基于间歇性可再生能源并网的智能电网安全管控研究

发布时间：2018-06-18 03:11

本文选题：安全管控 + 智能电网　；参考：《华北电力大学(北京)》2017年硕士论文

【摘要】：电力是整个国民经济的基础,电网安全是电力工业永恒的主题。当前,我国电网建设呈现向高电压、自动化、大联网的趋势,电网安全将面临电源、用户、体制变革、新技术应用以及自然灾害、外力破坏等因素影响,安全风险管理的难度更大、要求更高。智能电网的建设为可再生能源发电并网提供了必要的基础条件,然而,大规模间歇性可再生能源的并网,使得电力系统的运行控制更为复杂,电网安全问题日益突出。为确保智能电网的安全可靠运行,有必要针对间歇性可再生能源并网后造成的安全性影响,对智能电网的安全状况进行全面分析与评价,并提出符合电力行业特点的智能电网安全管控策略。本文基于安全管理理论,对基于可再生能源并网的智能电网安全管控进行系统、科学的研究。首先,归纳梳理了国内外关于可再生能源并网、智能电网发展、电网安全管理等相关研究内容。其次,阐述安全管理的相关理论,分析可再生能源发电与智能电网安全的关系,为研究智能电网安全管控策略奠定理论基础。再次,介绍可再生能源并网的发展状况和运行控制,探讨可再生能源接入智能电网造成的安全性影响,进而全面分析智能电网安全的影响因素,为构建安全评价体系和制定安全管控策略提供依据。然后,引入安全监控点的概念,建立智能电网安全的评价指标体系,利用可信性理论和改进的层次分析法构建智能电网安全评价模型,科学量化智能电网安全等级,并据此从安全影响因素中筛选出安全监控点。在此基础上,将智能电网安全评价指标体系和评价模型应用于华北地区某电网的安全评价中,通过实证分析验证了评价体系的有效性和实用性。最后,从安全体系建设、安全风险监控、安全管理水平三方面,针对性地提出了基于安全监控点的智能电网安全管控策略。本文结合可再生能源发电间歇性、随机性的特点,构建了基于可再生能源并网的智能电网安全评价体系,评价智能电网安全等级和筛选安全监控点,最后针对安全监控点提出了智能电网安全管控策略。安全评价体系的构建能够科学、全面地衡量智能电网的安全水平,安全监控点的筛选可辅助电力有关部门采取针对性的预防措施降低系统风险,安全管控策略的提出可为电力企业的安全生产、管理以及决策提供了切实可行的方法参考。
[Abstract]:Electric power is the foundation of the whole national economy, and power grid safety is the eternal theme of electric power industry. At present, the power grid construction in our country is showing the trend of high voltage, automation and large-scale networking. Power grid security will be affected by power supply, users, system change, application of new technology, natural disasters, external force damage and so on. Security risk management is more difficult and demanding. The construction of smart grid provides the necessary basic condition for the renewable energy generation to be connected to the grid. However, the large-scale intermittent renewable energy grid connection makes the operation and control of power system more complicated, and the security problems of power grid become more and more serious. In order to ensure the safe and reliable operation of the smart grid, it is necessary to analyze and evaluate the security situation of the smart grid in view of the security impact caused by the intermittent renewable energy grid. And put forward the smart grid security control strategy in line with the characteristics of the power industry. Based on the theory of security management, this paper makes a systematic and scientific research on the security control of smart grid based on renewable energy grid. Firstly, the related research contents of renewable energy grid connection, smart grid development, grid security management and so on are summarized. Secondly, the related theory of safety management is expounded, and the relationship between renewable energy generation and smart grid security is analyzed, which lays a theoretical foundation for the study of smart grid security management and control strategy. Thirdly, this paper introduces the development and operation control of renewable energy grid, discusses the security impact caused by the renewable energy access to smart grid, and then analyzes the influencing factors of smart grid security. It provides the basis for constructing the safety evaluation system and formulating the safety control strategy. Then, the concept of security monitoring point is introduced, the evaluation index system of smart grid security is established, and the security evaluation model of smart grid is constructed by using credibility theory and improved analytic hierarchy process, and the security grade of smart grid is scientifically quantified. According to this, the safety monitoring points were screened out from the safety influencing factors. On this basis, the smart grid security evaluation index system and evaluation model are applied to the security evaluation of a power grid in North China, and the effectiveness and practicability of the evaluation system are verified by empirical analysis. Finally, the security control strategy of smart grid based on security monitoring point is put forward from three aspects: security system construction, security risk monitoring and security management level. Based on the characteristics of intermittent and randomness of renewable energy generation, a security evaluation system of smart grid based on renewable energy grid connection is constructed in this paper, which can evaluate the security grade of smart grid and screen safety monitoring points. Finally, the security control strategy of smart grid is proposed for security monitoring points. The construction of safety evaluation system can scientifically and comprehensively measure the security level of smart grid, and the screening of safety monitoring points can assist relevant power departments to take targeted preventive measures to reduce the system risk. The safety control strategy can provide a practical reference for the production safety, management and decision making of electric power enterprises.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F426.61;TM08;TM76

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