LV Supervision

OPTIMIZING THE EDGE OF THE GRID

Low Voltage (LV) network is the last unknown limit of the distribution grid. There are 10 million Km of distribution lines in Europe, out of which 60% are LV lines. Currently there is an important lack of visibility of what is happening in those lines. Smart meters deployed in the LV line offer information for grid operation in addition to billing information. In this context, advanced metering infrastructure (AMI) will be a main enabler of “LV network supervision”. Several solutions are being developed based on the deployment of smart devices in different LV points. These supervision systems offer an enormous amount of information to be integrated and processed in the corporate information systems of the distribution companies. Therefore a redefinition of the operation structure and evolution of the information systems is needed. LV network supervision solutions are a cost-effective alternative to increase the distribution grid capacity due to better control and monitoring of the LV grid.

The need

Currently there is an important lack of visibility of what is happening in LV distribution lines.

Smartmeters deployed in the LV line offer information for grid operation in addition to billing information. In this context, advanced metering infrastructure (AMI) will be a main enabler of “LV network supervision”.

The challenge

Standardization frameworks for LV supervision elements are required in order to ensure interoperability  +  a redefinition of the operation structure and evolution of the information systems is needed.

It is important to adapt the information systems to the enormous amount of data obtained from LV distribution grids. Being able of combining this information with data coming from other sources (such as geographical information, meteorological predictions or distributed energy generation predictions) will provide the distribution companies the knowledge needed to successfully operate the network.

Applications to integrate on top of advanced metering infrastructure (AMI)

Additional applications of smart meters  will provide key information to allow distribution companies to improve their LV network operation, enabling:

  • Energy balances with the aim of identifying losses (both technical and non-technical).
  • Load level control per phases and feeders, so load unbalances can be detected.
  • Preventive supervision of the network. This way status information can be obtained before clients call making complaints.
  • Asset management could be implemented integrating each point into the Smartgrid. Utilities could manage the lifecycle of their assets.

And sensors scattered over LV grid will allow voltage control operation (LV elements to be monitored inside the Secondary Substations and at intermediate LV grid points).

Conclusion

  • LV network supervision solutions are a cost-effective alternative to increase the distribution grid capacity due to better control and monitoring of the LV grid.
  • They can be integrated on top of advanced metering infrastructure (AMI).
  • A redefinition of the operation structure and evolution of the information systems is needed.

ZIV LV Solutions

LV advanced supervision systems enable the implementation of advanced low voltage monitoring functionalities such as blowout fuses, fraud detection, feeders load unbalances and quality of supply assessment:  Advanced LV supervision, LV board  supervision integration, Customized cabinet integration.

 

Literature:

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