RU2559408C1 - Method for determining electric energy consumption by electric stock within limits of arbitrary metering area - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: in the method electric energy consumption and recuperation increment is measured by a data measurement system onboard an electric stock. Geographic coordinates are measured for the location of the electric stock with the preset interval and global time reference. At the server of upper level data collection and processing a consumption value and recuperation value are defined by the arithmetic addition of the consumption increments w_i' and increments of recuperation wi" of electric energy j^th by the electric stock fixed in the calculation period T within limits of the k^th metering zone. Consumption and recuperation of electric energy within the limits of the k^th metering zone for all units of the electric stock for the period T is defined by the following formulas:

EFFECT: potential definition of absolute and specific consumption values and electric energy recuperation by the electric stock.

2 cl, 3 dwg

Description

The invention relates to electric rolling stock of railway transport, and in particular to electric energy metering systems, in particular to a method for determining electric power consumption by electric rolling stock within an arbitrary section of a railway.

The aim of the invention is the realization of the possibility of determining the absolute and specific values of the flow rate and recovery of electrical energy by electric rolling stock within the boundaries of an arbitrary metering zone for an arbitrary period of time.

Electric rolling stock is not a stationary consumer of electric energy and, in the course of its movement, can cross the boundaries of various accounting zones (railways, tariff zones, inter-substation zones, etc.). Correct separation of electricity consumed by electric rolling stock between different metering zones has always been an urgent problem for Russian Railways, in particular when establishing the procedure for settlements for electric energy for train traction between neighboring railways (including foreign ones) under conditions of interchange of locomotive teams. The allocation of private electric rolling stock on the public railways of Russian Railways required the development of a mechanism for determining the energy consumption for train traction within the different tariff zones, in order to be able to calculate the electricity charges presented to private transportation companies. In addition, to assess the operational efficiency of the traction power supply system and electric rolling stock and develop measures to increase it, it is necessary to determine and control the consumption of electric energy consumed by electric rolling stock within the boundaries of inter-substation zones and other arbitrary metering zones.

Currently, a method for determining the consumption of electric energy by electric rolling stock according to the readings of metering devices as a whole for a trip and distributing it between different metering zones on the basis of calculation is known and applied on railways [1]. The essence of the method is the distribution of electricity on a trip between neighboring zones in proportion to the volume of ton-kilometer work performed within each of these zones, i.e. actually proportional to the distances from the starting and ending points of the route to the border of the railways (tariff zones).

The disadvantage of this method is the calculation method of the distribution of energy consumption between different zones, which does not take into account the influence of the track profile of the section, stops along the route and other factors associated with the modes of the train.

There is a similar method in which the separation of electric energy between neighboring zones is proportional to the experimentally determined coefficients of electric energy distribution in the areas of work of locomotive teams [2]. This method in comparison with the above has higher accuracy, but its disadvantage is poor versatility, because each time when changing the volume of transportation work or the boundaries of the metering zones, experimental determination of new distribution coefficients is required.

There is also a method of determining the flow rate within the boundaries of various metering zones using a system of commercial metering of electricity consumed by traction rolling stock [3]. The method is based on the use of reference signal sources located along the railroad track, during the passage of which the electricity metering system on an electric rolling stock records its consumption.

The disadvantage of this method is the need to place sources of the reference signal along the railway track. Depending on the task, their number can vary from several tens (when determining the energy consumption within the boundaries of railways or tariff zones) to several thousand (when determining the consumption within the boundaries of inter-substation zones, as well as on traction paths of repair depots). Also, the method does not allow the determination of energy consumption within the boundaries of an arbitrary section.

There is a method of determining the energy consumption within the boundaries of the selected section of the alternating current by recording the electricity consumption by electric rolling stock using the motion parameter recorders (RPDA) with a frequency of 0.1 to 1 minute with reference to the coordinate of the path [4]. The ordinate is detected by the distance sensor. The consumption of electric energy in a particular zone is calculated by subtracting the energy consumption recorded at the entrance to the zone from the consumption recorded at the exit from the metering zone.

The disadvantages of the method include the difficulty of determining the moment of crossing the borders of a given arbitrary metering zone, since the RPDA system records the mileage of electric rolling stock from a certain point on the track, and therefore, to determine the moments of crossing the boundaries of the metering zone, information is needed on the coordinates of the reference point, as well as traversed route from the origin. In addition, the accuracy of determining the ordinate of the path depends on the accuracy of setting the diameter of the bandage of the wheelsets of the rolling stock.

