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The article discusses the solution of problems related to the development of a simulation model of a DC traction substation designed to evaluate energy and other performance indicators, including electricity quality indicators. The development of a simulation model makes it possible to evaluate the effectiveness of technical measures that can be used at traction substations to solve problems of improving the quality of rectified voltage, reducing non-sinusoidal busbars for their own needs, regulating the voltage on substation tires, and a number of others. Currently, the urgent tasks in the field of non-traction power supply include reducing the non-sinusoidal voltage on the busbars of alarm, centralization and blocking consumers who are sensitive to high voltage harmonics. The simulation was performed for one of the most common circuit solutions, characterized by the fact that a twelve-pulse rectification circuit of a sequential type is used at the substation. The proposed model was developed in the SimInTech software environment and allows you to evaluate the performance of a substation for various circuit states using switches inserted into the circuit. The simulation results are given for a symmetric system of sinusoidal voltages. The simulation results are compared with the results obtained on the basis of an experimental assessment of electricity quality indicators for one of the operating DC traction substations. The above measurement results at a traction substation with twelve-pulse rectifiers of a sequential type were performed synchronously for two pairs of inputs of 0.4 and 10 kV of the traction substation. A comparison of the simulation results shows the adequacy of the developed model and the equipment characteristics used in it, which makes it possible to use it to solve a number of other tasks.

Despite significant progress in the development of accounting systems, there is almost universal growth accounting losses of electricity and reduce its quality. Along with the introduction of modern energy efficient electrical problem efficiency of electric energy in the stationary energy sector can be achieved through the implementation of active-adaptive technologies for controlling the operation of compensating devices, controlled means of voltage control, switching and power equipment and diagnosis based on digital technology, including automatically maintain a minimum transmission losses when the load. Management of objects offered no traction electricity consumers based on adaptive technology and hardware-software optimization mode parameters in real time.

In this paper, the possibility of controlled shunt reactor (CSR) to absorb excess charging capacity in long lightly loaded transmission lines of 110 kV electric networks Nordic branch of JSC "IDGC of Siberia" - "Omskenergo." The emergence of excess reactive power leads to an increase in the voltage at the nodes of the power system and the emergence of significant power loss. The application of CSR, The calculation of the required power, the place of installation, pre-feasibility study.

The article considers one of the ways of improving the energy efficiency of three-phase power supply system of industrial and railway enterprises. Presented and proved a theorem, which allows to determine the necessary conductivity and the reactive branch currents compensating device with asymmetric structure, for which the equivalent conductivity of these elements and the load will be symmetrical and active. In three-phase electric circuit of an alternating sinusoidal current reactive elements allow to redistribute active and reactive power between the phases. The use of a compensating device with asymmetric structure will reduce losses from the occurrence of reactive currents, reverse currents and zero sequence in low-voltage three-phase power system. As an example of the use of the theorem and the calculated expressions for determination of conductance of the branches of the asymmetric compensating devices a special test problem was considered. It shows the values of power losses, the coefficients of voltage unbalance with and without using the device. Considered possible options for the practical implementation of such technical devices.