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公开(公告)号：EP3706276A1
公开(公告)日：2020-09-09
申请号：EP19763364.7
申请日：2019-02-21
发明人： LU, Dongbin , HUANG, Hua , PAN, Weiming , GAO, Shengfu , LIU, Lei , YANG, Fan
摘要： The present invention discloses a bypass thyristor valve group inspection method and control apparatus for inspecting sub-modules in a bypass thyristor valve group, and in particular, including: dividing the bypass thyristor valve group into N sub-modules, where N is greater than or equal to 2, N is a natural number, and each sub-module is formed by connecting one or more thyristors in series; under the condition that the bypass thyristor valve group bears a normal forward voltage, sequentially triggering, by the bypass thyristor valve group control apparatus, the sub-modules according to a certain time period; detecting whether the sub-modules are capable of operating normally or not; and if not, sending an alarm signal. According to the bypass thyristor valve group inspection method and control apparatus, the problem of thyristor performance monitoring under the condition that the bypass thyristor valve group does not operate for a long time is effectively solved, and safety in operation of a protected voltage source current converter is guaranteed.
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公开(公告)号：EP3588112A1
公开(公告)日：2020-01-01
申请号：EP18832716.7
申请日：2018-06-20
发明人： YANG, Fan , LIU, Lei , ZHANG, Xiang , ZHOU, Chen , PAN, Weiming , FANG, Taixun
IPC分类号： G01R31/26
摘要： A thyristor valve test system based on cooperation of logic functions of software, wherein the test system comprises: a thyristor valve (5) to be tested, a VBE (3) and a tester (4), and the VBE (3) has a dedicated test mode, the tester (4) provides three steps for each test item. The thyristor valve (5) to be tested and the VBE (3) are connected by optical fibers (1), and the thyristor valve (5) to be tested and the tester (4) are connected by cables (2), and there is no connection between the VBE (3) and the tester (4).
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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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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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