The paper reviewed to development of application software for interaction with instrumentation and control equipment; collect, process and display information; determine the patterns of elements and regimes EES.

        Automation of pilot studies using information technology is an effective simulation of a natural trend in electric power systems (EES). This is due to the great potential of computers for rapid processing of measurements, data storage and processing, ensuring a broad restructuring of the system in the process of work and so on. One of the latest developments, allows you to create virtual instrumentation and systems, is a software package LabVIEW.

        The purpose of the work is to create software and hardware systems on the basis of virtual instruments for pilot studies regimes electrical systems. Designed complex calculation provides sub-frequency characteristics, parameters substitution schemes, standing time.

        Scientific novelty work is as follows:
        - Defining the parameters of synchronous generators according to GOST 10169-77,including parameters of substitution schemes;
        - Indicators of quality of electricity through a set of software developed in LabView.

        The practical value of the results of Master's work is to create software that provides automation research and pilot testing electrical systems.

        ГОСТ13109-97 "quality standards of electrical energy in the electricity systems of general purpose" establishes performance standards and quality of electricity networks in electric power systems and methodology for determining indicators [3]. Among the 17 indicators of quality are the main 8. The definition of quality indicators is technically difficult task, which is sold, usually with the help of specialized measuring devices and systems. Using data collection devices USB-6009 and programming environment LabVIEW measurement system was designed to identify the main indicators of the quality of electrical energy.

        The definition of each of the indicators is realized through a virtual device, serving as measurement, process and display the relevant parameter result. In the metering system implemented the following definition of quality indicators of electric power.

        To determine the consistency deviations of voltage measurement according to standard ГОСТ that defines linear voltages at operating frequency.

         Current value is calculated for voltage of direct sequence of the main frequency U_l(l)i, according to the formula

        (1)

        After averaging U_l(l)i could be calculated the value of existing deviations of voltage dU_y by percentage formula 2, which is compared with normative values.

dU_y=        (2)

        Block diagram of the device and front panel are given at Figure 1.

        Writing and measuring the amplitude of the signal device "Fluctuations of voltage" similar device "Voltage deviation". Amplitudes measured value of voltages and their values are written to the array (Figure 2). On the schedule (Figure 3) displays envelope operating voltage of main frequency. Running sub extremes to find an envelope of operating voltage main frequency.

        

        The magnitude of change is calculated as a percentage dUt voltage and frequency of repetition changes the voltage FdUt, cl, min-1, with periodic oscillations of the voltage. The time t is given before the start of the programme and is 10 minutes in accordance with ГОСТ 13109-97.

        On the schedule (Figure 3) displayed curves raised by ГОСТ and values of dUt / FdUt.

         Perhaps voltage fluctuations are within the rules, if the measured values dUt / FdUt located below curves defined by ГОСТ.

        

        

        A calculation of the current output voltage and frequency of direct substantive consistency Ul(l)i (Fig.6). current output voltage and reverse the sequence of the main frequency U2(1)i. . A computation of the factor of unbalanced reverse sequence К2Ui percentage as a result of i-observation. Measurements are recorded in the array. Should be 9 measurements. Calculated value unbalance voltage on the reverse sequence K2 U percentage.

        A comparison of results measurement with the normative values and, depending on the results of comparison, is happening or not happening actuation indicator "Above normal allowable" or "above the allowable limit" (Fig.6).

        

        Measured amplitude voltage and defined beginning and end of failure, if it occurred in the network (Fig.8). Defined maximum voltage failure, and calculated the maximum depth of failure voltage dU and as a percentage. The measurements are repeated again and the results of calculations are written to the array.

        Subprogramm verify that the failure of normative values. If the duration exceeds the maximum 30 with failure, the indication is switch "Bad failure". This means that the maximum duration of failure does not meet the standards.

        Measured amplitude voltage and defined beginning and end of momentum, if any occurred in the network, as well as the value of the amplitude and pulse width (Fig.9).

        Produced necessary computations and their results are written to the array. Subprogramm that the verify pulse amplitude normative values. In this case, works or fails indicator "Impulse overvoltage".

        

        

        The measuring system consists of a personal computer, unit alignment and measuring devices on the basis of data collection USB-6009 and the recruitment of current mites (TA1-TA4) (Fig.12).

        Galvanic interchange with the network carried out by phases with the help of transformers TV1-TV3. Analyte system voltage flows through the slot HR9. Connecting to a computer is carried out through the USB port.

        

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