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公开(公告)号：EP3291401B1
公开(公告)日：2020-02-12
申请号：EP16785743.2
申请日：2016-02-19
发明人： CHEN, Jun , WANG, Kai , ZHONG, Shouping , WANG, Guang , ZHANG, Qixue , CHEN, Jiasheng , GUO, Zigang , LI, Huazhong , JI, Yaoyao
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公开(公告)号：EP3211743B1
公开(公告)日：2019-10-09
申请号：EP15871856.9
申请日：2015-12-09
发明人： DONG, Yunlong , TIAN, Jie , HU, Zhaoqing , LI, Haiying , CAO, Dongming , LIU, Haibin , LU, Yu
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公开(公告)号：EP3511955A1
公开(公告)日：2019-07-17
申请号：EP17848108.1
申请日：2017-09-05
发明人： ZHANG, Xiang , CHEN, Chihan , LI, Zhao , SONG, Ge , ZHENG, Li , YANG, Fan
IPC分类号： H01C1/02
摘要： A housing structure of a planar resistor is provided, wherein electrode extraction ends (4) of the planar resistor are on the same side of the resistor. A housing structure body (1) is made of an insulating material covering the surface of the resistor. An insulating structure (3) having a groove opening facing toward or away from the resistor is provided around each electrode extraction end (4) of the resistor. The insulating structure (3) is configured to be a multi-tooth or multi-groove insulating structure. Compared with the prior art, a structure having teeth or slots increases the surface creepage distance of an insulating material between two electrodes. Since the electrodes are mounted toward different directions, and a multi-groove opening is designed to face inward or outward, dust and dirt can hardly enter the resistor, so that the operating reliability and maintenance-free property of the resistor are improved.
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公开(公告)号：EP3477809A1
公开(公告)日：2019-05-01
申请号：EP17838379.0
申请日：2017-04-25
发明人： SHI, Wei , YANG, Bing , LV, Wei , WANG, Wenjie , XIE, Yeyuan , FANG, Taixun , CAO, Dongming
IPC分类号： H02H7/26
摘要： A closing control method for a high-voltage DC circuit breaker. The method comprises: closing breaking units of the transfer branch (2) group by group, then closing the main branch (1), and finally open the transfer branch. During the process of closing the breaking units of the transfer branch group by group, determine whether there is a fault in the power transmission system after closing current breaking unit group. if there is no fault, proceed to close the next breaking unit group until all breaking unit groups are closed before proceeding to the next step; if there is a fault, all the breaking units that have been closed are opened and the closing operation is ended. The method can pre-charge the power transmission system during the closing process of the high-voltage DC circuit breaker, and lower the overvoltage and system oscillation caused by the closing operation.
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公开(公告)号：EP3419136A1
公开(公告)日：2018-12-26
申请号：EP17773236.9
申请日：2017-03-29
发明人： DING, Jiudong , LU, Yu , DONG, Yunlong , LI, Gang , HU, Zhaoqing
摘要： Provided in the present invention is a direct current power grid voltage control method, dividing control of a direct current power grid voltage into three processes, namely natural voltage regulation, first voltage regulation and second voltage regulation; the converter stations in the direct current power grid are divided into three types, namely power regulation converter stations, auxiliary voltage regulation converter stations, and voltage regulation converter stations, on the basis of whether the converter station has a voltage regulation capacity, the power regulation converter stations operating in a fixed power control mode, the voltage regulation converter stations operating in a fixed voltage control mode or an auxiliary voltage control mode, and the auxiliary voltage control converter stations operating in the auxiliary voltage control mode; all the converter stations in the direct current power grid participate in natural voltage regulation, the auxiliary voltage regulation converter stations and the voltage regulation converter stations participate in first voltage regulation, and the voltage regulation converter stations participate in second voltage regulation; by means of a combination of the three voltage regulation processes, accurate control of the direct current voltage can be implemented in a steady state, and direct current voltage change can be suppressed in a transient state.
