Monitoring & Control
Monitoring & Control
Section 1. Promotion and Benefits of Advanced Distribution Management System(ADMS)
According to the description of the SMART GRID INDEX document 2.1 Monitoring & Control, Monitoring & Control is divided into three stages: SCADA, DMS, and ADMS. The ADMS functions should include on-site real-time data collection and control (SCADA), Automatic fault location, isolation and supply restoration(FLISR) and outage management system (OMS) application.
Taiwan Power Company has developed various power distribution application management systems since 1992. As of the end of December 2020, it has established outage management system (OMS) and Feeders Dispatch Control System (FDCS) with functions such as SCADA, FDIR (Automatic Fault Detection, Isolation and Restoration , or called FLISR),and feeder single line diagram and GIS (geographic map information) in 23 Distribution Branches, covering 7,815 automated feeders (the total feeder number is 10,135 , 77.1%), 26,364 automatic switches included, and 10,193,073 customers (71.5%); the whole 23 FDCS systems in operation are equipped with ADMS functions, the automatic fault location, isolation and supply restoration (FLISR), described in SMART GRID INDEX file 2.1 Monitoring & Control.
The process of building an advanced power distribution management system :
In 2007, the FDCS system (Siemens) of the winning Kaohsiung Distribution Branch will be selected to promote power distribution areas throughout Taiwan. The FDCS system acceptance project was carried out in Taoyuan County.
Table 1-1. TPC FDCS system establishment process
Current implementation of FDCS system-wide environmen
Figure 1-1. Automated system build distribution map
The FDCS system is applied to the power distribution system 11.4Kv and 22.8kV overhead and underground Redial network distribution feeders. The feeder dispatching control center’s servers monitor the operation of the distribution line through the communication system and the feeder information terminal equipment. When the line fault occurs, it can quickly and automatically isolate the line fault section, automatically restore the power supply of the line's sound section, and provide GIS map information for the dispatcher and the on-site repair personnel to the area affected by the accident.
Control center: It mainly provides SCADA+FDIR functions, and has geographic map data (GIS) processing capabilities, providing operators with complete operation screens and dispatching information; and when an accident occurs, it can assist operators to quickly restore upstream and downstream sound sections to restore power. The expansion capacity provided by the system allows feeders and substations in the whole district to be included in the scope of Distribution Feeder Automation.
Field equipment: It can monitor various substation information terminal equipment (FRTU), feeder information terminal equipment (FTU) and other equipment installed on Redial network means or Meshed network.
Feeder Schematic Display (SLD)
Feeder schematic display based on electrical network topology
Circuit Breaker status on feeder schematic display based on electrical network topology
Circuit Breaker operation display with integrated information
Integrates various types of information on operation display
According to the goal set by the “The Smart Grid Master Plan” of the Bureau of Energy, Ministry of Economic Affairs, 900 automatic switches monitored must be increased every year from 2020 to 2030. It is expected that the goal of full automation will be achieved by 2030. At present, the total number of automated feeders by the end of 2020 has reached 7,815, and the penetration rate is about 77.1%. 26,324 feeder automatic switches have been included in the FDCS system monitoring (Figure 1-4).
Figure 1-4. The actual performance of the number of automatic feeders and the number of switches
Figure 1-5. The number of remote operations for power outages and accidental power outages in Distribution Feeder Automation work
Figure 1-6. FDCS system reduces users' average power outage data
Section 2. Improve ADMS system (FDCS system) in response to the future development of smart grid
2.2.1 Integrate the Data from every distribution systems of TPC
2.2.2 Continuously drive ADMS system functionality
The plan for a new generation of ADMS system has been completed in 2020 to replace the existing FDCS (with ADMS function), and will integrate various power distribution subsystems, in addition to re-enhancing the original FDCS functions (including FLISR, etc.), and adopt CIM data model construction Communication framework, integration of multiple information, such as DDCS, FDCS, MDMD, TTU, FCI, OMS, GIS data, use including database maintenance, system architecture, information security, SCADA processing and historical data and FLISR (FDIR), GIS map Integration of resources and OMS.
Introduce the industry's power distribution smart grid function
Integrate ADMS and DERM application functions, incorporate distribution power flow calculation and state estimation, refine FLISR (utilize power flow calculation) function, optimize feeder reconfiguration (Optimal Feeder Reconfiguration), import voltage/var optimization (Volt/Var Optimisation), short circuit Analysis (Short Circuit Analysis), Active Network Management (Active Network Management), Network Operation Planning (Network Operation Planning) and other smart grid functions.
Section 3. Implementation of smart grid application functions
Figure 3-1 Function discussion in Kinmen District
Figure 3-2 System diagram control screen
TPC and the Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan jointly develop smart grid application functions, start cross-industry cooperation between domestic power companies and institutes, conduct research on feeder dispatch related technologies for high proportion of renewable energy, and has been developed conduct pilot in Yunlin Distribution Branch.
Complete the integration of distribution power flow calculation program in FDCS System
In 2020, complete the integration of the distribution power flow calculation program on FDCS System, and propose a feeder transfer proposal, integrate the feeder power flow and line loss programs, and use the feeder test and FDIR in Yunlin area(Figure 3-3) to adjust the feeder margin, Information such as the minimum and maximum voltage mark and location, line loss, etc., will be included in the forwarding plan for operators’ reference.
Section 4. Reference
Shean-Jong Liaw.A Case Study and Its Benefit Analysis on The Distribution Feeder Automation System,