Research Article
Modeling and Control Strategy for Multiterminal Flexible DC Distribution Network with Echelon Utilization Power Battery
Table 1
The parameters and control mode of six-terminal ring-shape DC distribution network.
| | Terminal | Control mode | Load type | Voltage grade (kV) | Capacity (MW or MVA) | Comments |
| | 1 | Constant DC voltage and constant reactive power | AC power grid | AC: 10
DC: ±10 | Converter: 10 | Connect to infinity power supply | | 2 | Constant frequency, constant AC voltage | Load | AC: 0.38
DC: ±10 | AC load: 3 | Connected to AC resistive load | | 3 | Constant active power, constant reactive power | AC power grid | AC: 10
DC: ±10 | Converter: 10 | Connect to infinity power supply | | 4 | Constant low voltage DC voltage or constant power | Photovoltaic power generation, energy storage | DC: ±1.5 | Photovoltaic power generation: 4
Energy storage: 4 | Photovoltaic output according to the light curve | | 5 | Constant frequency, constant AC voltage | Synchronous generator, load | AC: 0.38
DC: ±10 | Load: 3
Synchronous generator: 1 | The load is variable | | 6 | Constant low voltage DC voltage or constant power | Wind power generation, energy storage, load | DC: ±1.5 | Wind power generation: 3
Energy storage: 4
Load: 1 | The fan control mode is changed from constant speed to constant power |
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