company Mosgortrans Urban Network of Quick Charge Stations ...npp-energy.ru/uploads/catalog/pdf/charging_stations_en.pdf · Mosgortrans Moscow 2012 ... Introduction Main components

Urban Network of Quick Charge Stations for Electric Vehicles — Concept of Development

Moscow 2012Mosgortrans ZAO NPP Energia

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Charging stations

Maintenance

Introduction Main components

The implementation of the pilot project "Transport Innovations" provides, besides of designing and bringing into service new types of battery-driven transport means, also development of approaches aimed to establish infrastructure for the urban inno-vative transport.

This document presents organizational variants and engineering solutions offered for integration of innovative transport opera-tion technologies into existing structure of Moscow transport.

The operation of electric vehicle within the city provides for suffi-cient number of available charging stations. Considerably large avail-able power facilities and available places for the stations are required to build such a network.

At the initial stage of electric vehi-cles infrastructure development, it will be important to ensure qualified maintenance and prompt emergency repair service.

Mosgortrans

ENERGIAcompany

Mosgortrans bld. 1, 16, Krasnoprudnaya St., Moscow 107140 Tel. (499) 237-33-47, 264-24-09 www.mosgortrans.ru

Research and production

Urban network of quick charge stations for electric vehicles. Concept of development

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Mosgortrans

It is necessary to take into account prospective growth of the electric vehicles sector and consider beforehand the increasing power of the charging stations.

Key aspects of charging stations for private and public electric transport

Private electric cars

– Availability of charging stations

– Charging time

– Cost

– User-friendliness

Public transport

– Power of charging stations

– Charging time

– Standartisation

Charging the electric vehicles Charging stations

Domestic network

Slow charging

Quick charging

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bld. 1, 16, Krasnoprudnaya St., Moscow 107140

Tel. (499) 237-33-47, 264-24-09

www.mosgortrans.ru

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Quick charging time shortened down to 30 minutes will allow efficient use of "point-type" charging terminals featured by minimum footprint and maximum throughput, and contrariwise, "slow" charging stations with time of charge 5–10 hours do not require big peak power for their operation and are more suitable for placement on vehicle parking sites.

Shorter time of charging allows improving the efficiency of the charging station system through shorter waiting time until charging is complete, reduced points of connection and, as a consequence, decreased total area required for construction of charging terminals.


6 7Slow charging

– Lower cost per charging point

– Lower peak power

– Increased number of points

– Longer charging process

– Only in places of long-term parking

Quick charging

– Higher cost

– Higher peak power

– Reduced number of points due to higher throughput – Installation in places of short- term parking – Decreased footprint

Comparison of charging systems

Charging time Peak power

Quick charging 10 to 30 minutes 55 kW

Slow charging 3 to 14 hours 3 to 10 kW

Efficient use of reserve power on traction substations

The use of the existing traction substations network as location sites for charging points solves the issues related to

Availability of necessary power reserves, distribution over entire city area, existing maintenance service with personnel, as well as placement near main passenger transport routes are the key factors that determine development strategy for quick charging stations urban network for the electric vehi-cles.

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allocation of big power for establishment of the charge facili-ties.

8 9Near 200 traction substations distributed over entire Moscow enable to create efficient network of quick charging points.

Traction substation Contact traction network

Charging unit

Charging terminal

Distributed network of stations

Block diagram of the system

The traction substation is equipped with the charging unit connected to existing power supply system for trolley-buses (tramways) and with the terminal designed for quick charging ofelectric cars and buses.

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Equipment for use of reserve power on traction substations

Functional diagram of charging system

Modular design of the charging system ensures necessary maximum power.

Integration of charging unit into traction substation

+600V busbar

-600V busbar

Rectifier

±600V switchgear

Charging unit

Charging terminal

Contact network

Control of protection panelCharging terminal

-600V

+600V

Control of inverter

Inverter No.1 Inverter No.2 Inverter No.2Control module

Traction voltage 600VDC can serve as traction substa-tion reserve power. Availability of necessary surplus power makes it possible to establish quick charge points without increase in substation installed power.

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Wide range of charging station designs allows quick charging of the electric buses from the traction substation network, industrial network, using current up to 1000А.

Substation/Industrial network

Input ±600V/~380V

Output 0–500V 150А

Traction substation

Input ±600V


Industrial network

Input ~380V


Traction substation

Input ±600V


Technical aid vehicle

The electric vehicle can be charged even when no charging station is available nearby.

The vehicle with generator and pre-charged storage devices installed on it can quickly (within 15–40 min) charge the electric car when no charging station is available nearby.

Charging system tester

Test of charging station operation. Check of electric vehicle charging system.

The diagnostic equipment allows eliminating the failures of the charging points promptly, setting and calibrating of consumed electric power metering systems.

Variants of charging stations

Service

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14 15WЕВ server: – Moscow map showing locations of the charging stations (CS)

– Indication of the CS statuses (in/out of operation…)

– Statistics of CS work (average charging time, daily load, etc.)

– Service information (with access protected by password): status, control, power metering

– News related to development of electric vehicles, etc.

– Forum

Management and payments

When users enter the portal via internet, they can see information about location of the charging stations, instructions how to use the station, and also have the opportunity to ask questions or communicate with other users, etc.

Thus, the portal serves a sort of centralized communi-cation site for electric cars owners.

When users wish to employ services of the charging sta-tions network, they register on the portal via internet and receive unique identification numbers and accounts for the payment system.