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公开(公告)号：EP3376637A1
公开(公告)日：2018-09-19
申请号：EP17759247.4
申请日：2017-03-01
发明人： GAO, Shengfu , FANG, Taixun , WANG, Yongping , ZHANG, Xiang , PAN, Weiming , YUAN, Ming , ZHOU, Guqing
CPC分类号： G01R31/08 , H02H1/00 , H02J13/00 , H02M1/088 , H02M1/32 , H02M7/7575 , Y02E60/725 , Y04S10/20
摘要： Disclosed is a method for providing warning about a failure in a converter valve. The method comprises: within a predetermined time range, recording time information of status indication signals fed back by thyristor control units (TCU) of a converter valve, performing statistics and comparison of the pieces of time information using a bias statistics method, marking a thyristor level whose bias exceeds a preset value, and determining a probability of failure in the thyristor according to the marking result. Also disclosed is a system for providing warning about a failure in a converter valve. The system comprises a register array used to store bias data of thyristor levels of a converter valve and a high-speed processor used to process, using a bias statistics method, status indication signals fed back by TCUs. The solution of the present invention can identify a thyristor level with a relatively high probability of failure, achieve early warning, and provide a reference for device replacement, thereby reducing a probability of outage of a direct current system due to a failure of a thyristor level, and providing references for device performance optimization and circuit design optimization of a converter valve.
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47.发明公开
公开(公告)号：EP3211741A4
公开(公告)日：2017-12-06
申请号：EP15868517
申请日：2015-11-24
申请人： NR ELECTRIC CO LTD , NR ENG CO LTD
发明人： DONG YUNLONG , TIAN JIE , CAO DONGMING , LI HAIYING , DING JIUDONG , HU ZHAOQING , LI GANG , LIU HAIBIN , LU YU
CPC分类号： H02J3/46 , H02J1/10 , H02J3/00 , H02J3/005 , H02J3/36 , H02J3/38 , H02J2003/001 , H02J2003/388
摘要： The present invention provides a method for inhibiting multiple inverter stations from entering a passive control mode in an island state. The method includes dividing inverter stations into groups in advance; a principle for group division is dividing inverter stations whose alternating-current sides are connected to each other through an alternating-current line in a normal running condition into a group; priorities of the inverter stations are preset in each group to tune relevant fixed values of the inverter stations for island detection; a tuning principle is that an inverter station with a higher priority has a more sensitive relevant fixed value, and an island state is more easily detected for the corresponding inverter station; an inverter station for which an island state is detected can enter a passive control mode only when all the other inverter stations with priorities higher than the priority of the inverter station in the group send enabling signals.
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公开(公告)号：EP3240134A1
公开(公告)日：2017-11-01
申请号：EP15871743.9
申请日：2015-09-29
发明人： LU, Dongbin , WANG, Yongping , WANG, Zhenxi , WANG, Junsheng , PAN, Weiming
IPC分类号： H02J3/36
CPC分类号： H02J3/36 , H02J3/02 , H02J2003/001 , H02M1/4208 , H02M3/33507 , Y02E60/60
摘要： Provided are a commutation control method and a commutation control apparatus. The method includes: detecting whether transient disturbance in a DC transmission system satisfies a disturbance criterion condition (101); when the transient disturbance satisfies the disturbance criterion condition, determining a maximum trigger delay angle used in a commutation operation performed by a current converter on an inverter side of the DC transmission system, the determined maximum trigger delay angle being smaller than a maximum trigger delay angle used before the transient disturbance (102); and controlling the current converter on the inverter side of the DC transmission system to perform the commutation operation based on the determined maximum trigger delay angle (103). By means of the method and the apparatus, a corresponding maximum trigger delay angle can be determined according to the degree of transient disturbance in a DC transmission system, thereby ensuring the commutation margin and avoiding a commutation failure when large transient disturbance occurs.
