。 【EN】The invention provides a distribution network fault processing method based on 5G communication technology, aiming at the defects of long fault processing time, high construction cost, poor selectivity and the like of various existing distribution network fault processing modes, utilizing the characteristics of low delay, high bandwidth, stable transmission and the like of 5G communication, taking the 5G communication as a fault signal transmission channel, comprehensively considering the technical indexes of 5G communication transmission delay, packet loss rate and the like, providing high reliability based on fault information interactive transmission and logic strategies between terminals, the distribution network fault processing method with good selectivity and strong fault tolerance realizes rapid positioning and isolation of feeder line faults in 200 milliseconds and automatic power restoration of a non-fault area, realizes conversion from a distribution network fault processing minute level to a millisecond level, enables areas of power failure areas to be smaller, resident power failure times to be fewer, call waiting time to be shorter, and remarkably improves the reliability of distribution network power supply.
详细信息 下载全文

申请号:201911156762.X 公开号:CN110841825A 主分类号:B05B9/04
摘要:【中文】本发明涉及一种氦气真空检漏仪用氦气定量喷射装置,其包括高压氦气瓶、固定安装在高压氦气瓶瓶口的恒压装置、固定安装在恒压装置低压接口的快速排气装置以及安装在快速排气装置气室接口上的气室,本发明装置可以手动调整每次氦气的喷射量,并保证调整后每次喷射氦气量恒定,有效提高了负压系统真空检漏试验精度,可以适应不同类型、不同容量机组的真空检漏工作。 【EN】The invention relates to a helium quantitative injection device for a helium vacuum leak detector, which comprises a high-pressure helium bottle, a constant-pressure device fixedly arranged at the mouth of the high-pressure helium bottle, a quick exhaust device fixedly arranged at a low-pressure interface of the constant-pressure device and an air chamber arranged at an air chamber interface of the quick exhaust device.
详细信息 下载全文

申请号:201911157965.0 公开号:CN110910018A 主分类号:G06Q10/06
摘要:【中文】本发明涉及一种地区电网综合线损评价指标体系,其包括电网结构类指标、线变损失类指标以及变压器运行类指标;所述电网结构类指标包括电量密度和电量结构;所述线变损失类指标包括线路损耗率、变压器损耗率以及线变损比;所述变压器运行类指标包括铜铁损比和容载比。本发明还涉地区电网综合线损评价的方法。本发明的判定误差小,直观迅速,同时可以进行细部判定,提出合理的改善措施。 【EN】The invention relates to a regional power grid comprehensive line loss evaluation index system which comprises a power grid structure index, a line transformation loss index and a transformer operation index; the power grid structure indexes comprise power density and a power structure; the line variable loss indexes comprise a line loss rate, a transformer loss rate and a line variable loss ratio; the operation indexes of the transformer comprise a copper iron loss ratio and a capacity-load ratio. The invention also relates to a method for evaluating the comprehensive line loss of the regional power grid. The method has small judgment error, is visual and rapid, can perform detailed judgment at the same time, and provides reasonable improvement measures.
详细信息 下载全文

申请号:201911158950.6 公开号:CN110854807A 主分类号:H02H7/00
摘要:【中文】本发明提供了一种基于OCR技术的新能源继电保护智能校核及预警系统,包括依次连接的定值识别模块、校核参数模块和校核定值模块,定值识别模块用于基于OCR技术对继电保护定值单进行信息采集,得到标准数据格式的定值单;校核参数模块用于对各参数进行收集和校验,并构建防误机制;校核定值模块用于对定值识别模块输出的定值进行校核和预警。本发明基于OCR技术对继电保护定值单进行颗粒化信息采集,从装置源头把控定值准确性,解决了站内继电保护定值整定中存在的问题;并通过设置智能校核,实现预警功能,降低继电保护定值的安全风险,有力保障新能源高效安全地入网运行,解决了现有技术中涉网定值校核中存在的问题。 【EN】The invention provides a new energy relay protection intelligent checking and early warning system based on an OCR technology, which comprises a fixed value identification module, a checking parameter module and a checking fixed value module which are sequentially connected, wherein the fixed value identification module is used for carrying out information acquisition on a relay protection fixed value list based on the OCR technology to obtain a fixed value list in a standard data format; the checking parameter module is used for collecting and checking each parameter and constructing an anti-error mechanism; and the check constant value module is used for checking and early warning the constant value output by the constant value identification module. The method is based on OCR technology to carry out granulation information acquisition on the relay protection constant value list, and the accuracy of the control constant value is controlled from the source of the device, so that the problem existing in the setting of the relay protection constant value in the station is solved; and through setting up intelligent check, realize the early warning function, reduce the safety risk of relay protection definite value, guarantee new forms of energy high efficiency safety network access operation effectively, solved the problem that exists in the check of the net definite value of involving among the prior art.
详细信息 下载全文