The prototype of the invention is a method for calculating the consumption of electrical energy in metering zones using metering equipment equipped with global positioning systems [5]. The method is based on dividing railways into metering zones as the minimum territorial unit, and determining by specialized means of metering on electric rolling stock the consumption of electric energy within the boundaries of these zones. When electric rolling stock moves through metering zones in a technical metering tool, a database is formed on the consumption of electric energy in each zone separately and on the total consumption of electric energy by electric rolling stock.

The disadvantage of this method is that the calculation of energy consumption is carried out directly by the technical means on electric rolling stock within the boundaries of those metering zones whose geographical coordinates are predetermined in the technical means database. Thus, when changing the boundaries of metering zones or introducing additional metering zones, it becomes necessary to reprogram the electricity metering devices throughout the electric rolling stock. In addition, the consumption of electric energy in each zone is determined taking into account the energy of recovery, and not separately, which does not allow a detailed analysis of the effectiveness of the use of regenerative braking in a particular metering zone.

The technical result of the invention is:

- reducing the complexity of determining the flow rate and recovery of electricity by electric rolling stock within the boundaries of metering zones by reducing operations when setting the boundaries of metering zones of electric energy;

- expanding the capabilities of flow analysis and recovery through their separate determination within the boundaries of the metering zone;

- increasing the flexibility of the method due to the possibility of determining the energy consumption for any period of time at any arbitrary boundaries without the need for reprogramming of electric energy metering devices on an electric rolling stock;

- the possibility of using technical means of electricity metering on electric rolling stock without the use of complex computational algorithms for its consumption within the boundaries of metering zones.

Differences from previously known methods for determining losses are:

setting boundaries of electric energy metering zones on a top-level data collection and processing server; separate determination of the consumption and recovery of electrical energy within the boundaries of the metering zone.

) и рекуперацииFigure 1 presents a diagram of the passage of the electric rolling stock 1 through the ke of the electric metering zone 2. In the direction of travel, the information-measuring complex 3 [6] on the electric rolling stock at each time t _i with an interval Δt measures the flow increment ( $$w_i^{\text{'}\text{'}}$$

) and recovery

) электроэнергии электроподвижным составом, а также географических координат его местоположения (широты - φ_i и долготы - λ_i). Все измеренные значения сохраняются в энергонезависимой памяти измерительного-информационного комплекса с метками времени.( $$w_i^{"}$$

) Electric power of electric rolling stock, as well as the geographic coordinates of its location (latitude - φ _i and longitude - λ _i). All measured values are stored in non-volatile memory of the measuring-information complex with time stamps.

Figure 2 shows a diagram of the transmission of data from the board of electric rolling stock to the server for collecting and processing data of the upper level. The information-measuring complex 2 on electric rolling stock 1 includes a GPS / GLONASS module with antenna 3, which receives information about the geographical position from satellite 11, as well as a wireless communication module with radio antenna 4. Data is transmitted from the electric rolling stock to the lower level data collection server 7 via radio channel 6 in the coverage area of the wireless access point 5, which are located in locomotive (car-wagon) depots or turnover points of locomotive teams 8. Further information on fiber optic Through communication 9 is transmitted to the server for collecting and processing data of the upper level 10.

и $$W_{KT}^{"}$$

- расход и рекуперация электрической энергии в k-й зоне учета за расчетный период Т; $$W_{KTj}^{\text{'}}$$

и $$W_{KTj}^{"}$$

- расход и рекуперация электрической энергии j-м электроподвижным составом в k-й зоне учета за расчетный период Т.On the top-level server, information is collected from all units of electric rolling stock and processed according to the algorithm shown in figure 3, where k is the serial number of the electricity metering zone; Φ _k and Λ _k are the set of geographic coordinates belonging to the k-th accounting zone; T is the estimated time period limited by time t ₁ and t ₂ ; $$W_{KT}^{\text{'}\text{'}}$$

and $$W_{KT}^{"}$$

- consumption and recovery of electric energy in the k-th metering zone for the billing period T; $$W_{KTj}^{\text{'}\text{'}}$$

and $$W_{KTj}^{"}$$

- consumption and recovery of electrical energy by the j-th electric rolling stock in the k-th metering zone for the billing period T.

