National Electric Load Distribution Network

Industrial system control of electricity, optimal transport of electrical energy from power plants to the distribution network, and operation and maintenance of the Hungarian Electricity System (VER).

The HIDIC/HALDIS computer process control system operating between 1978 and 2000. The hardware consisted of two imported Hitachi HIDIC-80 computers, the programming and commissioning of which was carried out by Hungarian specialists in close cooperation with Hitachi engineers, the work being carried out both in Budapest and in Japan.

The first Hungarian freight distribution company (Central Freight Distribution Company) began operating on September 23, 1938, which can be considered the ancestor of the company.

In 1949, ERIK established the OVT, which began its operational activities on November 23 of that year.

A significant role in the foundation was played by: Vendel Szieghardt Botló, head of the Central Load Distribution System, the predecessor of OVT, and head of department of the Power Plants Industrial Center (ERIK).

In 1952, the company moved to Úri Street in the Buda Castle, and then in 1978 to Petermann Bíró Street.

On October 19, 2000, the Hungarian Electricity Transmission System Operator Limited Liability Company (MAVIR Rt.), established by MVM, took over the tasks and assets of OVT. Since 2009, the company has been operating in Budapest's 3rd district, on Anikó Street.

The HALDIS (Hungarian Automatic Load Dispatching System) and the HIDIC-80 computer that formed the basis of the system, which was put into operation in the late 1970s, were among the most advanced not only in the CDU, which united the Eastern European electricity systems, but also in the entire world.

The application of the modern process control computer system has already enabled the versatile optimization of the energy system's operation, and with the support of the associated telemechanical system, it has not only provided reliable information, alarms, quickly available tests and advice based on real-time data to the plant managers, but also provided the opportunity for fast and sensitive on-line interventions in the field of power plant regulation, which is essential in system management.