摘要：【中文】本发明涉及发电机组技术领域，尤其涉及基于低压缸光轴供热技术的供热方法及供热系统，以解决现有低压缸光轴供热技术不具有调峰能力的技术问题。供热方法包括汽轮机的中压缸排汽至少分为两部分，第一部分中压缸排汽进入热网加热器供热，第二部分中压缸排汽进入附加汽轮机作功，第一部分中压缸排汽和第二部分中压缸排汽的分配比可根据供热负荷和发电负荷的需求进行调节。供热系统包括汽轮机、热网加热器、附加汽轮机和控制器，汽轮机包括高压缸、中压缸和低压缸，低压缸内安装光轴转子；中压缸的排汽口与附加汽轮机的蒸汽入口和热网加热器的汽侧入口均可选择地且流量可调地连通，并且该可选择地且流量可调地连通由控制器控制。 【EN】The invention relates to the technical field of generating sets, in particular to a heating method and a heating system based on a low-pressure cylinder optical axis heating technology, and aims to solve the technical problem that the existing low-pressure cylinder optical axis heating technology does not have peak shaving capacity. The heat supply method includes that the steam exhaust of the intermediate pressure cylinder of the steam turbine is divided into at least two parts, the steam exhaust of the intermediate pressure cylinder of the first part enters the heating network heater for heat supply, the steam exhaust of the intermediate pressure cylinder of the second part enters the additional steam turbine for work, and the distribution ratio of the steam exhaust of the intermediate pressure cylinder of the first part and the steam exhaust of the intermediate pressure cylinder of the second part can be adjusted according to the requirements of heat supply load and power generation load. The heat supply system comprises a steam turbine, a heating network heater, an additional steam turbine and a controller, wherein the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder, and an optical axis rotor is arranged in the low-pressure cylinder; the steam outlet of the intermediate pressure cylinder is in selective and flow-regulated communication with both the steam inlet of the additional steam turbine and the steam-side inlet of the heat network heater, and the selective and flow-regulated communication is controlled by a controller.