An End-to-End Network Evaluation Method for Differentiated Multi-Service Bearing in VPP

Analysis of VPP Service Communication Requirements

VPP services have the following characteristics: a large number of short-term services, a high concurrency rate, cross region services, and a large load fluctuation (Bian et al., 2020; Z. Liu et al., 2020). According to the different requirements of delay and bandwidth, VPP services can be divided into three types: time-sensitive small particles, time-insensitive small particles, and time-insensitive large particles. Their communication requirements are shown in Table 1 and are analyzed specifically through three typical applications.

They are analyzed through:

• 1.

  Frequency regulation: According to the automatic power generation control signal uploaded by the terminal in real time, VPP calculates the overall real-time power deficit of VPP and converts it into frequency regulation signal increment to realize frequency regulation response. Frequency regulation requires a communication bandwidth greater than 2Mbps and a communication delay of less than 50ms.

• 2.

  Peak regulation: VPP can integrate and dispatch the peak regulation resources on the demand side and participate in a form similar to traditional power plants in the peak regulation market. Its information source is mainly provided through energy storage charging, load increase, electric vehicle charging, and other ways. Peak regulating requires a communication delay of less than 10s and a communication bandwidth of less than 2Mbps.

• 3.

  Normal demand response: Normal demand response refers to the dynamic adjustment of the demand side's consumption pattern in the power market and its participation in the frequency regulation of the power grid, which is based on the electricity price and incentive policies. The delay requires less than 200ms, and the required communication bandwidth is from 0.01Mbps to 2Mbps.