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公开(公告)号：US20200176995A1
公开(公告)日：2020-06-04
申请号：US16631627
申请日：2019-02-27
Applicant: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. TAIZHOU POWER SUPPLY COMPANY , STATE GRID CORPORATION OF CHINA
Inventor： Xiaoping FU , Wenqi HE , Chi ZHANG , Dongbo ZHANG , Daojian HONG , Yuande ZHENG , Minzhi CHEN , Mingxu CHEN , Zhen HUANG , Guode YING
Abstract: Provided is an anti-islanding protection system. The system is applied to a low-voltage distributed generation resource (DGR) and includes a box, a reverse power protector, a protection module and an output controller. The reverse power protector has an end connected to a first current transformer and has another end connected to the output controller. The reverse power protector is configured to provide reverse power protection for the low-voltage DGR. The output controller has an end connected to the protection module and the reverse power protector and has another end connected to a grid-connection switch of the low-voltage DGR. The output controller is configured to control the grid-connection switch to turn off when reserve power is detected. The protection module has an end connected to a second current transformer and has another end connected to the output controller. The protection module is configured to provide low-frequency protection, over-frequency protection, over-voltage protection and low-voltage protection for the low-voltage DGR.
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42.发明申请公开(公告)号：US20200102265A1
公开(公告)日：2020-04-02
申请号：US16616670
申请日：2018-01-12
Applicant: STATE GRID CORPORATION OF CHINA , STATE GRID SHAANXI ELECTRIC POWER RESEARCH INSTITUTE , CENTRAL SOUTH UNIVERSITY , STATE GRID (XI'AN) ENVIRONMENTAL PROTECTION TECHNIQUE CENTER CO. LTD
Inventor： Qiang SUN , Jian WU , Yin CHEN , De DING , Genzhou ZHANG , Xiaochun BAI , Anxiang GUO , Yantao ZHANG , Pinghai LV , Xiaobing YU
IPC: C07C253/00
Abstract: Provided are a process and a device for preparing environmentally-friendly insulating gas perfluoroalkylnitrile. The device comprises a first tank reactor, a second tank reactor, and a fixed bed reactor. A condensing and collecting device is provided at the top of the first tank reactor, a collecting and guiding channel at the bottom of the condensing and collecting device is connected to an inlet of a storage tank, and an outlet of the storage tank is connected to an inlet of the second tank reactor. The second tank reactor is connected to a perfluoroolefin tank. An outlet of the second tank reactor is connected to a storage gasification tank. The storage gasification tank is connected to a carrier gas tank, and an outlet of the storage gasification tank is connected to an inlet of the fixed bed reactor. The present invention starts from cyanuric chloride and perfluoropropylene, and uses two tank reactors and a fixed bed reactor to realize production with high atom economy. The preparation method has simple reaction conditions, high atom economy, low cost, and is continuous and enables scale production.
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公开(公告)号：US20200086754A1
公开(公告)日：2020-03-19
申请号：US15750892
申请日：2017-12-12
Applicant: STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID CHONGQING ELECTRIC POWER COMPANY , STATE GRID CORPORATION OF CHINA
Inventor： Xingzhe HOU , Yi LONG , Liankai CHEN , Guojun HE , Zhi LI , Yongxiang LIU , Hongliang SUN , Bin ZHU , Jing ZHANG , Huicai WANG , Tingting XU , Li ZHOU , Lin GONG , Xiaorui HU
Abstract: A method for charging an electric vehicle is provided. The method includes that a mobile charging apparatus transmits its own status information to a centralized battery distribution station; the centralized battery distribution station determines, according to the received status information, whether power of a battery of the mobile charging apparatus is less than a first threshold; if the power of the battery of the mobile charging apparatus is less than the first threshold, the battery of the mobile charging apparatus is processed so that the power of the battery of the mobile charging apparatus is greater than a second threshold, wherein the second threshold is greater than the first threshold; and if the power of the battery of the mobile charging apparatus is not less than the first threshold, the mobile charging apparatus charges the electric vehicle.
