Hangzhou Yungu Technology Corporation Ltd.

水力失调是供热系统能耗大的主要原因,但现有的比例调节法、补偿调节法和回水温度法等算法仅停留在局部热用户的负荷控制上,并不能完全体现二次网平衡的协同控制要求。提出L值平衡控制理论和算法,将L值定义为结合散热体的供温、回温等实际过程参数的控制变量,并从L值的特性、L值参数优化等方面简介L值平衡控制算法,阐述基于L值平衡控制算法的二次网平衡,结合项目背景、平衡效果、节能效果进行案例应用分析。结果表明:L值平衡控制理论和算法可用于二次网水力平衡的协同控制,嵌入热用户测控终端以实现对二次网末端的水力和热力的合理调度与分配,实现用热需求和热负荷的协同。二次网L值平衡控制算法简单且有效,所需的过程参数少且获取容易,算法可直接嵌入在热用户调控设备内,具有高度自治性、稳定性、可靠性和普遍适用性。结合室温软测量技术,L值平衡控制算法可实现室温的精准控制、满足二次网平衡所需的全自动控制等功能,并可为现场调试和控制提供指导。

Hydraulic disorder is the main reason of the high energy consumption of the heating system, but the exist⁃ing algorithms such as proportional regulation, compensation regulation and backwater temperature only stay in theload control of local heat users, and can not fully reflect the collaborative control requirement of secondary networkbalance. In this paper, the theory and algorithm of L⁃value balance control is proposed firstly, and the L⁃value is de⁃fined as the control variable combining the actual process parameters such as the supply and back water temperature ofthe radiator. The L⁃value balance control algorithm is introduced from the characteristics of the L⁃value and the pa⁃rameter optimization of L⁃value, and the secondary network balance based on the L⁃value balance control algorithm isexpounded. The case application analysis is carried out in combination with the project background, balance effectand energy⁃saving effect. The results show that the L⁃value balance control theory and algorithm can be used for thecollaborative control of the hydraulic balance of the secondary network, the heat user measurement and control termi⁃nal is embedded to realize the reasonable dispatching and distribution of the hydraulic and thermal power at the end ofthe secondary network, the coordination of the heat demand and heat load can be realized. The L⁃value balance con⁃trol algorithm of the secondary network is simple and effective, and the required process parameters are few and easyto obtain. The algorithm can be directly embedded in the thermal user control equipment, and has high autonomy,stability, reliability and universal applicability. Combined with the soft measurement technology of room temperature,the L⁃value balance control algorithm can realize the accurate control of room temperature, meet the automatic controlrequired for secondary network balance, and provide guidance for on⁃site commissioning and control.

丁云. 供热管网 L 值平衡控制算法的研究和应用 [J]. 煤质技术, 2024, 39 (1): 41-46.

DING Yun. Study and application of hydraulic balance control based L⁃value in heating networks [J]. Coal QualityTechnology, 2024, 39 (1): 41-46.