State Grid Corporation of China

State Grid Jiangsu Electric Power Company

State Grid Jiangsu Electric Power Co., Ltd. Marketing Center

Langnai Biotech Co., Ltd

L&p Food Ingredient Co., Ltd

State Grid Jiangsu Electric Power Design Consulting Institute Co., Ltd.

State Grid Jiangsu Electric Power Co., Ltd. Economic Research Institute

Ming Yan

Chen Li

Zheng Xu

Wenjia Zhang

Wanchun Qi

Hui Cai

Quanquan Wang

Zhenjian Xie

Caixuan Xu

Chengchen Huang

Zheren Zhang

Miao Wei

Wentao Sun

Boliang Liu

Xingning Han

Shilei Han

Sheng Chen

Sanyong Wang

Zhuyi Peng

Chunrong Li

Zhilin Zhang

Feifei Zhao

Provided is a control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station. The control strategy includes: 1) numbering all MMC units connected in parallel in a MMC valve manifold; (2) for a MMC unit using a constant direct-current voltage control manner, calculating a direct-current instruction value of the MMC unit according to a direct-current measurement value; (3) for a MMC unit using a constant active power control manner, calculating an active power instruction value of the MMC unit according to the rated capacity of the MMC unit and a direct-current instruction value of a system rectifier station; (4) for the MMC unit using the constant direct-current voltage control manner, correcting a direct-current voltage instruction value of the MMC unit by using the direct-current instruction value and the direct-current measurement value, and controlling the MMC unit according to the corrected direct-current voltage instruction value.

Control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station

Provided are a 3-epimerase, an encoding polynucleotide therefor, a nucleic acid construct, vector, and host cell comprising the polynucleotide, a method for producing the 3-epimerase, and use of the 3-epimerase.

3-epimerase and polynucleotide encoding same

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Nanjing, China

Ming Yan