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44.发明申请公开(公告)号：US20200081898A1
公开(公告)日：2020-03-12
申请号：US15744912
申请日：2017-12-22
Applicant: BEIJING KEDONG POWER CONTROL SYSTEM CO LTD , NARI GROUP CORPORATION , STATE GRID CORPORATION OF CHINA
Inventor： HAINING WANG , LIN CHENG , YONGHUI LIU , SHUHONG SHI , XIAN ZHANG , CHUNCHENG GAO , YIN FANG , YONG DAI , LI TAO , MINGZHU YUAN , LEI WANG , TAO WANG , JIE LIU , XIAN ZHAO , XIANG TAN , NING YANG , SHOUBAO LI , PEIYU XI , QIAN ZHANG , CHUNYAN WANG , DONG LIU , WUJUN DONG , WENTAO LV , SHULU WAN , WEI WANG , XIAOPENG YUAN , JUNLIANG LV , LIN ZHANG , XIN CHANG , YUJIAN WU
IPC: G06F16/25 , G06F16/28 , G06F16/215
Abstract: The invention involves the field of power trading and especially involves a method for construction of power trading index system based on big data technology. Main steps are as follows: 1. data acquisition; 2. construction of index system: construction of index system is mainly based on cloud focus evaluation method to solve the problem of variables transformation and make data analysis through high concurrency distributed computing power of Spark memory access; 3. index calculation: adopt objective weighting approach to determine the weight of each index after index configuration and then adopt cloud focus evaluation method to calculate the weighted deviation of each index; store final evaluation result of each index into HDFS database after Spark calculation; 4. index display.
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公开(公告)号：US20200059093A1
公开(公告)日：2020-02-20
申请号：US16485144
申请日：2018-07-13
Applicant: STATE GRID JIANGSU ELECTRIC POWER CO., LTD SUZHOU BRANCH , STATE GRID JIANGSU ELECTRIC POWER CO., LTD , STATE GRID CORPORATION OF CHINA
Inventor： Chong TONG , Yunfeng CAI , Ziyang ZHANG , Qing WANG , Kang DAI , Wei YIN
IPC: H02J3/00 , G05B19/048
Abstract: Disclosed are a dynamic lightning protection method and system. The method includes detecting lightning in real time and tracking a position of a thunderstorm; and performing dynamic lightning protection and control on an electrical grid according to an electrical grid control strategy before the thunderstorm reaches or affects the electrical grid. Further disclosed is a dynamic lightning protection system.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20190191805A1
公开(公告)日：2019-06-27
申请号：US16228796
申请日：2018-12-21
Applicant: STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED , STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED MAINTENANCE COMPANY , STATE GRID CORPORATION OF CHINA
Inventor： Jiusong JIANG , Fuqiang XIONG , Xigui LI , Wenqi MAO , Gang LI , Ting ZHOU , Peng SUN , Wen KANG , Chaofeng ZHANG , Zhiping MAO , Zuosheng LI , Kai DONG , Jianli WU , Hong ZHANG , Ling LUO , Guoqi ZHANG
Abstract: A wearable equipment is adapted for substation maintenance mobile inspection and includes a binding strap and a controlling wireless communication module. A thermal imager is disposed on one side of the binding strap. A prism display component and a voice interaction module are disposed on the other side of the binding strap. The thermal imager, the prism display component, and a microphone and a speaker of the voice interaction module are connected to the controlling wireless communication module through cables, to transmit information in a power system intranet. An application method includes mounting the wearable equipment to an electric power helmet, and automatically sending an infrared image, a visible light image, power monitoring information, voice, and a video in a power operation area to a background management controlling system for the substation maintenance mobile inspection.
