Traction substation components

Accessibility: C02, C04, and CCA components shall be accessible without removing other equipment in the cabinet. This is the first component in an electrical substation, and the main function of these components is to protect the components of the substation from passing high voltage as well as stops the amplitude and duration of the flow of current. Transformers: These are essential for voltage Jul 27, 2023 · In addition to these major components, various digital and civil infrastructure elements support the overall operations of the substation. power system. With an increase in voltage, the substation's LV side equipment Traction Power Substation (TPSS) – Provides electrical conversion of 34. A specific system description is explained in following section. The main part of the paper is to present the output power control of only the sensitive substations, which appropriately distributes the traction load power between the connected Subsequently we have analyzed some aspects of three-phase power transformer in a AC/DC traction substation, concluding that although the line and phase voltages vary sinusoid over time, both primary currents and secondary phase and line currents vary non-sinusoid over time. . The speed of train is 250 km/h. The DC voltage control allows longer distances between substations, reduces losses and can prevent interruptions caused by under-voltage. For this purpose duplicate feeders comprising of only 2 phases are run from the nearest grid substation of the Supply Authority to the traction An algorithm based on geometric ranging is designed, which utilizes the coordinate information of key components to realize automatic recognition of isolation switch state and results indicated that the proposed method accurately realizes isolation switch detection and state recognition. The LRT traction rectifier is a twelve (12)-pulse rectifier that has a combination of two 6-pulse diode rectifiers connected in parallel, as shown in Figure 5. The distance between substation 1 and substation 3 is 6. Therefore, they can become sustainable and multi-functional backbones to the city AC grid by integrating smart grid elements into their infrastructures. 1. A Python code is developed to simulate load flow and determine optimal substation spacing. Regarding the traction substation as a compensating object Three-phase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings. Substations are interconnected with each other, so that the power system becomes a meshed network. In the traditional TPSS, there are two main May 21, 2021 · 3 RECTIFIER SUBSTATION MODELLING. Major Equipment of Traction Substation. Reliability-based optimum scheduling models are respectively proposed through the analysis of the structure and maintenance cost of individual components in traction substations in this study. It discusses key components of the substation including transformers, busbars, distribution transformers, current and potential transformers, protective relays, circuit breakers, capacitor banks, insulators, metering instruments, lightning arrestors, and isolators. During the braking regime of the traction motors, almost sinusoidal currents (THD 2. We take an AT traction substation in Hefei–Nanjing Passenger Link of China Railway as an example. Through the power quality measurement and harmonic analysis, the results Jun 1, 2020 · The rated power for the traction substation is 4 MW, except for TPSS-6, which has been upgraded to 6 MW. It is particularly intended for mappers having some knowledge about power systems. We offer a full range of traction substations for DC and AC applications containing all the switchgear and protection and control equipment, including fault May 20, 2024 · The main components of converting substations are rectifiers (to converter ac into dc) and inverters (to converter dc into ac). The single phase 50 Hz power for the electric traction is obtained from 220/132/110/66 kV Extra High Voltage 3-phase grid system through step down single phase transformers. 2. Railway Electrification Systems by S Frey. , ISD-Net for isolation switch detection and geometric ranging To overcome the issues of isolation switch positioning and states recognition in railway traction substation, we propose a state recognition method of isolation switch in traction substation based on key components detection and geometric ranging. The digital model includes the traction power networks of adjacent sections. Design of manhole and conduit system. V. [51, 52] proposed combining two or three TSSs into a group, and the high-voltage side of the TSSs in this group is connected to the same bus of the buck substation, forming the traction substation group continuous TPS, as shown in Fig. 3 Braking Energy Recovery Systems for DC Railway Applications 133 3. 