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In this paper, a series of scientifically rational index system is set up to evaluate the effect of energy saving and loss decreasing in power distribution networks. The establishment of the index system is based on a variety of new technical measures. According to the feature of wide range and weak consistency, an evaluation in power distribution networks based on rank correlation analysis is proposed. In such a way, the procedure is clear, simple and highly exercisable. With the application of evaluation process described in this paper, present situation in power distribution networks in a region is evaluated, which justifies the validity of the method.

Nowadays the main electrical wiring in medium-size and large-size thermal power units is mostly unit wiring. In the quarter of small reactive power load, some generators need to work in phase-lag operation during the daytime and in phase-advancement operation at night to meet the demand of voltage quality of their plant’s high-voltage side. This operation, however, will lower the voltage of auxiliary power and do harm to system’s stability. This paper proposes a kind of coordinated control strategy for generator-transformer’s voltage regulation. In this strategy, the main transformer should be on-load tap charger and the controller regulate the generator voltage and transformation ratio simultaneously when needed, thus the voltage quality of both high-voltage side and auxiliary power side can be insured and the generator no longer work in phase-advancement operation. This control strategy can be a meaningful proposal for AVC in smart grid in the future. Simulation result shows the stability and reliability of the proposed control strategy.

Butyl rubber was synthesis by solution process in hexane-chloromethane mixed solvent using ethylaluminium sesquichloride/water as initiating system The product has comparable properties with BK1675(solution process) and EXXON268（slurry process）in terms of molecular, molecular distribution, unsaturated degree as well as processing properties of Mooney viscosity, vulcanization, tensile properties. The solution method will open up a new way to produce butyl rubber in China.