申请号:201911158959.7 公开号:CN110882504A 主分类号:A62C3/16
摘要:【中文】本发明提供了一种直流电源系统蓄电池组火灾预判及灭火系统,包括远程监控层、网络通讯层、站端设备层;同时提供了一种直流电源系统蓄电池组火灾预判及灭火方法,站端设备层采集蓄电池组运行状态信息,通过网络通讯层将该信息传送至数据中心服务器,再分发到远程监控层的各远程监控终端。本发明通过实时采集蓄电池组电压、单体电压、内阻、温度、充放电电流等蓄电池组的运行状态信息,在线监测蓄电池组出口熔断器(或断路器)、充电机工作状态及可燃气体烟雾报警等信息,搭建一体化综合火灾预判及灭火系统,本发明采用多重监测手段且准确及时,能够最大限度减少火灾所造成的损失,保障直流电源系统安全、稳定地运行。 【EN】The invention provides a direct-current power supply system storage battery pack fire pre-judging and fire extinguishing system, which comprises a remote monitoring layer, a network communication layer and a station end equipment layer, wherein the remote monitoring layer is used for monitoring the fire of a storage battery pack; a station-side equipment layer collects the running state information of the storage battery pack, transmits the information to a data center server through a network communication layer, and then distributes the information to each remote monitoring terminal of a remote monitoring layer. The invention establishes an integrated comprehensive fire pre-judging and fire extinguishing system by acquiring the running state information of the storage battery pack such as the voltage, the monomer voltage, the internal resistance, the temperature, the charging and discharging current and the like of the storage battery pack in real time, monitoring the information such as a fuse (or a circuit breaker) at the outlet of the storage battery pack, the working state of a charger, a combustible gas smoke alarm and the like on line.
详细信息 下载全文

申请号:201911190328.3 公开号:CN110907848A 主分类号:G01R31/40
摘要:【中文】本发明公开了一种直流电源故障智能录波与分级告警装置,采用多片ADC并行采样,并且每片ADC均通过电容隔离技术与主CPU相连,隔离电压达到3000V,既保证高精度数据采样又保证不同分组信号之间完全隔离、互不干扰和影响;所述ADC为多核心24位高精度Sigma‑Delta模数转换器。本发明适用于直流系统异常时间段对直流电源重要数据进行针对性录制记录存储,对于母线过欠压、电池组过欠压、母线对地电压异常、交流窜入直流母线、交流过欠压、缺相、停电、电池组电流异常、波动、负荷电流波动、异常等故障情况均可启动录波,为事故分析提供有力数据支撑,并根据故障严重程度,智能分级告警。 【EN】The invention discloses an intelligent wave recording and grading warning device for direct-current power supply faults, which adopts a plurality of ADCs to sample in parallel, each ADC is connected with a main CPU through a capacitance isolation technology, and the isolation voltage reaches 3000V, thereby ensuring high-precision data sampling and ensuring complete isolation, mutual noninterference and influence among different grouped signals; the ADC is a multi-core 24-bit high-precision Sigma-Delta analog-to-digital converter. The method is suitable for performing targeted recording, recording and storing on important data of the direct current power supply in an abnormal time period of a direct current system, starting wave recording on fault conditions such as overvoltage and undervoltage of a bus, overvoltage and undervoltage of a battery pack, abnormal voltage to ground of the bus, alternating current flowing into the direct current bus, overvoltage and undervoltage of the alternating current, phase failure, power failure, abnormal current, fluctuation, load current fluctuation, abnormity and the like, providing powerful data support for accident analysis, and intelligently and hierarchically giving an alarm according to the severity of the fault.
详细信息 下载全文

