;where nGW is number of overhead ground wires, which are suitable to analyzed support, ZWGW is value of wave resistance of overhead ground wire – ground surface, characterized by that at measurement interval ΔtMES, limited on one side by the current pulse start, and on the other side only by the arrival time of reflections from neighboring supports by overhead ground wires, performing exponential smoothing of a number of values zj, considering that impedance EA includes capacitive component, smoothed dependence zsj is described by expression:; ;where REA, CEA – resistance and capacitance of equivalent R-L-C equivalent circuit of EA, determining equivalent active EA resistance of OL support REA as value of asymptote, to which dependence zsj tends at the end of interval of measurement the ΔtMES, by formula:; ;where N is total number of discrete values of row zsj on measurement interval ΔtMES, Nav is number of discrete values zsj falling within limits of averaging interval Δtav, the end of which coincides with the end of the measurement interval ΔtMES, and duration is 1/8 of duration ΔtMES, then stationary resistance EA RLF is determined.;EFFECT: possibility of increasing accuracy of determining stationary resistance EA of OL supports without disconnection of overhead ground wire, including supports, EA of which have large area of earthing electrode and (or) are located in soil with high specific resistance, and information value of obtained data.;3 cl, 2 tbl, 7 dwg"/>
METHOD OF DETERMINING VALUE OF STATIONARY RESISTANCE OF EARTHING ARRANGEMENT OF SUPPORTS OF OVERHEAD POWER TRANSMISSION LINES WITHOUT DISCONNECTION OF OVERHEAD GROUND WIRE AND DEVICE FOR ITS IMPLEMENTATION
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METHOD OF DETERMINING VALUE OF STATIONARY RESISTANCE OF EARTHING ARRANGEMENT OF SUPPORTS OF OVERHEAD POWER TRANSMISSION LINES WITHOUT DISCONNECTION OF OVERHEAD GROUND WIRE AND DEVICE FOR ITS IMPLEMENTATION
METHOD OF DETERMINING VALUE OF STATIONARY RESISTANCE OF EARTHING ARRANGEMENT OF SUPPORTS OF OVERHEAD POWER TRANSMISSION LINES WITHOUT DISCONNECTION OF OVERHEAD GROUND WIRE AND DEVICE FOR ITS IMPLEMENTATION
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机译：在不断开架空接地线的情况下确定架空输电线路支座接地电阻固定值的方法及其实现方法
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摘要
FIELD: measurement.;SUBSTANCE: use to determine value of stationary resistance of earthing arrangement (EA) of overhead power transmission towers (OL) without disconnection of overhead ground wire and device for its implementation. Essence of the invention consists in that the method of determining the value of the stationary resistance of the earthing arrangement (EA) of overhead power transmission lines (OL) without disconnection of the overhead ground wire includes the impact on the EA of the support with a rectangular current pulse, recording values of current strength through EA ij and voltage drop on EA uj with respect to the remote potential electrode at discrete instants tj, calculating the transient impedance EA zj by the given formula and determining the equivalent active resistor replacement circuit EA REA, based on the obtained data array zj on the measurement interval ΔtMES, calculation of stationary EA resistance of OL support RLF by formula, taking into account wave resistance of overhead ground wires, suitable for support:; ;where nGW is number of overhead ground wires, which are suitable to analyzed support, ZWGW is value of wave resistance of overhead ground wire – ground surface, characterized by that at measurement interval ΔtMES, limited on one side by the current pulse start, and on the other side only by the arrival time of reflections from neighboring supports by overhead ground wires, performing exponential smoothing of a number of values zj, considering that impedance EA includes capacitive component, smoothed dependence zsj is described by expression:; ;where REA, CEA – resistance and capacitance of equivalent R-L-C equivalent circuit of EA, determining equivalent active EA resistance of OL support REA as value of asymptote, to which dependence zsj tends at the end of interval of measurement the ΔtMES, by formula:; ;where N is total number of discrete values of row zsj on measurement interval ΔtMES, Nav is number of discrete values zsj falling within limits of averaging interval Δtav, the end of which coincides with the end of the measurement interval ΔtMES, and duration is 1/8 of duration ΔtMES, then stationary resistance EA RLF is determined.;EFFECT: possibility of increasing accuracy of determining stationary resistance EA of OL supports without disconnection of overhead ground wire, including supports, EA of which have large area of earthing electrode and (or) are located in soil with high specific resistance, and information value of obtained data.;3 cl, 2 tbl, 7 dwg
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机译：领域：测量;实体：用于确定高架输电塔（OL）的接地装置（EA）的固定电阻值，而无需断开高架接地线及其实现的装置。本发明的实质在于，在不断开高架接地线的情况下确定高架输电线路（OL）的接地装置（EA）的固定电阻值的方法包括用矩形电流脉冲，记录在离散时刻t j <时通过EA i j 的电流强度值和相对于远程电位电极的EA u j 上的电压降/ Sub>，根据给定的公式计算瞬态阻抗EA z j ，并根据获得的数据数组z EA > j 在测量间隔Δt MES 上，考虑到架空地线的波阻，通过公式计算OL支撑R LF 的静态EA电阻，适合支持： ;其中n GW 是架空地线的数量，适合于分析支撑，Z WGW 是架空地线–地面的波阻值，其特征在于在测量间隔Δt MES 处，一侧受电流脉冲开始的限制，而另一侧仅受架空接地线从相邻支架反射的到达时间的限制，对多个假设阻抗EA包括电容成分，则值z j 为zs j 。 ;其中R EA ，C EA – EA的等效RLC等效电路的电阻和电容，确定OL支持的R EA 的等效有源EA电阻作为渐近线的值，在测量间隔Δt MES 的测量间隔结束时，与之相关的zs j 趋于： ;其中N是测量间隔Δt MES 上第zs j 行的离散值总数，N av 是离散值zs j 落入平均间隔Δt av 的范围内，平均间隔的终点与测量间隔Δt MES 的终点重合，持续时间为1/8持续时间Δt MES，，然后确定固定电阻EA R LF 。效果：在不断开高架接地线的情况下，提高OL支撑的固定电阻EA的确定精度的可能性;包括具有大面积接地电极的EA和（或）位于高电阻率的土壤中的支撑物，以及获得的数据的信息值。; 3 cl，2 tbl，7 dwg
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