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DLYa_PEREVODA_PS_Oktyabrskaya_en.docx
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  1. Implementation of acs tp basic functions

    1. General requirement

Basic functions for ACS TP SS implementation are:

  • Monitoring of the current mode and the state of the key diagram of substation for all voltage classes, which is implemented in ACS TP through:

    • Condition monitoring – processing of digital information

    • Measurement and processing of analog information

  • Supervisory control of controlled equipment of substation, including:

    • Manual and automatic operation

    • Operational management

    • Operational planning

  • Data exchange with the other levels of dispatcher control and related subsystems at the substation

  • Maintenance of configuration database and archive database

  • SHS ACS TP components synchronization

  • Test and self-test of SHS components

    1. Monitoring of the Substation Current Mode and the Key Diagram Status

Monitoring shall include:

  • Equipment status monitoring

  • Basic current mode parameters of the SS main electrical equipment monitoring:

    • Voltage and frequency at bus bars of all levels

    • Cross- flows of active and reactive power at all connection, transformers and autotransformers

    • SS main switching units monitoring

    • Status of main and auxiliary electrical equipment monitoring

In the primary processing of information must be carried out validation of input measurements and signals. The Supplier shall describe in detail the used methods of prove of the reliability of information.

      1. Equipment Status Monitoring

Digital data on the status of SU, OLTC active branch lines are input into ACS lower level devices (IED, CPI modules, controllers) directly or through the contacts of intermediate relays, potentiometric sensors, etc.

Low-level devices must form time tags with an accuracy of 1m/s with the equipment status signal, which are transmitted to the upper levels by IEC 61850 protocol.

Digital data signals on position of the switching units (SU) are validity checked by inserting two signals from one SU: “closed” and “open” received from normally closed contact and normally open contact related to one SU status. In case of simultaneous appearance of two similar signals, the SU position signal is considered invalid.

Based on the acquired data, the SS electrical connections operational diagram and the SS mode of operation are defined, which displays to the operating personnel and is used to perform automated control.

For reliable actuation of “dry” contacts it is required to use their voltage “wetting” not less than 110 V DC.

      1. Process parameters monitoring

Measurement of the process parameters, equipment operation parameters are performed by primary detectors and must provide accurate, reliable and timely data for all subsystem and functional components of the ACS TP.

For monitoring the status of connecting circuit and the system parameters at the connection level (lower level) it is required to use the cell controllers (connections).

Below is a list of parameters to be collected and processed at the substation. The list can be updated at the stage of detailed design.

Equipment

Parameter

Source of information

OHL 330, 110 kV

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Phase voltages

MP controllers of ACS TP, connected to VT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, calculation

Sectionalizing switch

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Sulfur hexafluoride switches 110, 330 kV

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Gas pressure (2stages), fault

Group of reactors

Phase currents

MP controllers of ACS TP, connected to CT, winding P

Autotransformers

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, or calculation

OLTC positions

Temperature and technological parameters of oil

Sensors of technological parameters

Auxiliary transformers

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, or calculation

High voltage buses

Phase voltages

MP controllers of ACS TP, connected to VT, winding 0,5

Frequency

MP controllers of ACS TP, connected to VT, winding 0,5

The accuracy of 3 decimal places

Low voltage buses

Phase voltages

Instrument transducers

Equipment of operational DC

The voltage on the sections of the DC board

Battery voltage

Positive voltage of battery phase to earth

Battery load current

Charger current

Current charging the battery

DC board controller

Auxiliaries of 0.4 kV

Current A

Electricity active (reception)

Auxiliary board controller

Buildings and structures of GIS

Indoors air temperature

Humidity indoors.

The conditioning and ventilation subsystem controller.

Temperature, humidity, precipitation, wind direction and speed

The weather station controller

RP & SA terminals

Protection activation

MP terminal of PR & SA

Fault signal terminal

MP terminal of PR & SA, dry contact watchdog

Equipment

Parameter

Source of information

OHL 330, 110 kV

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Phase voltages

MP controllers of ACS TP, connected to VT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, calculation

Sectionalizing switch

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Sulfur hexafluoride switches 110, 330 kV

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Gas pressure (2stages), fault

Group of reactors

Phase currents

MP controllers of ACS TP, connected to CT, winding P

Autotransformers

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, or calculation

OLTC positions

Temperature and technological parameters of oil

Sensors of technological parameters

Auxiliary transformers

Phase currents and zero sequence

MP controllers of ACS TP, connected to CT, winding 0,5

Electricity active, reactive (reception, return)

MP controllers of ACS TP, or calculation

High voltage buses

Phase voltages

MP controllers of ACS TP, connected to VT, winding 0,5

Frequency

MP controllers of ACS TP, connected to VT, winding 0,5

The accuracy of 3 decimal places

Low voltage buses

Phase voltages

Instrument transducers

Equipment of operational DC

The voltage on the sections of the DC board

Battery voltage

Positive voltage of battery phase to earth

Battery load current

Charger current

Current charging the battery

DC board controller

Auxiliaries of 0.4 kV

Current A

Electricity active (reception)

Auxiliary board controller

Buildings and structures of GIS

Indoors air temperature

Humidity indoors.

The conditioning and ventilation subsystem controller.

Temperature, humidity, precipitation, wind direction and speed

The weather station controller

RP & SA terminals

Protection activation

MP terminal of PR & SA

Fault signal terminal

MP terminal of PR & SA, dry contact watchdog

Insert single-phase currents and voltages is performed by measuring current and voltage transformers and directly from auxiliary board and DC board – directly to the RP & SA controllers or instrument transducers.

Measurement error of electrical parameters for the whole measurement channel should not exceed 1% for CT and VT accuracy better than 0.5% in the range 10…120% of the nominal value of measurement.

Signals from detectors of equipment process (non-electrical) parameters (temperature, pressure, etc.) are acceptable to insert with the use of DC (voltage) unified analogue signals).

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