The consumption and recovery of electric energy by all electric rolling stock within the boundaries of the k-th metering zone for the billing period T are determined by the expressions:

As the boundaries of the electric energy metering zone, the boundaries of the railway, tariff zone, power supply distance, inter-substation zone, locomotive crew work area, traction paths of the repair locomotive or motor-car depot, as well as any arbitrary railway section can be taken.

The invention is aimed at reducing the complexity of calculation and expanding the possibilities of analyzing the consumption and recovery of electricity by electric rolling stock within the boundaries of the railway, tariff zone, substation zone, work area of locomotive crews, on traction paths of repair locomotive and motor-car depots and other arbitrary zones for settlements between electricity for traction of trains between neighboring railways in the conditions of interchange of locomotive teams, for the possibility of presenting a fee and electricity to private carriers operating their traction rolling stock on the public railways of Russian Railways to evaluate the efficiency of the traction power supply system and electric rolling stock within the boundaries of arbitrary sections and develop measures to increase it, to determine the power consumption on the traction paths of repair locomotive depots when making mutual settlements for electric energy with repair organizations.

Bibliographic list

1. Cheremisin V.T., Zverev A.G. The methodology for calculating the specific consumption and "unbalance" of electric energy for traction of trains within the boundaries of railway sections // Transactions of the All-Russian Scientific-Practical. conf. “Actual problems of the Trans-Siberian Railway at the turn of the century” / Far Eastern State. un-t of communication lines. Khabarovsk, 2000.V.2. S.107-114.

2. Ushakov S.Yu. Improving the reliability of determining the consumption of electric energy for train traction while taking into account the influence of interstitials of locomotive teams / S.Yu. Ushakov // Bulletin of the Samara Scientific Center of the Russian Academy of Sciences. Specialist. release. Prospects and directions of development of the transport system / Samara Scientific Center of the Russian Academy of Sciences. Samara, 2007.S.234-237.

3. Pat. for the invention 2427916 of the Russian Federation. IPC G06Q 90/00, B60L 3/00. The system of commercial metering of electricity consumed by traction rolling stock / A.V. Kuznetsov, V.I. Umansky, S.K. Basyrov, L.N. Rachek, D.G. Kuznetsov, I.N. Rosenberg, E.N. Rosenberg (RF) - No. 2010115349/08; Announced 04/19/2010; Publ. 08/27/2011. Bull. Number 24.

4. Pat. for the invention of 2267410 RF. IPC B60L 3/00, G01R 21/06. A method for determining technological losses of electricity in a traction network of alternating current / M.D. Rabinovich, N.A. Petrov, A.V. Kuznetsov, V.V. Kuznetsov, B.D. Nikiforov, E.L. Emelianenkova (RF) - No. 2004118637/11; Announced on 06/22/2004; Publ. 01/10/2006. Bull. Number 01.

5. Khryakov A.A. Calculation of electric energy consumption in the areas of accounting for electric traction of direct current using new technical means / A.A. Khryakov // Proceedings of the Trans-Siberian Railway / Omsk State. un-t of communication lines. Omsk, 2011. No. 2 (6). S.42-45.

6. Pat. for utility model 97829 RF, IPC G01R 11/54. Universal electronic meter for metering electric energy on electric rolling stock of direct and alternating current / V.T. Cheremisin, S.S. Gritsutenko, M.M. Nikiforov, S.N. Chizhma, A.A. Boars. (RF) - No. 2010118148/28; Announced on 05/05/2010; Publ. 09/20/2010. Bull. No. 26.

Claims (2)

1. The method for determining the energy consumption of electric rolling stock within the boundaries of an arbitrary metering zone, which consists in measuring with a special information-measuring system on board the electric rolling stock the increment of consumption and recovery of electric energy and the geographical coordinates of its location with a specified interval and referencing to global time, based on which top-level data collection and processing server by arithmetic addition of flow increments

(recovery

) of electric energy by the j-th electric rolling stock recorded in the calculation period T within the boundaries of the k-th metering zone, the value of the consumption (recovery) of electric energy by the j-th electric rolling stock within the boundaries of the calculated metering zone is determined, the flow and recovery of electric energy within the limits of k- of the accounting zone by all j-units of electric rolling stock for the period T are determined by the formulas

2. The method according to claim 1, characterized in that the boundaries of the electric energy metering zones are set on the top-level data collection and processing server, and not on the electric rolling stock, as well as by the separate determination of electric energy consumption and recovery within the metering zone.

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