A Resilient and Reliable Router for Power Grid Wide-Area Phase Measurement Systems

A phase measurement and router technology, applied to the phase angle between voltage and current, transmission system, measurement device, etc., can solve the problem of affecting SCADA state estimation and protection actions, increasing end-to-end data transmission delay, and destroying power grid security Stable operation and other issues, to achieve the effect of improving communication reliability, improving efficiency, and solving fast retransmission recovery
CN112491666BActive Publication Date: 2021-06-01ZHEJIANG LAB
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG LAB
Publication Date
2021-06-01

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Abstract

The invention discloses an elastic and reliable router for a wide-area phase measurement system of a power grid. The elastic and reliable router includes a Data packet processing module, a RetransReq data packet processing module, a RetransReport data packet processing module, a basic data packet processing module, and a multipath forwarding module. State Table Module, Content Storage Queue Module, and Physical Ports. The flexible and reliable router of the present invention realizes active lost data packet detection, and a single or batch retransmission mechanism, so that the lost data packet can be directly recovered from the upstream router of its path in the network, and the success rate and recovery time of the lost data packet are improved. Efficiency ensures the safe and stable operation of the grid wide-area phase measurement communication system.
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Description

technical field

[0001] The invention belongs to the technical field of reliable communication for a wide-area phase measurement system of a power grid, and in particular relates to an elastic and reliable router for a wide-area phase measurement system of a power grid. Background technique

[0002] In the modern power grid, a large number of phase measurement units (PhasorMeasurement Unit, PMU) are deployed in substations, distribution networks, etc. to monitor the grid lines and transformers. The data collected by the PMU is usually transmitted to the Phase data concentrator (Phasor Data Concentrator, PDC), the acquisition frequency can reach 10-60 times per second, and the end-to-end data transmission delay requirement can reach between 35-50ms. The data sampled by the PDC is crucial to the correct state estimation of the grid supervisory control and data acquisition system (SCADA).

[0003] However, due to link failures, network congestion, etc., the problem of data pack...

Claims

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