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47.发明授权公开(公告)号：US10308140B2
公开(公告)日：2019-06-04
申请号：US14907808
申请日：2014-07-26
Applicant: STATE GRID CORPORATION OF CHINA , NORTH CHINA ELECTRIC POWER UNIVERSITY (BAODING) , STATE GRID LIAONING ELECTRIC POWER COMPANY LIMITED ECONOMIC RESEARCH INSTITUTE
Inventor： Ming Meng , Jian Liu , Xiping Wang , Dalong Hu , Li Jiang , Yingwei Song , Yan Liu , Liaoyi Ning
Abstract: A renewable energy-based hybrid bi-directionally interactive DC traction power supply system includes two traction substations. Each substation includes transformers, rectifiers, bidirectional AC-DC converters, a DC bus, a catenary, a steel rail and a section post. A DC bus between two adjacent traction substations is provided with a DC renewable energy system constructed by an electric vehicle charging-discharging system, a distributed generation and more than one low voltage DC microgrid. The DC renewable energy system is connected to the DC bus between two adjacent traction substations through a high voltage DC bus, thus a DC circular microgrid being formed in a power supply section post. The electric vehicle charging-discharging system is formed by more than one bidirectional DC-DC charging-discharging equipments which are intended for in connection with the power batteries of the electric vehicle. The renewable energy-based hybrid bi-directionally interactive DC traction power supply system of the invention realizes effective usage of distributed generation and recycling of electric locomotive braking energy, reducing DC voltage fluctuation, thus improving reliability of the DC traction power supply system.
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公开(公告)号：US10290066B2
公开(公告)日：2019-05-14
申请号：US15963073
申请日：2018-04-25
Applicant: China Electric Power Research Institute Company Limited , State Grid Corporation of China , CLP Puri Zhangbei Wind Power Research & Testing Co., Ltd.
Inventor： Weisheng Wang , Chun Liu , Chi Li , Yuehui Huang , Yuefeng Wang , Cun Dong , Nan Zhang , Xiaofei Li , Yunfeng Gao , Xiaoyan Xu , Yanping Xu , Xiaofeng Pan
Abstract: A method and device for modeling a long-time-scale photovoltaic output time sequence are provided. The method includes that: historical data of a photovoltaic power station is acquired, and a photovoltaic output with a time length of one year and a time resolution of 15 mins is selected (101); weather types of days corresponding to the photovoltaic output are acquired from a weather station (102), and probabilities of transfer between each type of weather are calculated respectively (103); and a simulated time sequence of the photovoltaic output within a preset time scale is generated (104), and its validity is verified (105). By the method, annual and monthly photovoltaic output simulated time sequences consistent with a random fluctuation rule of a photovoltaic time sequence may be acquired according to different requirements to provide a favorable condition and a data support for analog simulation of time sequence production including massive new energy.
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公开(公告)号：US10288495B2
公开(公告)日：2019-05-14
申请号：US14650225
申请日：2013-07-16
Applicant: STATE GRID CORPORATION OF CHINA , STATE GRID BEIJING ELECTRIC POWER COMPANY , BEIJING ELECTRIC POWER ECONOMIC RESEARCH INSTITUTE
Inventor： Bin Shu , Ying Zhang , Kai Zhang , Weiyong Wang , Wei Li , Hongli Yu , Yifan Lin , Zhanwei Zhu , Zhihui Wang
Abstract: The disclosure provides a mixed-mode temperature measurement communication phase conductor and a temperature measurement communication system. The mixed-mode temperature measurement communication phase conductor includes: a stainless sleeving optical unit and a support line hinged with the stainless sleeving optical unit, wherein an aluminum wire is hinged outside the stainless sleeving optical unit and the support line; the stainless sleeving optical unit includes: multiple single-mode fibers and at least one multi-mode fiber, wherein fibers in the stainless sleeving optical unit are mutually hinged. The disclosure realizes whole-distance temperature measurement of conductor by setting the single-mode fiber to perform communication and the multi-mode fiber to perform temperature measurement.
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公开(公告)号：US20190113417A1
公开(公告)日：2019-04-18
申请号：US16090376
申请日：2017-12-29
Applicant: State Grid Zhejiang Electric Power Company Limited Electric Power Research Institute , State Grid Zhejiang Electric Power Research , STATE GRID Corporation of China , Zhejiang electric power test and Research Institut technical service center
Inventor： Hongkun LYU
Abstract: The present invention discloses a method for acquiring thermal efficiency of a boiler, comprising: acquiring effective output heat and total output heat of the boiler, and obtaining the thermal efficiency of the boiler according to the effective output heat and total output heat. In the method provided by the present invention, by acquiring the thermal efficiency of the boiler according to the obtained effective output heat and total output heat, the thermal efficiency of the boiler can be acquired without performing coal quality testing, thus the thermal efficiency of the boiler is conveniently obtained, and the real-time capability and accuracy are satisfied.
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