摘要翻译： 提供了一种换向控制方法和换向控制装置。 该方法包括：检测DC传输系统中的瞬态干扰是否满足干扰标准条件（101）; 当所述瞬变干扰满足所述干扰标准条件时，确定在所述直流输电系统的逆变器侧的电流转换器进行的换流操作中使用的最大触发延迟角，所确定的最大触发延迟角小于最大触发延迟角 在瞬态干扰之前使用（102）; 以及基于所确定的最大触发延迟角度来控制DC传输系统的逆变器侧上的电流转换器以执行换流操作（103）。 通过该方法和装置，可以根据直流输电系统中的瞬态干扰程度确定相应的最大触发延迟角，从而保证换相余量，避免发生大的瞬态干扰时的换相失败。
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49.发明公开LINE POWER CONTROL METHOD AND SYSTEM OF UNIFIED POWER FLOW CONTROLLER 审中-公开LEITUNGSSTROMSTEUERUNGSVERFAHREN UND-SYSTEMS EINES VEREINHEITLICHTEN STROMFLUSSREGLERS
公开(公告)号：EP3157122A4
公开(公告)日：2017-07-26
申请号：EP15819677
申请日：2015-01-22
发明人： TIAN JIE , PAN LEI , LIU CHAO , SHEN QUANRONG , LI HAIYING , LU YU , DONG YUNLONG
IPC分类号： H02J3/24
摘要： The present invention provides a line power control method and system for a unified power flow controller. The line power control method for a unified power flow controller includes outer loop line power control, inner loop valve side current control, and converter valve control. Series-side converter valve side current reference values I sedref and I seqref are calculated by means of the outer loop line power control according to line power instructions P ref and Q ref that are input, a measured line power U L , and measured line power P line and Q line ; a converter output voltage reference value U cref is calculated by means of the inner valve side current control according to the valve side current reference values that are output by means of the outer loop power control, a measured valve side current, and a measured valve side voltage; and finally, a converter outputs, according to the voltage reference value, a corresponding voltage to control line power to achieve a reference value. The control method is simple and practical, has high reliability, can rapidly and accurately control the line power, and can implement independent decoupling control of active power and reactive power of a line.
摘要翻译： 本发明提供一种统一潮流控制器的线路功率控制方法和系统。 统一潮流控制器的线路功率控制方法包括外环线功率控制，内环线阀侧电流控制和换流阀控制。 根据输入的线路功率指令P ref和Q ref，测量的线路功率UL和测量的线路功率P，通过外部环路线路功率控制来计算串联侧转换器阀门侧电流基准值I sedref和I seqref 线和Q线; 根据借助于外环功率控制输出的阀侧电流参考值，测量的阀侧电流和测量的阀侧，通过内侧阀侧电流控制来计算转换器输出电压参考值U cref 电压; 最后，转换器根据电压参考值输出对应的电压，以控制线路功率达到参考值。 该控制方法简单实用，可靠性高，能够快速，准确地控制线路功率，并可实现线路有功和无功的独立解耦控制。
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50.发明公开LINE POWER CONTROL METHOD AND SYSTEM OF UNIFIED POWER FLOW CONTROLLER 审中-公开LEITUNGSSTROMSTEUERUNGSVERFAHREN UND -SYSTEM EINES VEREINHEITLICHTEN STROMFLUSSREGLERS
公开(公告)号：EP3157122A1
公开(公告)日：2017-04-19
申请号：EP15819677.4
申请日：2015-01-22
发明人： TIAN, Jie , PAN, Lei , LIU, Chao , SHEN, Quanrong , LI, Haiying , LU, Yu , DONG, Yunlong
IPC分类号： H02J3/24
摘要： The present invention provides a line power control method and system for a unified power flow controller. The line power control method for a unified power flow controller includes outer loop line power control, inner loop valve side current control, and converter valve control. Series-side converter valve side current reference values I sedref and I seqref are calculated by means of the outer loop line power control according to line power instructions P ref and Q ref that are input, a measured line power U L , and measured line power P line and Q line ; a converter output voltage reference value U cref is calculated by means of the inner valve side current control according to the valve side current reference values that are output by means of the outer loop power control, a measured valve side current, and a measured valve side voltage; and finally, a converter outputs, according to the voltage reference value, a corresponding voltage to control line power to achieve a reference value. The control method is simple and practical, has high reliability, can rapidly and accurately control the line power, and can implement independent decoupling control of active power and reactive power of a line.
摘要翻译： 本发明提供了一种用于统一功率流量控制器的线路功率控制方法和系统。 统一动力流量控制器的线路功率控制方法包括外环线路功率控制，内循环阀侧电流控制和转换阀控制。 串联侧转换器阀侧电流参考值I sedref和I seqref通过根据输入的线路功率指令P ref和Q ref，测量线路功率UL和测量线路功率P的外部线路功率控制来计算 线和Q线; 根据通过外环功率控制输出的阀侧电流参考值，测量的阀侧电流和测量的阀侧，通过内阀侧电流控制来计算转换器输出电压基准值U cref 电压; 最后，一个转换器根据电压参考值输出一个相应的电压来控制线路功率，达到一个参考值。 控制方法简单实用，可靠性高，可以快速，准确地控制线路功率，并可实现线路有功功率和无功功率的独立去耦控制。
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