■ System Introduction
The panoramic monitoring system for new energy stations realizes the full process monitoring and control of controllable resources, sub/super synchronous oscillation monitoring, millisecond level real-time tracking, and lean control functions. The system collects real-time operational status information of each power generation unit in the new energy station, and connects to the power grid safety and stability control system and dispatch master station through the communication network to achieve real-time tracking of the status of new energy power generation units, controllable resource monitoring, secondary/super synchronous oscillation monitoring, lean control and other network related emergency monitoring and control functions during power grid faults.
■ Technical architecture
The safety and stability control layer device is interconnected with the power grid stability control system and emergency monitoring layer to achieve information transmission between the on-site power generation unit and the power grid; The emergency monitoring layer device is interconnected with the security and stability control layer and the source control terminal to achieve the aggregation of source control terminal information and the issuance of control commands; The source control terminal is interconnected with the emergency monitoring layer and power generation unit to achieve data collection and transmission, command reception and execution. The panoramic monitoring system is interconnected with the power grid stability control system through the power grid to achieve monitoring and control of new energy generation units; By interconnecting the scheduling data network with the scheduling master station, controllable resources and sub/super synchronous oscillation monitoring can be analyzed and evaluated.
■ Basic functions
Real time tracking of new energy failure process
Lean control of new energy
• Controllable resource monitoring
• Sub/super synchronous oscillation monitoring
• Emergency control requirements
■ System composition
Source control terminal
The data acquisition and control equipment installed on the wind turbine side or photovoltaic inverter side serves as a connecting link between the power generation unit and the emergency monitoring layer device, achieving functions such as rapid acquisition and transmission of operating information of the power generation unit, rapid reception and execution of control instructions, etc.
Emergency monitoring layer device/oscillation monitoring substation
The monitoring and control equipment installed in the new energy plant serves as a link between the safety and stability control layer and the source control terminal layer. It can also be used for interconnection with other equipment in the plant, achieving millisecond level aggregation and transmission of power generation unit information, rapid reception and issuance of emergency control instructions, collection and transmission of sub synchronous oscillation information, etc., to meet the perception and control needs of the new energy plant. Generally, it includes emergency monitoring devices and sub station devices for sub synchronous oscillation monitoring.