Centralized heat supply control system

The invention relates to a centralized heating control system, in particular to a centralized heat supply transportation-distribution energy saving system suitable for a secondary network. The invention aims at overcoming the defects of the background art and providing a centralized heat supply transportation-distribution energy saving system suitable for a secondary network. The energy saving system has the characteristics of high efficiency, large frequency conversion amplitude, energy saving, has simple and reasonable structure as well as accurate and reliable use. The heat supply energy saving control system comprises a circulation pipeline communicated with a heat exchanger, and the circulation pipeline is provided with a plurality of branch pipelines connected with heat users. The heat supply energy saving control system is characterized in that the circulation pipeline is provided with a circulation water pump on which a frequency conversion controller for controlling the frequency conversion of the circulation water pump is arranged; and the branch pipelines are provided with temperature control regulating valves connected with the heat users.