Integrated urban water management modelling under climate change scenarios

The concept of integrated water management is uncommon in urban areas, unless there is a shortage of supply and severe conflicts among the users competing for limited water resources. Further, problem of water management in urban areas will aggravate due to uncertain climatic events. Therefore, an Integrated Urban Water Management Model considering Climate Change (IUWMCC) has been presented which is suitable for optimum allocation of water from multiple sources to satisfy the demands of different users under different climate change scenarios. Effect of climate change has been incorporated in non-linear mathematical model of resource allocation in term of climate change factors. These factors have been developed using runoff responses corresponding to base and future scenario of climate. Future scenarios have been simulated using stochastic weather generator (LARS-WG) for different IPCC climate change scenarios i.e. A1B, A2 and B1. Further, application of model has been demonstrated for a realistic water supply system of Ajmer urban fringe (India). Developed model is capable in developing adaptation strategies for optimum water resources planning and utilization in urban areas under different climate change scenarios.     

Solid-state controller for an IAG-based stand-alone wind energy conversion system

This paper deals with an implementation of voltage and frequency controller (VFC) for isolated asynchronous generator-based three-phase autonomous wind energy conversion system. The focus of the proposed work is to provide a feasible solution for rural communities to serve their electricity needs. The least mean square algorithm is used for the extraction of active and reactive power components of the load currents. A three-leg voltage-sourced converter with a battery energy storage system is used as a VFC. The control algorithm is implemented using a digital signal processor. The steady-state and dynamic performances of VFC are demonstrated through test results under static and dynamic loads.     

A review on transient stability of DFIG integrated power system

With the increasing penetration of doubly fed induction generators (DFIGs), the impact of the DFIG on transient stability attracts great attention. Transient stability is largely dominated by generator types in the power system, and the dynamic characteristics of DFIG wind turbines are different from that of the synchronous generators in the conventional power plants. The analysis of the transient stability on DFIG integrated power systems has become a very important issue. This paper reviews the current research on the issue from two aspects. One is to describe the methods to improve the fault ride through capability of DFIG wind turbines and the other is to analyse the impact of the DFIG wind farm on transient stability of power systems.     

大功率应急柴油发电机组主油罐配置优化研究

为有效降低某工程大功率应急柴油发电机组主油罐的火灾安全风险和设备制造地下就位安装难度,通过对相关规范的分析,研究了两种主油罐配置优化方案,从规范符合性、油罐制造、油罐安装、安全性、运行要求和投资方面进行了比较,确定采用主油罐分置方案,并应用到具体工程项目。     

高压窄脉冲臭氧发生器电源的研究

臭氧作为一种广谱灭菌和强氧化剂的应用越来越广，然而在实际应用中由于臭氧发生器所使用是高压脉冲电源，易受环境因素的影响，性能不稳定，可行性差，能耗高，影响了臭氧技术的应用，本文介绍了一种新型臭氧发生器的电源电路，它采用绝缘栅双极性IGBT作为功率开关管，并采PPWM脉宽调节方式稳定电压，具有较高的频率和较窄的脉冲上升沿，能满足臭氧发生器电源大功率，高性能稳定性，高效率的要求。     

利用废旧聚苯乙烯泡沫塑料制备水乳型纸箱防水涂料

利用废旧聚苯乙烯泡沫塑料制备水乳型纸箱防水涂料的工艺流程，配方组成以及涂料性能的测试方法     

增压式柴油发电机组的噪声治理技术

增压式柴油发电机组由于柴油机增压，使气流阻力增加。在对它进行降噪处理时，特别要控制其排气消声通道的压力损失。最关键的还是降低通道各器件中的流速。     

K-600中子发生器的氚净化装置

采用摧化氧化和吸附原理,研制了一台氚净化装置.它可使氚浓度为2.3x10~6Bq/L的未净化气体净化到3.7Bq/L,去污因子(D=未净化时排放气体的氚浓度与净化后排放气体的氚浓度之比)达6.2×10~5.     

油田采出水用于热采蒸汽发生器给水的研究

提出了低含盐、负硬度油田采出水和高含盐、非碳酸盐硬度油田采出水回用于热采蒸汽发生器的工艺路线。在实验室的研究重点为：１．采出水的活性炭深度脱油；２．低含盐、负硬度油田采出水的石灰软化一离子交换树脂脱硬度；３．高含盐、非碳酸盐硬度油田采出水石灰－纯碱软化－离子交换树脂脱硬度。     

净化生活污水沼气池的工艺及其装置应用研究

本文就城镇生活污水净化沼气池的基本结构，设计要求及工艺特点作了试验研究，提出了单池多级环流式，单池多级上流式和多池多级上流式等前处理模式，使净化装置能因地制宜，实用，有效，便于清淘管理。