申请号:201911190731.6 公开号:CN110895295A 主分类号:G01R31/00
摘要:【中文】本发明涉及一种屏蔽服效率自动测试装置,包括感应电极、发射电极、电源模块、激励电源发生器、多路电压测量模块、人机对话模块、存储模块、通讯模块和控制中心。本发明还涉及一种屏蔽服效率自动测试方法,系统流程包括初始化、登录模块、测试结果查询模块、数据测试模块、打印模块和系统设定模块。本发明所提出的测试方法及装置是一种自动化程度高、测试效率高、测量精度高、操作简单的屏蔽服测试手段。测试人员登录操作模式,实现测试数据的可追溯性。 【EN】The invention relates to an automatic testing device for the efficiency of a shielding clothes, which comprises an induction electrode, a transmitting electrode, a power supply module, an excitation power supply generator, a multi-path voltage measuring module, a man-machine conversation module, a storage module, a communication module and a control center. The invention also relates to an automatic testing method for the shielding clothes efficiency, and the system flow comprises an initialization module, a login module, a test result query module, a data testing module, a printing module and a system setting module. The test method and the test device provided by the invention are a shielding clothes test means with high automation degree, high test efficiency, high measurement precision and simple operation. And the testers log in the operation mode to realize the traceability of the test data.
详细信息 下载全文

申请号:201911198175.7 公开号:CN110907728A 主分类号:G01R31/00
摘要:【中文】本发明涉及一种改进的风电场功率控制能力并网检测方法,其通过有功功率控制能力检测和无功功率控制能力检测,综合判定风电场的功率控制能力。本发明的检测效率高、检测效果和经济性好。 【EN】The invention relates to an improved wind power plant power control capacity grid-connected detection method, which comprehensively judges the power control capacity of a wind power plant through active power control capacity detection and reactive power control capacity detection. The invention has high detection efficiency and good detection effect and economy.
详细信息 下载全文

申请号:201911216758.8 公开号:CN110912122A 主分类号:H02J3/00
摘要:【中文】本发明涉及一种电力系统安全稳定水平量化评估方法,将可进行安全稳定计算的电网运行方式数据经潮流评估和稳定评估,得到电网安全稳定水平的量化指标,根据量化指标给出评价。本发明提供一种针对电网运行中的多个限制条件,分别提出量化度量该限制的电力系统安全稳定水平量化评估方法,以明确、直观、准确地从多个维度评价该运行方式的安全稳定水平,为运行方式的调整与优化提供参考和依据。 【EN】The invention relates to a quantitative evaluation method for the safety and stability level of a power system, which is characterized in that power grid operation mode data capable of carrying out safety and stability calculation are subjected to load flow evaluation and stability evaluation to obtain quantitative indexes of the safety and stability level of a power grid, and evaluation is given according to the quantitative indexes. The invention provides a quantitative evaluation method for the safety and stability level of a power system, which aims at a plurality of limiting conditions in the operation of a power grid and respectively provides quantitative measurement for the limiting conditions, so that the safety and stability level of an operation mode can be clearly, intuitively and accurately evaluated from a plurality of dimensions, and reference and basis are provided for the adjustment and optimization of the operation mode.
详细信息 下载全文

申请号:201911255186.4 公开号:CN110864855A 主分类号:G01M3/26
摘要:【中文】本发明涉及一种在中低负荷下测量电站锅炉空预器漏风率的装置,其包括安装在空预器进口的第一烟气含氧量传感器、安装在空预器出口的第二烟气含氧量传感器、安装在空预器出口的飞灰含碳量传感器、数据采集单元和计算机。本发明还包括利用上述装置在中低负荷进行空预器漏风试验,并换算得到额定负荷或BMCR工况下空预器漏风率的方法,本发明的方法简单、减少空预器漏风的现场协调工作量和实验成本且结果准确。 【EN】The invention relates to a device for measuring the air leakage rate of an air preheater of a power station boiler under medium and low loads, which comprises a first flue gas oxygen content sensor arranged at the inlet of the air preheater, a second flue gas oxygen content sensor arranged at the outlet of the air preheater, a fly ash carbon content sensor arranged at the outlet of the air preheater, a data acquisition unit and a computer. The invention also comprises a method for carrying out the air leakage test of the air pre-heater under the medium and low loads by using the device and converting the air leakage rate of the air pre-heater under the rated load or BMCR working condition.
详细信息 下载全文

310363 条,当前第 1-10 条 下一页 最后一页 返回搜索页
©2022 Patent9.com All rights reserved.