Nr Electric Co., Ltd

Nr Engineering Co., Ltd

Tsinghua University

China University of Mining and Technology (CUMT)

Inner Mongolia University of Technology

Xuzhou Zhirun Mining Equipment Science and Technology Co., Ltd

Changzhou Santai Technology Co., Ltd.

Ke Wang

Yunlong Dong

Zhaoqing Hu

Yu Lu

Jiang Lu

Gang Li

Nannan Wang

Jie Tian

Haiying Li

Shunke Sui

Hui Wang

Yongping Wang

Jiudong Ding

Tiangui Jiang

Xin Li

Zhencai Zhu

Gongbo Zhou

Guohua Cao

Wei Li

Yuxing Peng

Meng Zhao

Xin Zhang

Dongming Cao

Yu Tang

Weihong Peng

Yonghui Zhang

Ying Wang

Wenqiang Zhao

Shanzeng Liu

Lei Pan

Chongxue Jiang

Liping Li

Defeng Qiu

Chunli Hua

Ruhai Huang

Yun Xia

Yadong Feng

Jianmin Xiao

Wanli Liu

Kanzhao Gao

Xianlai Hu

Yunyun Yang

Xiaoying Zhou

Zhengsen Yu

Yonghua Xie

Disclosed are inhibitors of mevalonate pathway as an efficient vaccine adjuvant and use thereof. In particular, the inhibitor is an acetoacetyl-CoA transferase inhibitor, a HMG-CoA synthase inhibitor, a HMG-CoA reductase inhibitor, a mevalonate kinase inhibitor, a phosphomevalonate kinase inhibitor, a mevalonate-5-pyrophosphate decarboxylase inhibitor, an isopentenyl pyrophosphate isomerase inhibitor, a farnesyl pyrophosphate synthase inhibitor, a geranylgeranyl pyrophosphate synthase inhibitor or a geranylgeranyl transferase (I, II) inhibitor. Also disclosed is an immunogenic composition comprising inhibitors of mevalonate pathway as an adjuvant.

Mevalonate pathway inhibitor as highly-efficient vaccine adjuvant

During initiation under an isolated island condition, the amplitude of a voltage reference wave output generated by a flexible DC transmission control and protection system is in a segmented mode, wherein a first segment of the reference wave amplitude begins at zero or a fixed value Uand rapidly increases to UkV at a rate of a kV/s, avoiding a low output voltage reference wave and high error and harmonic content of a sampled voltage and current. A second segment increases to UkV at a rate of &#x3b2; kV/s, a third segment increases to UkV at a rate of &#x3b3; kV/s, and the Nsegment increases to a rated voltage of UkV at a rate of &#x3b5; kV/s, thereby achieving non-disturbance and shockless initiation of a flexible DC transmission system under an isolated island condition.

Method for initiating flexible DC transmission system under isolated island condition

Disclosed in the present invention is a voltage and current control method for a direct-current transmission system. The method comprises: calculating a DC voltage reference value of a voltage source converter of a DC voltage control end, on the basis whether a direct-current voltage end of a direct-current pole of a direct-current transmission system substantially controls a direct-current voltage; using &#xbd; of the calculated direct-current voltage reference value of the voltage source converter as a bridge arm voltage direct-current bias, calculating a difference between the direct-current voltage reference value of the voltage source converter and a measured direct-current voltage value, and inputting the difference into a direct-current voltage control outer loop of the voltage source converter to perform closed-loop control, so as to control the direct-current voltage or the direct current of the direct-current pole. Correspondingly, also provided is a voltage and current control device for the direct-current transmission system. By the means of the present invention, the direct-current voltage and the direct current of the direct-current transmission system provided with the voltage source converter can be effectively controlled.

Voltage and current control method and device for direct-current power transmission system

A coordinated control method for series voltage source converter valve groups comprises: allocating a total direct-current voltage reference value or a total active power reference value at the end where a direct-current electrode series voltage source converter valve group is located according to the total number of voltage source converter valve groups in series; for a direct-current voltage control end, controlling the direct-current voltage of each valve group according to the assigned direct-current voltage reference value for each valve group; for an active power control end, controlling the active power of each valve group according to the assigned active power reference value for each valve group and based on adding the active power compensation amount of the valve group which has voltage equalization effects on the valve group. Correspondingly, also providing a coordinated control device for series voltage source converter valve groups. The direct-current voltage equalization of each valve group in operation of the direct-current voltage control end or the active power control end of the series voltage source converter valve group is achieved.