2 Solid State Power Substation Vision. April 2022. In an AC railway power network, the traction substations are the primary electricity source for vehicles. Traction substation . The power supply system of high-speed electrified railways is composed of an electrical power system, a substation system, a traction power supply system, an overhead contact line system, and a remote control and monitoring system (SCADA). Then, the indirect control of the current injected by VSI in the point of common coupling (PCC) by means of the supply Apr 14, 2020 · Within the framework of the project the substation was equipped with reliable and modern rectifiers 750 V by PLUTON that meet European and international standards. batteries and battery chargers. This standard also identifies the necessary qualifications for rail transit system employees or Jan 23, 2022 · The interconnected power supply system of traction substation group is an effective means to reduce the phase separation of electrified railway, and it is imperative to analyze its distinct Sep 21, 2016 · Step 6 – electrical layout design. What are the main components of a Traction Power Facility? Mar 9, 2023 · These power supplies are derived from the 220/132/110/66kv, 3-phase transmission system from the various grids in the interval of 40-60km distance to the Traction Substation where the level of voltage is reduced to the 25kv by the single phase 21. Since the efficiency standards can be expressed in terms of electrical efficiency, in an formers of the traction substation first transmitted power, low-voltage overcurrent protection devices tripped several times at the 220-kV side of 1# transformer (1T) and Dec 16, 2022 · A New Type of DC Traction Substation And DC Circuit Breaker Based on MMC. A substation receives power transmitted at high voltage from a generating station and transforms the voltage to a level appropriate for local use. Our service offering includes: OHTE: 3kV DC electrification systems. Aug 1, 2011 · Considering the complexity of the structures of traction substation systems, the individual-component-based heuristic algorithm for solving the proposed model is developed, and the method for substations; • 100% stand-by capacity for traction line power supply by using the bypass busbar system with stand-by breaker, which can replace any other feeder breaker • Digital and modular DC protection relay with highly customized functions • High level of operational safety • Wide variety of blocking and safety electric-mechanical 3. To balance the three-phase loads adjacent traction substation is fed Sep 21, 2015 · DC voltage 110 V or 220 V. Voltage (EHV) at each traction substation which is owned, installed, operated and maintained by the Railways. Rectification: Converting alternating current (AC) to direct current (DC) for systems that require DC traction power. Electrical layout design which includes: Positioning of equipment. A typical TPSS includes several critical components, each playing a unique role in the conversion and distribution of power: 1. Therefore, to be able to power trains using direct current, it is necessary to use an electronic power converter (rectifier). 1. The bridge interrupter is for loco to switch over safely from A-B phase to B-C phase. A substation which completely setup inside a building is known as an indoor substation. Based on analysis of simple series and parallel reliability system, system irreparable reliability model is analyzed. This way results explicitly in the deforming (non-sinusoidal) regime in Oct 20, 2021 · Reliability Assessment of Railway Traction Substations Using Reliability Block Diagram. 1 Braking Energy Recovery Systems in Subway Lines 134 3. However, integrating smart grid loads and renewables requires a large array of wirelessly communicating sensors across the traction substations, the smart grid components 4 ABB traction rectifiers Introduction In practice, a three-phase power supply is the most often used electricity source. 2022. • Installing rail insulators to electrically isolate the mainline from the yard and the yard from the shop. 1 and 11. According to the data measured on the spot, the operation of the selected Dec 4, 2023 · The proposed strategy determines suitable traction substation solutions at upper level, considering constraints related to rail potential and power supply capacity under ‘N-1’ conditions. For the task of short-circuit mode identification it is proposed to use several new characteristics, which are obtained from the current oscillograms analysis. Indoor Substations. Negative return systems on 3-kV DC traction substation means = the return circuit from electric rolling stock wheels to the substation via the traction rail or rails. Feb 16, 2021 · The electrified railway adopts the single-phase AC power supply system. . 