A power distribution network distributed voltage control system

Abstract

The utility model relates to a kind of distribution type voltage control system of power distribution network, including operating condition monitoring module, main control module, distributed control module, transformer control module, terminal equipment control module;Operating condition monitoring module, transformer control module, terminal equipment control module are all through wired or wireless with main control module and distributed control module and realize communication;The operating condition monitoring module is used to collect the real-time operation data of power distribution network;Main control module intelligent control transformer control module work;Distributed control module intelligent terminal equipment control module work;The transformer control module controls on-load voltage regulating transformer tap;The terminal equipment control module controls photovoltaic inverter, capacitor group;The utility model has realized global optimal voltage control only relying on local information, overcome the problem of high dependence on communication, solve the problem that real-time and accuracy cannot be considered simultaneously when voltage is controlled.

Claims

1. A distributed voltage control system for a power distribution network, characterized in that, It includes an operation status monitoring module, a main control module, a distributed control module, a transformer control module, and a terminal equipment control module; The operation status monitoring module communicates with the main control module via wired or wireless means; the operation status monitoring module communicates with the distributed control module via wired or wireless means; the main control module communicates with the transformer control module via wired or wireless means; and the distributed control module communicates with the terminal equipment control module via wired or wireless means. The operation status monitoring module includes a voltage information acquisition device for the on-load tap-changing transformer port, a photovoltaic operation information acquisition device, and a node voltage acquisition device. The on-load tap-changing transformer port voltage information acquisition device uses the ABB REF615 feeder protection and control device, which receives the transformer port voltage signal through the secondary side of the PT to collect online data of the on-load tap-changing transformer port voltage; the photovoltaic operation information acquisition device uses the built-in data acquisition unit of the Siemens SINAMICS PV inverter, which uploads real-time output data through the RS485 interface to collect online photovoltaic output data; the node voltage acquisition device uses the Schneider PM800 series power quality monitor, which is connected to the distribution network node through the voltage transformer to collect online node voltage data. The main control module and the distributed control module use the ATT7022E chip; The transformer control module uses an EPC-P3066 industrial computer, and the terminal equipment control module uses Siemens SICAM MIC products.

2. The distributed voltage control system for a power distribution network according to claim 1, characterized in that: The main control module is used to calculate the data parameters required for voltage adjustment in real time based on all the data collected by the operation status monitoring module, obtain the optimal control action, and send control signals to the transformer control module to intelligently control the operation of the transformer control module.

3. A distributed voltage control system for a power distribution network according to claim 1, characterized in that: The distributed control module is used to calculate the data parameters required for voltage adjustment in real time based on some data collected by the operation status monitoring module, obtain the optimal control action, and send control signals to the terminal equipment control module to intelligently control the operation of the terminal equipment control module.

4. A distributed voltage control system for a power distribution network according to claim 2, characterized in that: The transformer control module can adjust the tap position of the on-load tap-changing transformer according to the control signal from the main control module.

5. A distributed voltage control system for a power distribution network according to claim 3, characterized in that: The terminal device control module can adjust the reactive power output of the photovoltaic inverter, the power of the energy storage converter, and the number of capacitor banks in operation based on the control signals from the distributed control module.

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