North China Electric Power University

State Grid Corporation of China

Shanxi University

State Grid Tianjin Electric Power Company

China Electric Power Research Institute Company Limited

Micromedmark Biotech Co., Ltd.

State Grid Beijing Electric Power Company

State Grid Shanxi Changzhi Power Supply Company

Lei Dong

Ye Li

Chenyu Zhang

Ke Zeng

Junfeng Zhang

Xiaohui Wang

Liantuan Xiao

Zhihong Li

Suotang Jia

Tianjiao Pu

Liqiang Zhao

Naishi Chen

Aizhong Tian

Peng Liu

Renle Huang

Chanqiong Wang

Frank K Tittel

Xiaoli Shen

Jiancheng Yu

Xianjun Ge

Minghao Ai

Hongpeng Wu

Fumin Qu

The disclosure relates to a quartz-enhanced photoacoustic spectroscopy gas detection apparatus and method based on beat effect. Provided is a quartz-enhanced photoacoustic spectroscopy gas detection apparatus based on beat effect, comprising a photoacoustic signal detection module, a gas chamber, a light source module and a data acquisition module. In the present invention, by detecting the beat signal generated by mixing the piezoelectric signal output from the quartz tuning fork with the demodulation signal of the lock-in amplifier, the electrical parameters of the quartz crystal oscillator and the concentration of the gas to be measured can be obtained accurately in a time period on the order of milliseconds.

Quartz-enhanced photoacoustic spectroscopy gas detection apparatus and method based on beat effect

An active power distribution network multi-time scale coordinated optimization scheduling method and storage medium are provided. The method includes the following steps: performing long-time scale optimization scheduling of an active power distribution network; performing short-time scale rolling optimization scheduling on the basis of MPC of the active power distribution network according to an optimization result of the long-time scale optimization scheduling of the active power distribution network. By using a model prediction control method, taking the long-time scale optimization scheduling result as a reference, and performing short-time scale rolling correction, the optimization scheduling of the active power distribution network is achieved, thereby reducing unfavorable influences of prediction precision of a distributed power supply and a low-voltage load on the optimization scheduling.

Active power distribution network multi-time scale coordinated optimization scheduling method and storage medium

The disclosure relates to the crossing field between a power transmission of an ultra-high-voltage and a power system simulation, specifically a method for analyzing an operation state of a substation by combining a whole grid model with a local grid model is provided according to the disclosure. The method includes following steps: performing a load flow calculation for the provincial grid to which a ultra-high-voltage line belongs, wherein initial data of the load flow calculation employs a grid model with E format for national power grid dispatching control center; making an equivalent transform for the model, forming an island independently from the provincial grid to which a ultra-high-voltage line belongs, and making a load flow calculation for the island to acquire data of node voltages and line transmission power.

Method for analyzing operation state of substation by combining whole grid model with local grid model

An isolated plant-functional microRNA or an extract containing said plant-functional microRNA, a preparation method therefor, and an application thereof are provided. The plant-functional microRNA originates from the endogenous microRNA of a plant, is present in a water-soluble and/or fat-soluble extract of said plant, and is capable of regulating non-plant target-genes.

Extraction, preparation, and application of plant micro-ribonucleic acid

Growing community of inventors

Shanxi, China

Lei Dong