Commissioning and maintenance of power supply systems

AESAT ELECTRIC operates in the field of electrical engineering.

We perform:

• commissioning and testing of transformer substations, switchgears up to 20 kV;
• commissioning of relay protection devices for transformer substations and switchgear up to 110 kV;
• installation of secondary circuits, assembly of automation and telemechanics panels;
• inspection and diagnostics of power supply systems up to 20 kV, operating parameters of the electrical network, electromagnetic environment of substations up to 330 kV, lightning protection and grounding systems;
• comprehensive implementation of electricity metering systems, telemechanics, access control, automatic reserve input and reactive power compensation;
• maintenance, repair, preventive control of transformer substations and switchgears up to 20 kV.

Measurements and high-voltage tests of electrical installations

Our laboratory measures and tests electrical installations up to 20 kV. The laboratory is accredited to ISO/IEC 17025.

The laboratory specializes in measurements of the following objects:

• transformer substations up to 20 kV;
• electrical switchgears up to 20 kV;
• power supply systems of industrial enterprises, administrative and office buildings, residential buildings, communication enterprises, housing and communal services.

Commissioning of substations and switchgears

AESAT ELECTRIC performs commissioning of transformer substations and switchgears up to 20 kV.

The list of commissioning facilities includes:

• power transformers (oil, dry, state-of-the-art, sealed, low-noise, energy-saving);
• measuring current and voltage transformers;
• low-voltage circuit breakers with rated current up to 5 kA;
• medium voltage switching devices;
• secondary switching schemes;
• relay protection on microprocessor and electromechanical basis;
• automatic meter reading for electrical networks;
• telemechanics systems;
• automatic reserve input device;
• operational current systems;
• grounding devices, potential equalization systems, lightning protection;
• reactive power compensation devices.

Maintenance and repair of power supply systems

AESAT ELECTRIC performs maintenance, repair and replacement of switchgear elements up to 20 kV. We are upgrading old switchgears, replacing old elements with modern ones.

The list of works includes:

• replacement of relay protection devices with modern microprocessor-based;
• replacement of switching devices;
• replacement of current transformers, voltage transformers;
• replacement of secondary circuits;
• expanding the functionality of switchgear: adding automation and telemechanics functions.

Automatic meter reading for electrical networks

AESAT ELECTRIC implements and maintains automatic meter reading (AMR).

We implement and service AMR in power supply systems up to 20 kV:

• transformer substations and switchgears;
• electric generation;
• industrial enterprises;
• warehouses, logistics centers;
• stores, hypermarkets;
• administrative and office buildings;
• apartment buildings;
• construction sites.

We carry out a complex of works necessary for the implementation of the AMR:

• inspection of the facility, determination of the need and scope of work for the implementation of the AMR;
• elaboration of options for the implementation of the AMR;
• preparation and approval of the design assignment;
• project development;
• supply of equipment and materials;
• installation, installation supervision;
• commissioning of AMR;
• support during operation.

Telemechanics and dispatching systems

AESAT ELECTRIC implements telemechanics and automation for transformer substations, electrical switchgears, in power supply systems of greenhouses and fast food restaurants.

The functionality of the implemented systems includes:

• object access control: door position (open/closed), motion sensors;
• position control of switching devices (on/off);
• voltage monitoring;
• remote measurements of currents, voltages, power (from electricity meters, protection terminals, digital converters);
• control of switching devices (switches, disconnectors);
• automation of reserve input;
• telesignalization in case of accidents and abnormal modes;
• linking events and measurements to the exact time servers;
• generating reports, displaying data in tabular and graphical forms.

In agriculture, we automate greenhouse lighting control systems. The implemented functionality includes:

• lighting operation according to the algorithm and sensor signals;
• object access control: door position (open/closed), motion sensors;
• voltage monitoring;
• remote measurements of currents, voltages, and power (from electricity meters or digital converters);
• automation of reserve input;
• telesignalization in case of accidents and abnormal modes;
• generating reports, displaying data in tabular and graphical forms.

In fast food restaurants, we implement dispatching and automate the following functions:

• lighting operation according to the algorithm and sensor signals;
• object access control: door position (open/closed), motion sensors;
• voltage monitoring, automation of reserve input;
• remote measurements of currents, voltages, power, water, gas;
• telesignalization in case of accidents and abnormal operating modes of power supply, ventilation, lighting, cooling, air conditioning;
• linking events and measurements to the exact time servers;
• generating reports, displaying data in tabular and graphical forms.

Commissioning of relay protection for electrical substations

AESAT ELECTRIC performs commissioning of relay protection devices of transformer substations and switchgear up to 110 kV.
We work with terminals: Micom, Sepam, Siprotec, REF, BMRZ, Relematics and other models.

We carry out commissioning of relay protection devices for industrial enterprises, power grid facilities, logistics centers, housing and communal services enterprises. Including specific objects: generation, step excavators, high-voltage motors.

Assembly of automation cabinets and installation of secondary circuits

AESAT ELECTRIC performs assembly of non-standard automation and telemechanics cabinets according to individual projects.

Diagnostics of grounding and lightning protection systems

AESAT ELECTRIC diagnoses grounding and lightning protection systems of transformer substations of 35 kV and above, overhead power lines, industrial facilities, cellular communication facilities. We restore the grounding circuit, measure the grounding parameters, perform specialized calculations.

Preventive monitoring of substations and switchgears

AESAT ELECTRIC performs preventive monitoring of transformer substations and switchgears up to 20 kV.

The composition of the work performed includes:

• analysis of technical documentation, relevance and completeness of diagrams, instructions, logs;
• measurement of equipment parameters and testing;
• adjustment of primary mechanisms;
• test control, testing the operation of all elements of the electrical installation;
• verification of electronic and microprocessor devices, algorithms, software;
• minor repairs on site, organization of repair of warranty and complex equipment on the basis of the manufacturer;
• updating or restoring documentation (diagrams, instructions).

Electromagnetic compatibility

AESAT ELECTRIC performs a survey of the electromagnetic environment of high-voltage power stations, substations and industrial enterprises.

The scope of the electromagnetic environment survey for a high-voltage electrical substation includes:

• diagnostics of the grounding device;
• diagnostics of interference in the normal and emergency operation of the facility;
• monitoring of climatic parameters in the locations of microprocessor devices;
• calculations of electromagnetic interference;
• analysis of the results, assessment of compliance of the interference level with the requirements of standards and the actual noise immunity of technical assets;
• development of corrective measures.

Quality of electrical energy

The laboratory AESAT ELECTRIC measures and analyzes the quality indicators of electricity in power supply systems up to 330 kV. The laboratory can determine electricity quality indicators, identify the guilty party and find ways to solve problems.

Lightning protection

AESAT ELECTRIC develops solutions for lightning protection of complex objects.

We perform lightning protection of new and existing facilities. We also analyze objects after being struck by lightning and develop solutions to improve the reliability of lightning protection.

Contact us to get the details and order the work.

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