BS architecture based distributed power supply grid-connected monitoring device design

Abstract

The invention discloses a BS architecture based distributed power supply grid-connected monitoring device design. The device comprises a physical equipment layer, a Web function layer and a Web monitoring layer, the Web function layer is electrically coupled with the physical equipment layer and the Web monitoring layer, and the distributed power supply grid-connected monitoring system based on the B / S architecture is designed. According to the monitoring system, hierarchical design and modular development are adopted, the problem that a household DER protection system is poor in flexibility is solved, and direct monitoring from a client browser to a monitoring platform is achieved. The construction of a monitoring main station, a substation and a special communication network is omitted,and the flexibility and economy of the monitoring system are ensured; on the premise that investment is low, the requirement for distributed power supply grid-connected monitoring is met, a user can conveniently check the operation state anytime and anywhere, and safe and reliable operation of the DER is guaranteed. A foundation is laid for a VPP mode in which DER participates, and the developmentof distributed power supply grid connection in the intelligent power distribution network is promoted.

Description

technical field [0001] The invention relates to the technical field of distributed power intelligent monitoring devices, in particular to the design of a distributed power grid-connected monitoring device based on BS architecture. Background technique [0002] At present, the power grid structure is usually dominated by large units, high voltage, and centralized. Failure of a certain node will affect the safe operation of the entire power grid. The proposal of smart distribution network, especially to support a large number of distributed power sources, can make up for the shortcomings of the large power grid operation mode. DER is greatly affected by natural factors, and has obvious fluctuations and intermittences. A large number of DERs will bring challenges to power system peak regulation and frequency regulation, grid-connected control, operation scheduling, power forecasting, and power supply quality. At present, the more commonly used method is to limit the grid-conn...

AI Technical Summary

Problems solved by technology

Although these monitoring modes can play a good role in monitoring the safe operation of DER, they are not suitable for small-capacity home-based DER grid-connected monitoring due to excessive investment, low cost performance, and poor interaction.

[0004] 2. In the prior art, the current household DER grid-connected system usually does not have a monitoring device, which is mainly replaced by the grid-connected inverter or the metering protection device of the point of public connection (PCC), which lays the foundation for a large number of DER grid-connected Security risks

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