Monitoring and control

Monitoring and control

Sections

Distribution Management System 

 

  •  Distribution management system is modern software that helps monitor, control, and optimise electrical distribution networks.
  • ·It helps in improving grid readability, enhancing efficiency, and reducing downtime.
  • 100% DSS & 43% Consumer substations controlled through DMS.
  • Monitoring and Control of electrical network through SCADA. Load Management Advanced Reporting function.
  • Redundancy at key servers, Separate server for program development, training, IED management and QA testing
  • System interconnection with GIS, PI  & Transmission SCADA.
  • System handles 45000 data points.

Features of DMS

 

- Fault Location, Isolation, and Service Restoration (FLISR)- FLISR automatically  determines, within seconds of detecting a fault, the location of the fault using both fault data available from modern relays and fault detectors. It then proposes switching steps to isolate the fault and restore the distribution feeder upstream and downstream of the isolated fault thereby rapidly reducing the number of outaged customers and dropping the total outage minutes. For fault identification system takes input from field devices such as FPI and LORA.

 

- Integrated Volt-Var Control- Integrated Volt-Var recommends an optimized set of network switching to achieve greater efficiency in the distribution network. It calculates the predicted values of voltage, active and reactive power, and power factor for a given network. It thereupon suggests a set of network switching for bringing these values within desired limits. In this manner, it assists in meeting various important objectives like minimizing real power losses, maintaining the voltage profile of the network etc.

 

 

- Optimal Feeder Reconfiguration- The Optimal Feeder Reconfiguration application analyzes the distribution network and proposes switching actions that will result in better utilization of the distribution assets. Its two modes of operation look to reduce system losses and improve voltage profiles or to reduce overloads.

 

- Switching Advisor- Switching Advisor determines and proposes switching operations in order to safely isolate a piece of equipment or portion of the distribution network as part of a work order

Smart DSS

 

Safety:  This minimizes bundle of wiring in control panel thereby reducing the risk of fire.

 

Simplified Engineering:  1 relay can provide protection for incomer & all outgoing feeders. 

 

Enhanced Flexibility:  The centralized protection and control device has inbuilt feature of AVR & Power Quality measurement. This avoids additional RTCC panel & cost of PQM.

 

Improved Reliability: Redundant systems and robust cyber security measures for ensuring the stability and reliability of Central Protection & Control systems. 

 

Remote Monitoring and Automation: Facilitate remote monitoring and automation, enabling better operation and maintenance of the substation. 

 

Merging Units: These devices digitize analog signals from current & voltage instrument Transformers & transmit to the Central Protection & Control system. 

 

Switchgear temperature monitoring: Installation of Temperature & humidity sensors in switchgear panels for real time monitoring.

Geographical Information System

 

Constituents of GIS at Tata Power

 

  • EHV Network – Route details of 220KV/110KV Network from Transmission Grid

 

  • Grid Internal – Single line diagram of Electrical Connectivity.
 
  • HT Network – Route details of 33 KV/22 KV/11 KV cable & location of Substation and connectivity details
 
  • LT Network – Route details of LV cable & location of feeder pillars & connectivity details

 

Consumer Mapping – Details of consumers up to LV level and location of asset and their connectivity