Search

As the main body of energy supply, the park needs to integrate various energy sources such as electric power, fossil energy, and thermal energy in the regional system. The integrated energy system is an important means to achieve "multiple energy complementarity and coordinated development of source, grid, storage, and storage" in the industrial park. This paper explores the external development environment of multi-energy complementarity in the park and the current status of domestic and foreign pilots, and provides a reference for my country's extensive implementation of the multi-energy complementarity system in the park. Taking the park's multi-energy complementary system as an object, analyze the development status of the park's multi-energy complementary system, and carry out analysis of the operating characteristics of the park's multi-energy complementary system, specifically from the analysis of operating scenarios and clarify the park under the multi-condition coupling of operation mode, capacity configuration and user type Analyze and discuss several aspects of the operating scenario. This article puts forward the function of implementing multi-energy complementary system in the park, and establishes the basic operation mechanism of the multi-energy complementary system in the park, which lays a theoretical foundation for the in-depth study of the multi-energy complementary system in the park to participate in the integration of clean energy.

With the boom in the construction of industrial parks, the construction of the park pays more attention to improving the comprehensive utilization rate of energy, reducing energy waste, and building a low-carbon, safe and efficient integrated energy system. In this environment, the distributed integrated energy system has become the energy planning of the industrial park. One of the important forms. This article first introduces the distributed integrated energy system, and summarizes the operation methods of the distributed integrated energy system. Secondly, a comparative analysis of old industrial parks and industrial parks applying integrated energy systems found that the energy system planning of old industrial parks has problems such as lack of energy reuse, unsatisfactory economic efficiency, and unreasonable energy utilization. In order to solve the above problems, this paper uses the park-level integrated energy system optimization model to propose a more economical, environmentally friendly and reasonable energy use plan for the new industrial park’s energy planning based on the existing problems of the old industrial park. Finally, the proposed comprehensive value evaluation model is based on the IES The plan is further verified and analyzed to explain the economics and necessity of planning and operating a distributed integrated energy system in the industrial park.

Photovoltaic inverter is the most critical component of photovoltaic power generation system, which plays an important role in the dynamic characteristics of the entire power generation system. Therefore, obtaining accurate parameters of photovoltaic inverter is the basis for analyzing the impact of photovoltaic system grid-connection. In this paper, an improved genetic particle swarm optimization (GPSO) algorithm based on self-adaptability is proposed for parameter identification of common photovoltaic inverter double closed-loop control systems. In the case of light intensity mutation and temperature mutation, the inverter parameters are identified respectively, and the identification results with high accuracy are obtained. The effectiveness and applicability of the identification method are verified by simulation.

Drilling fluids are widely used in the drilling of deep wells to clean and transport the rock cuttings, maintain the sidewall of oil well, lubricate and cool the drilling bit, and control the formation pressures. The present work aims at improving the high-temperature resistance of water-based drilling fluid by using the newly synthesized fluid loss additive named PAASD. This copolymer was obtained through the solution polymerization of four kinds of monomers. The synthesis conditions with the optimal API filtration were studied by single synthetic experiment, and the chemical structure of final product was confirmed by FTIR spectroscopy. The target product was carried out with thermal stability analysis, rheological property, filtrate property, temperature resistant capacity, salt tolerance capacity, micro-crosslink structure property, particle size distribution and the compatibility performance experiment. The results showed that PAASD was an efficient fluid loss additive, and the API filtration of fresh water drilling fluid containing 2% PAASD was only 5.2 mL, it was 10.6 mL after aging at the condition of 200°C and 16 h. Besides, PAASD has a good thermal stability, salt tolerance, and it could improve the rheological property of drilling fluid system obviously. Therefore, it could be used as fluid loss additive of water-based drilling fluid in salty and high-temperature environment.

Sites contaminated with hazardous materials pose serious risks to human health and ecological environments. Quantitative health risk assessment is a site-specific complex procedure requiring evaluation of all possible pathways. Several studies have focused on the evaluation of heavy metals or organic pollutants; however, only few studies focused on the evaluation of diverse pollutants such as heavy metals and organics. In this study, the health risk of heavy metals and organic pollutants in the soils near coke oven gas plants, China, was assessed according to three human exposure pathways (peroral intake soil, skin exposure to soil, inhale soil.). The carcinogenic and noncarcinogenic risk values of the heavy metals and organic pollutants in each grid (divided into three zones and 60 grids) and grid layer (divided into three layers and 128 samples) were calculated. The total carcinogenic and noncarcinogenic risk values were calculated cumulatively as per the grid and grid layer. The grid area and the volume of contaminated soil corresponding to various risk factors were calculated. The results of the health risk assessment show that 49 out of the 60 grids have a carcinogenic risk factor >10 5 with a total area of 103,340 m 2 . This site has extremely high health risk if 10 5 is regarded as the assessment standard for causing cancer. These results show that coke oven gas plants can pose serious risk to human health, and carcinogenic effects should cause more attention.