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Modelling and transient simulation of a supercritical coal-fired power plant: Dynamic response to extended secondary control power output

机译：超临界燃煤电厂的建模和瞬态仿真：对扩展的次级控制功率输出的动态响应

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摘要

Conventional generation units are subject to a changing economic environment and have to adjust their role for modern society's power generation. With substantial amounts of renewable energy production encountering the markets, thermal power plants are facing an increased need for flexible operation and decreasing revenues from selling electricity. Technical adaptations are necessary, though have to be redeemed within very short time spans to secure the plant's profitability. Dynamic simulation in this context serves as a helping tool to evaluate technical improvements and is an established tool in industry as well as in research institutes. This paper focuses on the detailed modelling of a hard coal-fired power plant using the thermohydraulic simulation code Apros. Characteristic of this model is the implementation of the major part of the control system together with the physical model. The comprehensive model enables detailed dynamic simulations with very small error values to process data, as to be seen in the validation. As an application example, the extension of a qualified load jump for secondary control power is realised. The dynamic simulation is thereby used to clarify necessary modifications in the control system and to assess the implications on plant operation. (C) 2017 Elsevier Ltd. All rights reserved.
机译：常规发电机组要适应不断变化的经济环境，并且必须调整其在现代社会发电中的作用。随着大量可再生能源生产进入市场，火力发电厂正面临着对灵活运营的日益增长的需求，并减少了售电收入。尽管必须在很短的时间内兑现以确保工厂的盈利能力，但必须进行技术改造。在这种情况下，动态仿真可作为评估技术进步的帮助工具，并且是工业界和研究机构中的既定工具。本文着重于使用热工水力仿真代码Apros对硬煤电厂的详细建模。该模型的特征是控制系统的主要部分以及物理模型的实现。全面的模型可以进行详细的动态仿真，并以很小的误差值处理数据，如验证所示。作为一个应用示例，实现了针对次级控制电源的合格负载跳变的扩展。动态仿真因此可用于阐明控制系统中的必要修改，并评估对工厂运行的影响。 （C）2017 Elsevier Ltd.保留所有权利。

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