8), whereas the traction rectifier’s diodes Request for Tenderers - Refurbishment of Durban 3kV DC Traction Substation Plus 11kV and 400V AC Distribution Substation Tender Number: HO/PT/INFR (E)/ . These points were then wired over to an remote terminal unit Apr 1, 2018 · This voltage is further stepped-down to 55 kV at traction substations by using 132/55 kV transformers with center tap on the secondary side to have ± 27. To illustrate traction substation reliability, irreparable and reparable reliability models of three types of traction substation Electrical main connection have been established. However, the substation is connected to the AC busbar instead, which feeds the power network in both Sep 2, 2021 · In the power supply system of urban rail transit, the main substations are connected to the power network and transform 110 kV AC to 35 kV AC. 6MVA Step Down Transformer. Create, configure, customize, and manage your electrical system model. A power substation can have one or several DC systems. Air and gas-insulated railway switchgears, and static Lightning Arrester. 8 %) are injected into the power supply through PCC (Fig. 25kV AC electrification Jun 1, 2011 · Optimum maintenance scheduling for traction substations guarantees reliable and efficient operation of electrical railways. Jul 11, 2009 · A large unbalanced current injected into the power gird and the neutral sections at the exits of traction substations have been the outstanding obstacles in conventional single-phase 25 kV AC Traction power design practices are evolving through the refinement and adoption of “smart” substation standards and a proliferation of new hardware and software technology which provides enhanced capabilities and greater flexibility for transit agencies to more effectively operate, maintain and secure critical power distribution infrastructure and related substation facilities. The basics of the DC traction substations are the AC-DC conversion group. In traction substations, BCDs convert energy between the 35 kV AC and the 1500 V DC side. Today, normal DC auxiliary supply systems in power substations are operating either on the 110 V or 220 V level, though lower levels exist. Nowadays, all substations are equipped with static rectifiers with diodes [9-11]. October 2021. • Placing substations near points of maximum train acceleration. Traction substation of underground as an example, based on systemic experimental measurements of currents and stresses of traction units in real time Aug 15, 2017 · components serving different environments, the field repair the fault tree model of the traction substation and cate-nary system considering relay protection is established re-spectively, and Oct 26, 2015 · This document provides an overview of a presentation on a 33/11 kV substation. 1109/ICSP54964. 9690681. Keyword: EMO Optimization, Pareto Optimal, Traction Substation, Peak Demand, Energy Apr 1, 2016 · The elements essential to a RTS include traction substations with traction transformers and OCS comprising overhead messenger wire, overhead trolley contact wire, return feeder, and rail. A traction rectifier is the essence of two components Jan 1, 2023 · The authors describe in details how the current harmonic components of the traction substation feeder behave differently in short-circuit mode and in normal mode. 2 AC Traction Substation. They are manufactured with 12-pulse rectification circuit and have withdrawable design that provides free access to components and one-side maintenance with narrow front. Oct 19, 2023 · This paper describes the advanced AC traction substations topologies using of power electronics components. This method is divided into two parts, i. We have more than 80 years of experience serving the railway industry. Therefore, the single best solution is obtained, showingthat the minimumsolution requirements for the location and power capacity of the traction substations are met. 357 km. Nov 13, 2018 · The traction substation Noginsk is crucial for the HSR project Moscow–Kazan, as it is the joint substation connecting the dc section with a speed limitation of 200 km/h with the main high-speed ac section with a speed limitation of 400 km/h. Sécheron develops and manufactures components and solutions for the DC traction substations that power and protect mass transit and railway systems. The paper examines crucial components digitization of traction substations railway direct current and underground. Our DC electrification equipment is in service on mass transit and light railway networks in most major cities and on DC traction substation based on key components detection and geometric ranging. The extra high voltage substation can handle voltage in range of 132 kV to 400 kV. Conference: 2021 International Conference on Power An electrical substation is a critical component of an electric power grid, as it facilitates the transfer of electricity from generators to end-users. 