Multi-source power distribution network reactive voltage multi-layer domain intelligent device clustering linkage system

Abstract

The invention relates to a multi-source power distribution network reactive voltage multi-layer domain intelligent device clustering linkage system, which is used for linkage control of intelligent devices in a power distribution network and comprises a monitoring terminal and a plurality of power distribution network nodes which are connected with the monitoring terminal and used for detecting electric energy parameters of a power distribution station. The power distribution network node comprises a voltage detection module, a current detection module, an analog-to-digital converter, an amplification circuit, a data processing module and a data transmission module, wherein the voltage detection module and the current detection module are respectively connected to the data processing module through the analog-to-digital converter and the amplification circuit in sequence, the data processing module is connected to the monitoring terminal through the data transmission module, and the monitoring terminal is connected to each intelligent device in the power distribution network through a GPRS module. Compared with the prior art, layered linkage control can be achieved, and the voltageadjusting effect is good.

Description

technical field [0001] The invention relates to the technical field of distribution network monitoring, in particular to a multi-source distribution network reactive voltage multi-layer domain intelligent device clustering linkage system. Background technique [0002] With the rapid development of science and technology and the national economy, the power quality problems caused by a large number of unbalanced and non-linear electrical equipment have attracted widespread attention. Safe and reliable supply. By realizing the monitoring of the power quality of the distribution network, the real-time monitoring and control of its power quality problems has important practical value for the supervision and improvement of the power quality of the whole network. [0003] In the multi-source heterogeneous distribution network, it not only contains traditional power sources such as thermal power and hydropower, but also various types of DG (photovoltaic, wind turbines, gas turbines...

AI Technical Summary

Problems solved by technology

[0004] One is that the information system is not fully used to timely discover the unbalanced three-phase load of the distribution transformer, which leads to the offset of the neutral point voltage and the low voltage of the heavy-loaded one-phase;

[0005] The second is that the low voltage of users was not detected proactively in time or found that there was no corresponding auxiliary analysis and decision-making system to automatically generate treatment plans and reference countermeasures, resulting in many low voltage users before the seasonal load surge

[0006] The third is that there are asynchronous motors and distribution transformers in low-voltage rural areas, and the load rate is not high, and the reactive load rate is relatively high, so the power factor is low. When the compensation parallel capacitor is insufficient, the line will transmit a large amount of reactive power, and the The resulting voltage loss causes the voltage to be low, resulting in a low voltage situation

However, these voltage management devices have their own control technology and background data transmission function. These technologies are mastered by different units, lack of integration, the degree of information integration is not high, the data interface is not standardized enough, and the operators cannot grasp the real-time work of power distribution operation. However, the operation is cumbersome, the work efficiency is low, and the management level of power distribution dispatching operation is still low.

[0009] In the context of the gradual maturity of network technology, the traditional distribution network power quality control system has problems such as imperfect equipment management and difficult maintenance, and most of the existing systems deal with direct control of a single command. To be in-depth

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