The core equipment of gas-fired cold, hot and electric distributed energy system includes gas generator set, absorption cold (hot) water unit and waste heat boiler. Auxiliary equipment includes various pumps, valves, cooling towers, cooling fans, distribution cabinets, etc. How to make these devices operate more energy-saving and economically, the control system is the key.

燃气发电机组在运行过程中产生两种能源：电力能源和热力能源。更加理想和经济的方案是100%利用电力能源和热力能源。但现实应用中，电力能源和热力能源的需求是不断变化的。电力能源我们可以通过上网的方式将多余电力能源卖给电力公司，但多余的热力能源我们不能利用，只能通过排烟系统和散热水箱对空排放。因此分布式能源项目中，项目的经济可行性是重要方面。

During the operation of gas-fired generator sets, two kinds of energy are generated: electric energy and thermal energy. A more ideal and economical solution is to make 100% use of electric energy and thermal energy. However, in practical applications, the demand for electric energy and thermal energy is constantly changing. Electric energy we can sell excess electric energy to power companies through the Internet, but we can't use the excess thermal energy, which can only be discharged into the air through the smoke exhaust system and cooling water tank. Therefore, in the distributed energy project, the economic feasibility of the project is an important aspect.

我们需要了解项目的电力需求和热力需求，设计出发电机组更加经济的运行方案。是以电定热，还是以热定电。

We need to understand the power demand and thermal demand of the project and design a more economical operation scheme for the starting generator set. Whether to determine heat by electricity or electricity by heat.

当市场上电力能源经济性能较好时，项目应用将以能发出更多的电能为主要目标进行设计，同时考虑更大程度上地进行余热利用。当热力能源过剩时对空排放。项目设计中将以电定热；当项目应用中热力能源经济性能较好时，项目设计中将以满足用户所需要的热为主要需求，在产生热的同时项目中多余的电力能源将通过与市电并网的方式向市网输送。这就是以热定电的设计方式。在这种项目应用中一定要协调市电部门，获得上网许可证。确定了以热定电或以电定热以后，我们将设计合适的控制系统控制燃气发电机组按要求正常运行。

When the economic performance of electric energy in the market is good, the project application will be designed with the main goal of generating more electric energy, and consider the utilization of waste heat to a greater extent. When there is excess thermal energy, air emissions. The heat will be determined by electricity in the project design; When the economic performance of thermal energy in the project application is good, the project design will take meeting the heat required by users as the main demand. While generating heat, the excess electric energy in the project will be transmitted to the municipal power grid through grid connection with the municipal power. This is the design method of determining electricity by heat. In the application of such projects, we must coordinate with the municipal power department and obtain the Internet license. After determining whether the power is determined by heat or by electricity, we will design an appropriate control system to control the normal operation of the gas generator set as required.

燃气冷、热、电分布式能源项目的控制系统一般分为显示模块、计算与控制模块、报警保护模块和数据记录模块四个功能模块。

The control system of gas cooling, heating and electricity distributed energy project is generally divided into four functional modules: display module, calculation and control module, alarm protection module and data recording module.

1)显示模块： 现代化的设备都有自己的控制系统。任何单独的设备都可以自动按照预先设定的工况运行。同时所有的运行参数都可以通过数据线上传到上位机中。燃气冷、热、电分布式能源项目的控制系统显示模块就是勾勒出整个系统的所有设备，通过画面，直观地显示出所有设备的运行状态和运行参数。

1) Display module: modern equipment has its own control system. Any individual equipment can automatically operate according to the preset working conditions. At the same time, all operating parameters can be uploaded to the upper computer through the data line. The display module of the control system of the gas cooling, heating and electricity distributed energy project is to outline all the equipment of the whole system, and intuitively display the operation status and operation parameters of all equipment through the screen.

2)计算与控制模块： 主要是通过传感器计算系统的运行状态。并根据项目要求设计 所需要的目标状态。将系统的运行状态与目标状态进行比对后发出调节指令。为了确保功能的稳定与准确，建议控制系统采用双闭环控制。

2) Calculation and control module: it mainly calculates the operation state of the system through sensors. And design the required target state according to the project requirements. After comparing the running state of the system with the target state, issue the adjustment command. In order to ensure the stability and accuracy of the function, it is recommended that the control system adopt double closed-loop control.

3)报警保护模块： 主要功能是当系统遇到危险状态时可以报警提示，严重时自动关闭某些设备或者使整个系统停止运行，以保护系统不受到更大的伤害。系统中自动停机的危险状态有：高水温、低油压、超速、汽缸爆震、燃气泄漏等。

3) Alarm protection module: the main function is to give an alarm when the system encounters a dangerous state, and automatically shut down some equipment or stop the whole system in case of serious conditions, so as to protect the system from greater harm. The dangerous states of automatic shutdown in the system include: high water temperature, low oil pressure, overspeed, cylinder knock, gas leakage, etc.

4)数据记录模块： 用记录系统运行的数据和参数，以及历史报警记录。通过记录数据分析系统的支持状态，做好维护和保养计划。

4) Data recording module: it is used to record the data and parameters of the system and historical alarm records. Analyze the support status of the system by recording data, and make maintenance plans.