Coordinated control method and device for series voltage source converter valve group

A device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft is provided. End cage jamming buffer mechanisms are added at both ends of an automatic wire rope tension balancing mechanism, wherein the end cage jamming buffer mechanisms include an end buffer module and an end fixing module, and the end buffer module and the end fixing module are respectively mounted on shafts of the automatic wire rope tension balancing mechanisms at two ends. The end buffer module mainly consists of a buffer bearing pedestal, a limit block, a buffer block, and a stop block sequentially mounted on the shaft of the automatic wire rope tension balancing mechanism at one end. The end fixing module mainly consists of a fixing bearing pedestal and a fixing block mounted on the shaft, wherein the fixing bearing pedestal is connected to a transmission gear by an adjusting bolt.

Device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft

Apparatus and method for improving chemical process efficiency and promoting sharing of chemistry information for guiding and encouraging scientific researchers and institutions to develop and share more efficient chemical processes. Technical solution comprises: by means of execution and assessment analysis of relevant chemical processes of target compound or target compound system and provision of application program and website having social and electronic transaction functions installed on mobile device for scientific researchers on basis of Internet technology, sharing, transaction and assessment of relevant chemical processes of and chemistry information about compound can be disclosed are implemented, and users are guided and encouraged to share chemistry information and experience via electronic transaction system, developing more efficient chemical processes, reducing resource waste, promoting research and development efficiency, improving research and development efficiency of unknown innovative chemical processes and compounds.

Apparatus and method for improving chemical process efficiency and promoting sharing of chemistry information

A method for fault positioning and recovery of a voltage source converter includes following steps. Locking a converter station when it is detected that an alternating-current voltage contains a zero sequence voltage or a direct-current voltage contains an unbalanced voltage. Positioning a fault by continuing to detect the zero sequence voltage of an alternating-current side of the converter. Recovering operation of each station after the fault is positioned. The method for fault positioning and recovery is simple, practical, has high reliability, and can effectively detect the problems that each station contains a zero sequence voltage of an alternating-current side and cannot easily position a fault caused due to transmission of the zero sequence voltage of the alternating-current side to an opposite-side alternating-current system via a voltage source converter.

Method and system for fault positioning and recovery of voltage source converter

A fault current limiting control and protection coordination method for a converter of a flexible direct current transmission system operating in an islanding state is provided. The current output command limit Imax is used to limit the current commands of inner loop currents, and in the event of a fault, Imax is set equal to or slightly larger than a value for an AC line overcurrent protection section.

Fault current limiting control and protection coordination method for converter of flexible direct current power transmission system operating in islanding state

A series compensation device suitable to double-circuit lines is disclosed. The device includes one series transformer and one converter. One converter and dual-circuit transmission lines are respectively connected to three windings of one series transformer. In the solution provided in the present application, the device can be independently installed in a power transmission system to be used as a static synchronous series compensator, and can also be used as a component of a unified power flow controller, a convertible static compensator, an interline power flow controller and a unified power quality conditioner to be connected to a power transmission system device in series. The device can save the capacity of a converter, improve the application efficiency of the series compensation device, and reduce the cost and area occupation.

Series compensation device applicable to double-circuit line

Provided is a method for controlling a zero sequence voltage of a voltage source converter. When an alternating current system ground fault occurs, a zero sequence voltage at an alternating current (AC) side or a zero sequence voltage at a direct current (DC) side of a converter is detected. If the detected zero sequence voltage is greater than a set value V0ref, a DC side voltage of the converter can be increased to a set value Udc0, thereby generating an appropriate reference wave at the AC side of the converter to match an AC voltage, and accordingly controlling overmodulation of a reference wave at a faulty station to suppress fluctuation of a DC voltage.

Method for controlling zero sequence voltage of voltage source converter

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Jiangsu, China

Ke Wang