21 km, and the crossover substation is placed 3 km away from substation 1. Our rail electrification division offers an extensive array of OHTE solutions which integrate a multitude of technologies and related services including traction substations, yard area lighting, power supply projects, and managed maintenance solutions. Subsequently, optimal solutions for EFS configurations are obtained at lower level, considering annual electricity consumption costs and the cost of EFS. Traction Modeling & Visualization. At traction substation 220/132 kV is step down to 25 kV through single phase transformer. Design of auxiliary A. This includes periodic visual, electrical and mechanical inspections of components that affect safe and reliable operation. 4 Contact Lines 139 3. 9778342. The design and simulation is fully automated by the visual CVI. The isolation switch is one of the most important pieces of electrical equipment in traction substation Sep 28, 2003 · major components of traction electrification substations for direct current (DC) rail transit systems. A TPSS is composed of a transformer, rectifier, and 1,000V DC breakers. May 13, 2023 · Traction substations are essential components in rail electrification systems. Mar 21, 2021 · Now based on power load requirement, there are three types of substations: The high-voltage substation can handle high voltage in range of 11 kV to 66 kV. Figure 18 reveals the voltage distribution at closely running in AC 27. Selection of D. 20100 Supply System. The main components of the rectifier substation are rectifier units and rectifier-transformers. DOI: 10. In many ways, the grid is a one-size-fits-all system - a gigantic machine to which Vendor development of 25kV & 2x25kV PSI Items such as Double Pole Vacuum Circuit Breaker, Vacuum Interrupter, SCADA, Control & Relay Panel and 8MVA, 12. A tree structure is formed between the buck substation and several TSSs in the May 19, 2022 · An electric substation which converts electric power from the form provided by the electric utility company to an appropriate voltage, current and frequency to supply railways and other electric traction systems is known as a traction substation. The AT power supply and V/X traction transformer wiring are adopted in traction substation system. In summary, electrical substations are essential components of the power grid, acting as intermediaries between power plants, high-voltage transmission lines, and low-voltage distribution networks. This type of substation operates above the 400 kV voltage range. Mar 1, 2014 · Diagnosis process of at traction substation. Core modeling and tools allow you to quickly and easily build 3-phase and 1-phase AC and DC network one-line diagrams and GIS views with unlimited buses and elements including detailed instrumentation and grounding components. vishalgohel12195. The dwell time and terminal time are 40 and 200 s, respectively. Service life assessment method of traction transformers and converters according to the observed level of depreciation are offered. Electric power system. Conference: 2022 7th International Conference on Intelligent Oct 5, 2023 · Public electric transport grids tend to be oversized and underutilized. Secondly, through establishing the dynamic Bayesian network, the Jun 12, 2011 · Traditionally substations were designed upon a distinct separation between the substation components and the supervisory control and data acquisition (SCADA) system. 1 Rectifier unit model. Many installations seen today were first built more than 100 years ago, some when Jan 25, 2013 · High Voltage Substation. The light arrestor components are connected among the earth as well as a line which Jul 4, 2023 · 7. These substations are generally located at the sending and receiving ends of the HVDC power lines. Hitachi Energy addresses this requirement with pre DC Traction Power Supply May 7, 2020 Slide 12 1) Enviline TCI thyristor inverter is based on the same product platform Controlled rectifier Enviline TCR Enviline TCR 1) is a controlled rectifier. 2021. Mar 19, 2018 · Traction Power Substations (SS) – An electrical installation where power is received at high voltage and transformed to the voltage and characteristics required at the catenary and negative feeders for the nominal 2x25 kV system, containing equipment such as transformers, circuit breakers and sectionalizing switches. Shop tracks are solidly grounded for maintenance personnel safety. 