Abstract: A natural gas circuit modeling method for operation control of an integrated energy system, including: establishing, based on the mass conservation and momentum conservation equations in the natural gas pipeline, as well as the state equation and the flow equation of the natural gas, a partial differential equation between the flow rate and the pressure in the natural gas pipeline; mapping the gas circuit to the frequency domain through Fourier transform and obtaining the lumped parameter model through the two-port equivalence; establishing, combined with the natural gas compressor equation, the general branch model of the natural gas circuit; defining the node-branch correlation matrix and the node-outflow branch correlation matrix to establish the topological constraint equation of the natural gas circuit; and establishing, combined with the general branch model of the natural gas circuit and the topological constraint equation of the natural gas circuit, the natural gas circuit equation.

Abstract: A power system dispatching method considering voltage sensitive load reserve is provided, with which a power system dispatching model constituted by a ground state operating point model of the power system, an evaluation model of the voltage sensitive load regulation range and an optimization objective of power system dispatch is established, by solving the power system dispatching model, a power system dispatching solution considering voltage sensitive load reserve is obtained.

Abstract: The invention relates to 2-(4-Substituted phenylamino) polysubstituted pyridine compounds as inhibitors of non-nucleoside HIV reverse transcriptase, preparation methods and uses thereof. Specifically, the invention relates to compounds of formula I or the pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5, R6, R7 and X are as defined in the description. The compounds of formula I of the invention are a type of anti-HIV active compounds having new backbone structure.

Abstract: The invention relates to 2-(4-Substituted phenylamino) polysubstituted pyridine compounds as inhibitors of non-nucleoside HIV reverse transcriptase, preparation methods and uses thereof. Specifically, the invention relates to compounds of formula I or the pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5, R6, R7 and X are as defined in the description. The compounds of formula I of the invention are a type of anti-HIV active compounds having new backbone structure.