Power System Planning and Operation (Slides)
Aman Gautam, Praveen Kumar Gurram, Lyhour You
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Panel
13 Sep 2022
This panel session contains the following presentations:
1. Monitoring and Utilization of SVC/STATCOM Using SCADA/WAMS in Indian Power System
Indian power system is one of the largest synchronous interconnections in the world. The installed capacity of more than 390 GW caters to the daily energy requirement of more than 1.38 billion people of India. The widespread transmission network of more than 448 thousand circuit kilometers experience conditions of high and low voltages. In such a large power system, variation is generally observed across various nodes of the system. The variation in voltage is both diurnal as well as seasonal in nature. During real time system operations, sometimes it becomes very difficult to maintain the system voltages as per the grid standards. The Indian power system has also experienced two major grid disturbances on 30-07-2012 and 31-07-2012. One of the cause of disturbances was voltage instability. After this disturbance, system planners suggested to install Flexible AC Transmission Systems (FACTS) at strategic locations to avoid recurrence of such disturbances in future. FACTS help in better controllability of the system and also improves the power transfer capability of existing transmission system which enhances reliability and security of the system. Indian power system has various FACTS devices in operation across various locations in the grid. The FACTS devices in India comprise of SVC, STATCOM, FSC and TCSC. To ensure better monitoring of the FACTS devices, phasor measurement units (PMU) are being installed at the terminals of FACTS devices. This paper has discussed the performance of SVC and STATCOM during the steady state and dynamic state. After the performance assessment, the system operator can provide the most suitable settings of these devices. The control settings are adopted based on historical data and existing system conditions. The regular feedback helps in optimum utilization as well as better performance of FACTS devices. The assessment of SVC and STATCOM is done using the data made available at control centers by SCADA and Wide Area Measurement Systems (WAMS).
2. Paradigm Shift in Power System Operation with High Penetration of Renewable
Indian grid is one of the largest synchronous grids in the world and India is one of the leading countries in terms of Renewable Energy (RE) generation capacity. In line with India's commitment towards a greener planet, RE capacity installations have seen unprecedented growth in the last decade. RE brings in new challenges to power system operation like steep ramping requirements, eclipses, reactive power issues, inertia, other weather Events etc. Several measures have been brought into the Indian power system to facilitate smooth integration of RE, thus contributing to the global cause. This paper discusses the new practices adopted by the system operator and initiates brought in by the central electricity regulator for effective and efficient RE integration. Viz., Load shifting, changes in thermal generation minimum operational level, mandatory ramping requirements from thermal generators, Reserve Shut Down of thermal generators, PLF of conventional generation, reactive power management and switching operations in RE associated transmission system, etc. have been discussed exhaustively.
3. Optimal Topology of LVAC in a Rural Village Using Water Cycle Algorithm
The goal of this work is to create and compare the AC low voltage (LVAC) topology using various algorithms. In the first phase, the shortest path (SP) algorithm is used to find the minimizing conductor usage. Repeated ABC phase sequence (RPS ABC) is the based case while Genetic Algorithm (GA), and Water Cycle Algorithm (WCA) are used in the second stage to figure out load balancing in a three-phase LVAC topology. The distribution network topologies are automatically displayed for different phase connections of the distribution network. To evaluate the proposed strategies, the 129-buses distribution test network in a Cambodian rural community was chosen as a case study. Then, after a comparison of all these methodologies, it is possible to infer that the WCA leads to the best solutions.
1. Monitoring and Utilization of SVC/STATCOM Using SCADA/WAMS in Indian Power System
Indian power system is one of the largest synchronous interconnections in the world. The installed capacity of more than 390 GW caters to the daily energy requirement of more than 1.38 billion people of India. The widespread transmission network of more than 448 thousand circuit kilometers experience conditions of high and low voltages. In such a large power system, variation is generally observed across various nodes of the system. The variation in voltage is both diurnal as well as seasonal in nature. During real time system operations, sometimes it becomes very difficult to maintain the system voltages as per the grid standards. The Indian power system has also experienced two major grid disturbances on 30-07-2012 and 31-07-2012. One of the cause of disturbances was voltage instability. After this disturbance, system planners suggested to install Flexible AC Transmission Systems (FACTS) at strategic locations to avoid recurrence of such disturbances in future. FACTS help in better controllability of the system and also improves the power transfer capability of existing transmission system which enhances reliability and security of the system. Indian power system has various FACTS devices in operation across various locations in the grid. The FACTS devices in India comprise of SVC, STATCOM, FSC and TCSC. To ensure better monitoring of the FACTS devices, phasor measurement units (PMU) are being installed at the terminals of FACTS devices. This paper has discussed the performance of SVC and STATCOM during the steady state and dynamic state. After the performance assessment, the system operator can provide the most suitable settings of these devices. The control settings are adopted based on historical data and existing system conditions. The regular feedback helps in optimum utilization as well as better performance of FACTS devices. The assessment of SVC and STATCOM is done using the data made available at control centers by SCADA and Wide Area Measurement Systems (WAMS).
2. Paradigm Shift in Power System Operation with High Penetration of Renewable
Indian grid is one of the largest synchronous grids in the world and India is one of the leading countries in terms of Renewable Energy (RE) generation capacity. In line with India's commitment towards a greener planet, RE capacity installations have seen unprecedented growth in the last decade. RE brings in new challenges to power system operation like steep ramping requirements, eclipses, reactive power issues, inertia, other weather Events etc. Several measures have been brought into the Indian power system to facilitate smooth integration of RE, thus contributing to the global cause. This paper discusses the new practices adopted by the system operator and initiates brought in by the central electricity regulator for effective and efficient RE integration. Viz., Load shifting, changes in thermal generation minimum operational level, mandatory ramping requirements from thermal generators, Reserve Shut Down of thermal generators, PLF of conventional generation, reactive power management and switching operations in RE associated transmission system, etc. have been discussed exhaustively.
3. Optimal Topology of LVAC in a Rural Village Using Water Cycle Algorithm
The goal of this work is to create and compare the AC low voltage (LVAC) topology using various algorithms. In the first phase, the shortest path (SP) algorithm is used to find the minimizing conductor usage. Repeated ABC phase sequence (RPS ABC) is the based case while Genetic Algorithm (GA), and Water Cycle Algorithm (WCA) are used in the second stage to figure out load balancing in a three-phase LVAC topology. The distribution network topologies are automatically displayed for different phase connections of the distribution network. To evaluate the proposed strategies, the 129-buses distribution test network in a Cambodian rural community was chosen as a case study. Then, after a comparison of all these methodologies, it is possible to infer that the WCA leads to the best solutions.
Chairs:
Jasrul Jamani Jamian
