在美国和海外，提供电力和热能的燃气热电厂在新增化石发电容量中所占的比例越来越大。这些发电厂很受欢迎，不仅因为它们建造成本较低，而且因为它们效率高，运行和维护成本低于使用传统煤基朗肯循环的发电厂。用于控制建设热电厂初始成本的方法之一是尽量减少电厂中各种系统规定的备用设备数量和单个部件的设计容量方面的冗余。从长远来看，这种策略的总体效果可能会导致热电厂的可靠性和可用性降低。运行热电厂提供了各种技术、设备和操作实践。 虽然较新的热电厂通常以90%或更高的可靠性运行，但由于设备故障过多或维护策略不足，较旧的热电厂可能无法实现这种性能。由于没有适当的维护计划，即使是较新的热电厂也很容易长期受到可靠性和可用性恶化的影响。本文描述了在不牺牲长期可靠性的情况下，将维护资源用于降低当前维护成本，同时保持高可用性的机制。讨论的维护策略是那些能够为提高热电厂可靠性、可用性、容量、成本控制和安全性提供最大效益的策略。单位:双引文:研讨会，ASHRAE交易，1998年，第卷。 多伦多市第二部分104号

Gas-fired cogeneration plants supplying power and thermal energy make up an increasing percentage of new fossil generation capacity additions, both in the U.S. and overseas. These plants are popular, not only because they cost less to build, but also because they are highly efficient and their operation and maintenance costs are lower than plants using the traditional coal-based Rankine cycle. One of the methods being used to contain the initial cost of building cogeneration plants is to minimize redundancy both in the quantity of spare equipment specified for the various systems in the plants and in the design capacity of individual components. The overall effect of such a strategy may lead to reduced reliability and availability of the cogeneration plant in the long term.Operating cogeneration plants present a variety of technologies, equipment, and operating practices. While newer cogeneration plants routinely operate at a reliability of 90% or higher, older plants may not be able to achieve such performance due to excessive equipment breakdowns or inadequate maintenance strategies. By not having the appropriate maintenance programs in place, even newer cogeneration plants are vulnerable to deteriorating reliability and availability in the long term. This paper describes mechanisms for directing maintenance resources toward reducing current maintenance costs while maintaining high availability without sacrificing long-term reliability. The maintenance strategies discussed are those that can provide the maximum benefits for improving cogeneration plant reliability, availability, capacity, cost control, and safety.Units: Dual