References
References
BELGRADE WATER SUPPLY AND SEWERAGE, Monitoring System of Belgrade Water Supply


Monitoring System of Belgrade Water SupplyBelgrade water supply was founded 115 years ago and over the years, it constantly expanded its capacity, following the demographic and industrial city growth. During this period, the number of Belgrade citizens increased 25 times, while the quantity of fabricated water increased 110 times. The 90’s crisis stopped all the development projects. It most affected the application of modern solutions in areas of water monitoring, fabrication control, distribution and quality.

Over its agency JICA (Japan International Cooperation Agency), the Government of Japan approved JKP BVK (Public Communal Company) (Belgrade Water Supply and Sewerage) a donation to carry out the Project for Promotion of Water Supply System in Belgrade. The scope of the project was to:
1.Form SCADA (Supervisory Control And Data Acquisition) system for monitoring and control of wells, distribution pumping stations and reservoirs.
2.Deliver pumps, frequency inverters and soft-starters necessary for reconstruction of 7 distributive pump stations
Monitoring System of Belgrade Water Supply3.Renew the equipment for water quality analysis

Project carrying out has been devised into two phases. The goal of the first phase was to form the SCADA system that includes 155 structures totally:

MCC - Main Control Center 1 location
LCC - Local Control Center 4 locations
Pumping stations of type A (with local SCADA server) 14 locations
Pumping stations of type B (without local SCADA server) 14 locations
Well pumping stations 102 locations
Reservoirs 20 locations

Monitoring System of Belgrade Water Supply


On tender, announced in Japan in January 2006, the carrying out of the job has been granted to Japanese Company EBARA and its subcontractor MIKRO KONTROL.

The main functional tasks placed in front of SCADA system were:

1.Data acquisition and archiving
real-time digital and analog data acquisition from all the facilities connected to the system (around 10.000 tags);
Archiving of all relevant gathered information, based on acquired data, into relational data base;
Displaying of real-time and archived data, over synoptic displays, trends, graphs and tables.

2. Real-time control and monitoring of well pumps
Monitoring System of Belgrade Water SupplyRemote control and monitoring for 65 well pumps located on the left bank of river Sava over LCC Bežanija;
Remote control and monitoring for 40 well pumps located on the right bank of river Sava over LCC Banovo brdo;

3. Real-time monitoring of distributive pumping stations and reservoirs
Monitoring 27 distributive pumping stations connected directly to MCC or over one of four LCCs;
Monitoring 20 reservoirs connected directly to MCC


Hidraulička shema sistema

Hierarchically, according to information flow, the architecture of SCADA system is devised into three levels. Such organization was influenced by anticipated functions which the system had to fulfill, as well as the topology of the facilities located in the diameter of around 40km.

Monitoring System of Belgrade Water Supply

On the first, highest level, the MCC (Main Control Center) is placed, in which data is acquired, presented and archived from all the facilities connected into the system. On this location, a total of 6 servers and 4 workstations are installed:

Master SCADA server represents the main SCADA server in the system. Inside it, real-time data is stored, collected from all facilities in the system. Besides the presentation of real-time data for workstations (around 400 displays), this server has the function to generate all types of graphical and tabular reports based on archived data;
Master SQL server responsible for archiving all types of information collected in MCC and four LCCs into a relational data base for their later presentation and analysis;
Backup SQL server is a redundant SQL server in the system, gathers data by replication from the master SQL server;
DC (Domain Control) server responsible for proper domain functioning of entire SCADA system, with all services that such complex system like

Monitoring System of Belgrade Water Supply

 this one requires;
GPRS (General Packet Radio Service) server has the role of communication server responsible for data acquisition from all facilities that are only connected via GPRS network with MCC. This server forwards the collected data to master SCADA server;
WEB server distributes and presents data over the Internet in real-time and archives data into SCADA and SQL servers, available to all authorized personnel.

Second, middle, hierarchical level is represented by four LCCs (Local Control Centers). Each LCC has the duty to acquire, present and archive information locally, from the facilities that make technologically rounded totalities, as well as to forward data further to MCC. On each four locations, a total of 10 servers and 4 workstations are installed:

Local SCADA/SQL servers for local real-time data presentation and archiving, installed on each of the existing four LCCs.
Local/redundant DC servers installed on LCC Bežanija and LCC Banovo brdo;
Monitoring System of Belgrade Water Supply


GPRS servers for data acquisition from well pumping stations on the left and right bank of river Sava, installed on LCC Bežanija and LCC Banovo brdo;
TN (Telecommunication Network) server responsible for monitoring the entire telecommunication network of SCADA system, with all belonging communication lines and devices;

On third, lowest level, facilities connected to some of the four LCCs or directly to MCC exist. Besides controlling electro and communication cabinets on more relevant distributive pumping stations, local SCADA/SQL servers and workstations are installed. Main equipment in facilities consists:

59 controlling electro-cabinets manufactured and tested in accordance with IEC 60439-1/ IEC 60204-1 standard;
Monitoring System of Belgrade Water Supply


14 server racks with belonging SCADA workstations;
126 new PLCs as well as around 80 existing on which applicative adaptations were made in order to connect them to the system;
25 touch operator panels;
20 chlorine analyzers;
26 L3 switches, 32 SHDSL routers and 149 GPRS routers;




Monitoring System of Belgrade Water Supply

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MIKRO KONTROL d.o.o.
Vase Pelagica 30
11000 Belgrad, Serbien
+381 (0)11 3699 080
+381 (0)11 3699 939
office@mikrokontrol.rs
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