Elements of analyzing and testing an electric power system

Abstract

The problem with managing isolated power systems is that shunt links cannot be used to control system parameters and transient stability. The consequences of perturbations in the power system are borne by automation and relay protection systems. But they cannot prevent deviations of system parameters such as voltage or power factor from the limits specified in GOST. The purpose of this dissertation is to identify possible solutions to restore the system parameters to their limits, thereby normalising the operation of the rest of the grid and increasing the life of the electrical equipment. The solution will be found by modelling the existing isolated power system of the Sakhalin region and analysing it using the ETAP software tools. In turn, the tools provided by the software package are software kernels with their own algorithms. For example, the transient stability kernel is able to determine the behaviour of the power system in the event of regulatory perturbations. The optimal capacitor bank placement kernel determines the locations, number and nominal parameters of capacitor banks required to maintain the parameters specified in the kernel settings. Based on the results of the work, the task of managing system parameters within the limits established by GOST, as well as the preservation of transient stability of the power system was performed. An economic assessment of the given solution to the problem has also been given. Economic benefit can be achieved through the sale of compensated losses, the possible increase in transmitted energy could be realised through future consumers, thereby benefiting from reduced losses. However, the project still remains unprofitable, not taking into account the increase in the service life of the consumer's appliances. It is the responsibility of every owner of a generation, transmission or distribution network, whether the owner is a private investor or a state-owned company, to keep the grid within its specified limits. This means that this solution can be implemented in the same power system in the Sakhalin region, as the mathematical model has been generated using the existing parameters of the same power system.

The problem with managing isolated power systems is that shunt links cannot be used to control system parameters and transient stability. The consequences of perturbations in the power system are borne by automation and relay protection systems. But they cannot prevent deviations of system parameters such as voltage or power factor from the limits specified in GOST. The purpose of this dissertation is to identify possible solutions to restore the system parameters to their limits, thereby normalising the operation of the rest of the grid and increasing the life of the electrical equipment. The solution will be found by modelling the existing isolated power system of the Sakhalin region and analysing it using the ETAP software tools. In turn, the tools provided by the software package are software kernels with their own algorithms. For example, the transient stability kernel is able to determine the behaviour of the power system in the event of regulatory perturbations. The optimal capacitor bank placement kernel determines the locations, number and nominal parameters of capacitor banks required to maintain the parameters specified in the kernel settings. Based on the results of the work, the task of managing system parameters within the limits established by GOST, as well as the preservation of transient stability of the power system was performed. An economic assessment of the given solution to the problem has also been given. Economic benefit can be achieved through the sale of compensated losses, the possible increase in transmitted energy could be realised through future consumers, thereby benefiting from reduced losses. However, the project still remains unprofitable, not taking into account the increase in the service life of the consumer's appliances. It is the responsibility of every owner of a generation, transmission or distribution network, whether the owner is a private investor or a state-owned company, to keep the grid within its specified limits. This means that this solution can be implemented in the same power system in the Sakhalin region, as the mathematical model has been generated using the existing parameters of the same power system.