A New Approach to Assess the Value of Reactive Power Production
نویسندگان
چکیده
In a deregulated electricity market, Ancillary Services are essential for the adequate operation of the bulk power system. In order to procure reactive power support, it is necessary to quantify the value of the VAr’s available sources within the system. This paper focuses on reactive power supply and voltage control on transmission networks. An optimization approach is proposed to determine the minimum total cost of reactive power support. The variation of the minimum amount of reactive power (Qth) required by a given generator to deliver its own active power is taken into account. The optimization program is formulated as linear programming problem and is solved using MATLAB and JPélec©. The interaction between active and reactive power for accurate calculation of generators’ reactive power capacity is also evaluated. The proposed method is tested with a 13-bus test system and the 24-bus CIGRE network.
منابع مشابه
A New Approach for Accurate Pricing of Reactive Power and Its Application to Cost Allocation in Deregulated Electricity Markets
Reactive power management plays an essential role in the secure operation of the power system as an ancillary service. Although in electricity markets, the particular attention is paid to active power, the reactive power also plays an important on total generation costs of electricity. On the other hand, as it is mainly confined to local consumption, to avoid market power and maintain the se...
متن کاملA New Approach for Reactive Power Control of Single Phase Transformerless Inverter to Modify Power Quality in Stand Alone Micro-Grids with Current Leakage Elimination
Nowadays there has been an increasing interest in transformerless inverter for grid-connected photovoltaic (PV) system due to low cost, high efficiency and light weight. One of the reasons describe the grid behavior is capability of reactive power control by inverter. According to the standard VDE-AR-N 4105, grid-tied PV inverter of power rating below 3.68KVA, should attain power factor (PF) fr...
متن کاملEnhancement of Power System Voltage Stability Using New Centralized Adaptive Load Shedding Method
This paper presents a new centralized adaptive method under frequency load shedding. Sometimes, after initial frequency drop following severe disturbances, although the system frequency returns to its permissible value, however, the system might become unstable due to voltage problems. In this regard, the paper proposes a new centralized adaptive load shedding method to enhance the voltage stab...
متن کاملA New Algorithm for Optimum Voltage and Reactive Power Control for Minimizing Transmission Lines Losses
Reactive power dispatch for voltage profile modification has been of interest Abstract to powerr utilities. Usually local bus voltages can be altered by changing generator voltages, reactive shunts, ULTC transformers and SVCs. Determination of optimum values for control parameters, however, is not simple for modern power system networks. Heuristic and rather intelligent algorithms have to be so...
متن کاملA New Strategy for Simultaneous Compensation of Instantaneous Reactive Power and Harmonics of Non-Linear Loads (RESEARCH NOTE)
This paper presents a new control method for simultaneous compensation of instantaneous reactive power and current harmonics by parallel active filters (PAFs). Reference compensating currents of PAF are calculated using the subtraction of instantaneous power from its average value. In this way, it is possible omitting high/low pass filter(s) from the control circuit of PAF, which usually result...
متن کاملA Nonlinear Voltage Stability Index based on Vector Analysis Method and Measurements of Active and Reactive Powers of Power System
This paper proposes a new voltage stability assessment method based on vector analysis method. This index extraction process relies on measurements of active and reactive powers from connected buses to the generator buses. Therefore, a limit for beginning of voltage collapse is determined based on the maximum power transfer theory. On the other hand, when the system requires load shedding, a ne...
متن کامل