Active Power Distribution Network Solution--CYG Sunri Co., Ltd

Active Power Distribution Network Solution

OVERVIEW

With the inclusion of "Carbon Dioxide Emission and Carbon Neutrality" into the China national strategic goals, large-scale of strongly random and volatile new energy is connected to power grid and a large number of interactive devices such as electric vehicles and distributed power sources are connected to power distribution network. With the continuous extension and expansion of power distribution network, the topology of the traditional overcurrent protection becomes increasingly complex, which makes it difficult to coordinate and set, causing the contradiction of the "four characteristics" of relay protection to become increasingly prominent.

The Active Power Distribution Network Solution based on 5G dual main protection independently developed by CYG SUNRI has the characteristics of simple setting, reliable operation, adaptability to multi-terminal power supply access, and strong selectivity of fault sections. Its excellent quick-acting, sensitivity and selectivity are well suited to power distribution network trends.

APPLICATION SCENARIOS

10kV power distribution network cable lines

FEATURES

High-sensitivity and highly quick-acting multi-redundant protection strategy

Adopts dual main protection solution, supports full-line phasor and transient state quantity differential protection location technology, full coverage of short circuit/grounding; it can flexibly adapt to line topology changes, various grids and distributed energy connections, comprehensively improving power distribution network fault location accuracy, no need for range coordination, and ms-level isolation of faults in the area

Select preferable intelligent power supply restoration

According to the load memory, the load to be transferred can be calculated; according to the real-time capacity margin and operation mode requirements of each connected power supply, selects preferable self-switching connected power supply to reduce the scope of power outages in non-faulty areas and restore power in seconds.

Economical and rapid deployment of wireless networ

5G communication replaces optical fiber, no need to consider external factors such as optical fiber corridors; channel resources are abundant with on-demand access; short construction period is more conducive to project landing and promotion; 5G communication only needs to carry out the operation and maintenance of 5G communication equipment at the substation, effectively reducing operation and maintenance costs and improving efficiency; 5G construction also meets the needs of the China's New Infrastructure Construction.

Intelligent state monitoring fully supported by the Internet of Things

Supports detection and perception for partial discharge, cable head temperature, switch control circuit and connections of various types of sensors, realizes comprehensive monitoring of equipment state, supports equipment state maintenance; realizes local data edge computing analysis, after edge aggregation, data are uploaded to the main station through 101/104, cloud edge collaborative computing, and complies with China’s "New Infrastructure Construction" and "Internet of Things" new technology direction.