【作者】 都健刚；

【导师】 周步祥；

【作者基本信息】 四川大学 ， 电力系统及其自动化， 2003， 硕士

【摘要】 随着电力系统的飞速发展，电网规模日益扩大、网络结构日趋复杂，网络呈现各种接线并存的复杂环网，再加上系统运行方式的变化多样，各种电压等级互相交错，都给现有的传统手工作业方式的电网保护整定计算和定值管理带来了很大困难。尤其输电线路保护整定值受系统运行方式、设备检修等导致的网络参数和结构变化影响较大，使得其整定计算更加复杂繁琐，重复计算工作量非常大，耗时较长，而且还不一定能够得到最优方案。本文结合目前继电保护定值整定的特点，在对现有技术进行广泛分析的基础上，在继电保护定值计算和管理中引入了自适应的概念，它的目的是无论电力网络如何的发生变化，网络里所有元件(线路)的继电保护定值等能通过计算和管理适应这种变化而保持系统内保护的完整性。通过编制一整套完整的发电厂继电保护定值计算和管理系统来验证了自适应技术在继电保护定值计算和管理中的有效性和实用性。 为了清楚的描述自适应技术在继电保护定值计算和管理中发挥的作用，我们建立了一个完整的定值计算和系统来进行说明。首先定义了整个系统的体系机构、系统的数据模型。系统体系结构里，建立了构成整个系统所需要的节点模型，为系统的实现提供了操作的对象；系统的数据模型定义了系统内各种数据在对象(节点)里的分布，为系统的实现提供必须的数据支持。通过这两个模型，可以清晰的描述一个复杂信息系统及其数据结构。 在建立了系统结构的基础上，进一步详细探讨了继电保护定值计算和管理中需要自适应技术的几个主要问题，即：自适应定值计算和管理问题；复故障计算问题；复杂环网保护配合问题。其中自适应定值计算和管理问题分类建立不同元件(线路)自适应继电保护定值计算的数学模型及其实现的理论；复故障计算问题解决了计算电网中各种故障(包括短路、断线)的计算问题;复杂环网的保护配合问题解决了大规模复杂环网断点的求取以及主/后备保护整定配合的问题。通过这个三个方面的研究，就可以实现建立在节点基础上的自适应继电保护定值计算问题。 根据我们所建立的整个系统的框架和所面对的对象，结合我们已经解决的几个实现自适应保护计算的问题，我们用程序框图描述了整个系统的实现过程以及各个功能模块实现的流程。以此来说明我们所建立的这套理论可以很方便的利用计算机技术实现，具有很强的实际操作可行性。 最后，我们结合我们利用本文所介绍的理论实现的一个具体电力系统的定值整定计算和管理的实际例子，验证了利用自适应技术建立的继电保护定值计算和管理在实际电力生产和运行中的有效性和实用性。更多还原

【Abstract】 The fast development of the electric power industry makes the scale of power network larger and larger, and its network more complex. The result of this is that the power network becomes a complex multiloop network, in addition to the variety of operation and the interleaving of voltage grades. Such these situations bring forward much difficulty to the calculation and management by traditional manual operation of relay protective settings. Especially, the relay protective settings of transmission line are greatly affected by network parameters and framework changing resulted from operational mode of system and the examining and repairing of equipment. So it makes the calculation of relay protective settings more complicated and the more repeated computation work and lasts more time, while the best plan can’t always be achieved. My article integrated the characteristic of the present relay protective settings calculation on the basis of comprehensive analysis with the present technology and management system, introducing the adaptive concept. Its purpose is that the relay protective settings of all the components or lines in the network can uphold protective integrality following the change no matter however the network changes. After programming an integrated relay protective settings calculation and management system for power plant, the validity and practicability of adaptive relay protective settings theory is proved.In order to clearly describe action of adaptive technology in relay protective settings calculation and management, we set up an integrated management system. Firstly, the article defines structure and the data model of this system. In system structure, the model of nodes, which afford operational object, are established. The data mode of system defines distributing of every data with object in the system in order to provide essential data support of realizing system. A complex information system and its data structure entirely and clearly are described with these two models.Based on system model, the article ulteriorly discusses a few issues of requiring the adaptive theory in relay protective settings calculation and management, such asadaptive relay protective settings calculation and management, complex fault calculation and coordination of directional protective relays in multiloop networks. The adaptive protective relays categorically sets up the math model and realized theory of adaptive relay protective settings calculation. The calculation of complex faults solves the computation of all kinds of faults involved in power network. The coordination of directional protective relays in multiloop networks solves the calculation of break points set and the coordination of main protection with backup protection. Through these three problems accomplished, we can realize the adaptive relay values calculation on the basis of nodes.According to the systemic framework and oriented object established by us, combined with the problems solved for realizing adaptive relay calculation, we make use of flow chart to describe the achievement of program and every function model. The purpose is to show that the theory established may be realized with computer technology and has a strong feasibility.At last, according to a actual power system relay values calculation case, which is realized on the basis of our theory, the validity and practicability of adaptive calculation and management are proved in practical production and operation of power.Index Terms: adaptive technology, protective relay setting calculation and management, complex fault, mutiloop network, the coordination of main protection with backup protection更多还原