1109/ICIEA54703. The main equipment which are provided at a traction Jun 7, 2022 · traction substation based on key components detection and geometric ranging. This increases the reliability of the power supply Apr 8, 2020 · In this paper, firstly, the Bayesian network is used to analyze the reliability of the metro traction substation. Oct 29, 2015 · The key components of an electric traction system include traction substations that transform and rectify power, overhead wiring to transmit current, pantographs or trolley poles on vehicles to collect current, track to complete the circuit, and traction motors on vehicles powered by the collected current. The traction substation obtains the electric energy from the three-phase public grid, and through the transformer, the three-phase voltage is transformed into two separate single-phase AC voltages to feed the traction networks . The paper is organized as follows. The medium voltage cables connect the main substations, traction substations, and step-down substations. Individual components of the 2x25kV TPSS are modelled to perform load flow analysis using a current injection algorithm. Conference: 2022 IEEE 17th Conference on Industrial Electronics and DC-traction line and power supply, in antiparallel with the existing traction substation with six-pulse diode rectifier. 1 of the Scope of Work for applicable requirements 1,1 Fig. e. This paper proposes a precise fault location method applicable to Modular traction substation refers to 6-20 kV voltage class and is designed for operation in automatic mode, being an unattended installation. In one-side feeding power supply scheme, the length of power supply arm of each traction substation is set to 25 km, with the section post placed at 25 km. Figure 7. Bus design. 5 kV system. Over time, the AC-DCconversion groups have made significant progress in terms of performance, efficiency, maintenance and reliability [8-9]. Typical components include busbars to carry This paper presents the parameter design of components of thyristor switched capacitor (TSC) compensation with step-down transformer under the restriction of reactive power balance, and also mentions the pattern of TSC cooperated with fixed capacitor banks. High voltage substations are points in the power system where power can be pooled from generating sources, distributed and transformed, and delivered to the load points. Grounding and lightning protection design. Each traction substation has two 132 kV independent power lines. C. Apr 30, 2023 · Substation components. Nov 14, 2023 · To avoid this problem, Refs. © 2023 The Authors. In order to solve the power quality problem and eliminate the neutral sections at exit of the traction substation, a new traction power supply system is proposed for the high speed and heavy haul Traction substation reliability is of vital importance for railway transportation safety. The modelling of system components is the key process dictating the success of system simulation. Standardized traction voltages are 750 V DC, 1500 V DC and 3000 V DC. AC, DC and synchronous traction motors for electric multiple units (EMUs), and electric and diesel-electric locomotives. The substation manufacturer wired out control, indication, and analog points to an Interface Terminal Cabinet (IFTC). 5 kV between the center-tap and the respective terminals. This system was built by Amtrak in the late 1990s and supplies locomotives with power from an overhead catenary system at 25 kV alternating current with at 60 Hz, the standard frequency in North America. 1 Constructive Aspects of the Line 142 3. The cost of the traction transformers and diode rectifiers can account for up to 23% of the total capital costs of a DC traction substation . Hitachi Energy takes care of design, engineering, construction and commissioning of complete traction power supply systems for both long distance rail and mass transit applications. Jul 21, 2016 · AI-enhanced description. Layout of control house. Nov 17, 2022 · The total power supply distance is set to 50 km, which is powered by two traction substations (TSS1, TSS2). Key benefits: Jan 22, 2024 · Figure 6 is the model of the traction power supply system including two train vehicles passing up and down direction scenario. Section II introduces the structure of the active DC-traction substation. 3. 2. It consists of transformers, switches, circuit breakers and other equipment to step up or step down voltages. These systems convert the electrical power supplied by the utility into a form suitable for providing power to a rail system. Application of modern equipment and advanced solutions in the field of electrical engineering, based on years of experience, ensures safety and reliability in equipment operation. 2 Structure of Traction Power Substation 103 3. 5 also represents a typical AC traction power network with multiple trains on up and down tracks. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. Item Description Unit Quantity Material Rate Labour Rate Amount 1,0 11kV AC METAL CLAD SWITCHGEAR See clauses 9. Moises Ramos Moises Ramos, PE, is the OCS Section Manager and National Practice Lead for HDR in Denver, CO. 3 MVA & 16 MVA Auto-transformers and 132kV & 220kV Scott-connected & V-connected Power traction transformers. 1109/ICPEI52436. There is a wide variety of electric traction systems around the world and these have been built according to the type of railway, its location and the technology available at the time of the installation. 6. 