Modern payment systems (like OSMP company) and bank cards enabling payments via internet allow the users to deposit amounts to their accounts. To charge the electric vehicle, the user enters ID on the CS display and if account balance is positive, the vehicle can be charged.

Settlement scheme with prepayment enables at the first stage of CS network operation to implement flexible pattern of commercial settlements with optimum labor expenditures, using the single portal that works as instru-ment for promotion and advertising of the CS network's services.

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ZSE-140-400 charging station

Functions of ZSE-140-400 charging station:

– Charging is controlled both in automatic mode, using BMS battery state control system, and in manual mode. The charging station has overvoltage, charging voltage/current, temperature and wrong polarity protections.

Main functions of charging control system:

– Setting output values for charging current and voltage;

– Selection of charging mode (by time, by electric power consumed for the charging, until specified sum of money, until complete charge);

– Selection of charging on/off time;

– Charging controls (on/off);

– Charging process indicator (voltage, current, charging off time);

– Indication of components failure;

– Selection of payment method.

Its design is based on high-frequency conversion of 600VDC supplied by traction substation to DC power of voltage up to 560V and current up to 140А.

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Intended use: Charging stations of ZSE-140-400 series are designed for charging electric cars and buses of public transport that use lithium batteries.

18 19Main specifications:

Power 56 kW Input DC voltage 450–720V Output voltage 400–560VOutput current 0–140А Efficiency, at least 0.9 Operating temperature -40…+60°С

Power of the charging station can be increased by parallel connection of several ZSE-140-400 stations.



Design features:

ZSE-140-400 station consists of three parts:

–

–

–

Charging indicatorIlluminated when power is on

Grip

Cable

HandlePull the handle to connect terminal to the vehicle

Interface guidesProvide connection with the vehicle

Latch

Disconnection button

YPES-15-1197Е power connector

ShZ-ZSE protection panel containing quick-acting DC circuit breaker and 2-pole motor-driven disconnector; panel overall dimensions are 400×2000×600mm;

INV-ZSE-140-400 inverter, which converts direct current from traction substation busbars to speci-fied charging current, provides protection from short circuits and overloads on the charging sta-tion's output. The inverter has modular design and consists of 14 low-power inverters (PNR-160М (400V/10А) working in parallel. 2-pole motor-driven disconnector is installed at the inverter output. Panel overall dimensions are 800×2000×800mm;

Charging terminal with the pistol-shaped power connector for connection to electric bus and control circuits of BMS system.

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Tel. (499) 237-33-47, 264-24-09

www.mosgortrans.ru



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20 21СНАdеМО is a standard for electric vehicles quick charging developed by international association of Nissan, Toyоtа and Mitsubishi concerns.

Work protocol is sent to common center via GSM wireless communication link

Multimedia sensor control interface allows charging the electric vehicle by means of few touches and visually demonstrates the whole charging process

Keypad for control of main charging modes

СНАdеМО connector ensures safe and quick charging of any electric vehicle complying with СНАdеМО standard

Quick and convenient payment for electrical power consumed for the charging using bank card

Charging terminal Diagnostics system

Web interface for clients:

– Messages about failures – Advices on maintenance – Expenses statistics – Locking in case of vehicle theft

For service personnel:

– Convenient, intuitive user interface – Software faults can be debugged via network, without personnel presence

– Table of operations performed, by columns

Vehicle No.

T start T stop Charge energy

Charge %

Vehiclefailures

Chargingstationfailures

Paymentstatus



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№

Charging station is supplied from DC busbars of traction substation

Charging station is supplied from 10kV AC busbars of traction substation

Notes

1Set power of traction substation remains the same.

Set power of traction substation must be increased.

Preparation of new specification for adding power.

2

Additional 10kV switchgear, medium voltage transformer (100kVA), automatic load transfer system are not required.

10kV switchgear, medium voltage transformer (100kVA), automatic load transfer system are required.

3 additional cubicles with high-voltage switches and at least 1 cubicle with MV transformer + ALT system on 10kV side are required.

3Charging unit is cheaper, rectifier is not required.

Charging inverter is more expensive.

Due to use of rectifier in variant with power supply from AC busbars.

4Charging unit has smaller overall dimensions.

Charging unit has bigger overall dimensions.

Due to excluded rectifier, 10 kV switchgear, ALT system, 10kV transformer.

5Power factor correction unit for charging station is not required.*

Power factor correctionunit for charging station is required.

* When considering charging stations only.

6No need to obtain new specifications for connection.

New specifications for connection are required (see par.1).

Charging station concepts

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The first station in Moscow, fast charging electric vehicles on the 2nd Street Miusskaya

Moscow 2012Mosgortrans ZAO NPP Energia

Mosgortrans Energy department bld. 1, 16, Krasnoprudnaya St., Moscow 107140 Tel.: (499) 237-33-47, 264-24-09 [email protected], www.mosgortrans.ru

NPP Energia5, 1st Vladimirskaya St., Moscow 111123 Tel.: (495) 765-1817, 672-0137, (499) 785-1007 Fax: 368-4162, [email protected], www.npp-energy.ru



Mosgortrans

ENERGIAcompanyResearch and production

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company Mosgortrans Urban Network of Quick Charge Stations ...npp-energy.ru/uploads/catalog/pdf/charging_stations_en.pdf · Mosgortrans Moscow 2012 ... Introduction Main components