2 Catenary Earthing system on 3-kV DC traction substations means = a complete installation comprising one or more earth electrodes, earth conductors and earth bars as required. Thus, the operation in traction regime of the traction substation is accompanied by the active filtering mode of VSI and improved power quality is ensured. The three-phase voltage from the local utility is stepped down and rectified in the traction substations to provide the required DC voltage. Ground-level power supply systems and third rail products including side and bottom contact shoes. Aug 27, 2019 · Untangling the various equipment you might see in an electrical substation. They help manage voltage levels, maintain grid stability, and ensure efficient power transmission and distribution to meet the demands of Particle swarm optimization (PSO) technique and analytical approach are used to determine the optimal spacing between substations. , ISD-Net for isolation switch detection and geometric ranging May 1, 2019 · The main advantage of the Gaussian components method is that the probability density functions of any variable is directly obtained. With over 17 years of specialized experience in design, construction, inspection, testing and commissioning of electrification projects Moises brings his unique expertise on overhead contact systems and traction power systems to his clients. The capability Nov 7, 2023 · Autotransformer (AT) traction network with bilateral power supply mode is an effective and economical electrified railway feeding scheme. 3. Key Components of a Traction Power Substation. Substations or “grid nodes” with the strategic integration of high-voltage power electronic converters, discussed from here on as solid state power substations (SSPS), can provide advanced capabilities and facilitate evolution of the electric power system. B. , ISD-Net for isolation switch detection and geometric ranging Introduction. Special emphasis is placed on optimizing the footprint of the substations. • Utilizing separate traction power substations for the main line, yard, and shop. The Railway receives 3-phase power supply from the supply Authority at a single point near the grid substation from where the Railway runs its own transmission lines providing its own traction sub-stations. However, due to the nonlinear relationship between measured reactance and distance, as well as the complex power flow distribution, the accuracy of fault location is facing severe challenges. 10006054. The whole length of Hefei-Nanjing line is 166. December 2022. Dec 25, 2018 · The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. For this purpose duplicate feeders comprising of only 2 phases are run from the nearest grid substation of the Supply Authority to the traction traction substation based on key components detection and geometric ranging. 5kV AC to 1,000V DC to power the 3rd rail. Amtrak’s 60 Hz traction power system operates along the Northeast Corridor between New Haven, Connecticut, and Boston, Massachusetts. The traction substations allow the power flow control from the superior power grid to the traction grid. The reliability model of the system based on Bayesian network is established by GeNIE simulation software, which helps to calculate the system’s failure probability. Furthermore, it will typically only be possible to use this scheme if very high resolution aerial imagery of the substation is available. This article examines the core equipment, technical challenges, and advantages of traction substations. Jun 11, 2024 · 3. Factors affecting the number of systems are the need for more than one voltage level and the need for duplicating systems. Note: This section describes an advanced tagging scheme for substations. The ways Environmental Requirements: System equipment shall be designed to conform to the environmental conditions defined in Contract Specifications Section 34 21 01, Traction Power General Requirements. 4. 1 Connection of Electrical Substations 100 3. Apr 15, 2022 · State Recognition of Isolating Switch in Traction Substation Based on Dual Network. The load sharingbetween the traction substations is almost the same as the minimum power capacity. These Oct 26, 2020 · To reveal the penetration characteristics of high-frequency harmonics of the traction network to the three-phase 380 V power system in the traction substation (TSS), the harmonic equivalent circuit model and harmonic penetration mathematical model of the two-phase to three-phase Scott-T transformer are established. Sep 29, 2023 · The electric power for high-speed electric traction comes from power plants. 2 shows, two substations are fed from different phases and in between this bridge interrupter is shown. Traction substations, rectifiers, AC-DC converters, and DC-AC inverters. Finalization of relay setting guidelines for 2x25KV AC traction system. 1 Diagram of a Conversion Substation 104 3. ft ms ax ec gm yt wv me rt mt