Электротехника \ Электроснабжение

Construction of substation 220 kV Lafarge. Volume 2. Relay protection and automation, страница 14

-  for sectionalizing switch – overcurrent protection of an input cabinet.

Valve arc protection should have an alarm of valve operating. If a valve has misoperation, then (after 1 sec.) operating of a valve should be turned to switching off the circuit breaker.


ANNEXES


Annex А

(obligatory)

Supposed composition of microprocessor-based relay protection devices mounted at the substations 220 and 35 kV Lafarge


Table А.1

№

Name of the protected element

Using function of protection or automatics

ANSI  code

Manufacturer of protection or automatics device (cabinet) and its type

ABB

Areva

General Electric

Siemens

NPP «EKRA»

1

2

3

4

5

6

7

8

9

1

Transformer

220/35/6,6 kV

63 MV∙A

Т1,Т2

Differential protection with deceleration

87Т

RET670RU2*

Р633***

Т60*

7UT633**

ШЭ2607 041*

Differential zero-sequence current protection

87N

-

Gas protection of the transformer and OLTC

63

ШЭ2607 041*

OLTC contactor protection

–

Overload current protection on the MV (LV) sides of the transformer

50 (50 1ph)

Overcurrent protection on the HV side of the transformer

51

Р143***

F650*

7SJ64x**

Overcurrent protection on the  MV (LV) sides of the transformer

50,51

Р143***

F650*

7UT633**

ШЭ2607 043*

Earth-faults alarm on the  MV (LV) sides of the transformer

59N

Functional control of the voltage transformers  on the  MV (LV) sides of the transformer

27 (59)

Voltage control

27 (59)

Current control on the HV side of the transformer

50,51

Table А.1 continuation

№

Name of the protected element

Using function of protection or automatics

ANSI

code

Manufacturer of protection or automatics device (cabinet) and its type

ABB

Areva

General Electric

Siemens

NPP «EKRA»

1

2

3

4

5

6

7

8

9

Automatic regulation of transformation ratio

90

REU615RU

***

KVGC202

***

ШЭ2607 157*

Breaking failure protection 220 kV

50BF

REC670RU*

Р143***

C60*

6MD66**

ШЭ2607 019*

Number of devices per one transformer

RET670RU2 = 1

REU615RU = 1

REC670RU = 1

Р633 = 1

Р143 = 3

KVGC202 = 1

Т60 = 1

F650 = 2

C60 = 1

7UT633 = 1

7SJ64x = 1

6MD66 = 1

ШЭ2607 041 = 1

ШЭ2607 043 = 2

ШЭ2607 157 = 1

ШЭ2607 019 = 1

2

Switchgear 35 kV

Overcurrent protection

50

SPAC8xx****

Р143***

(P141)***

F35*

7SJ64x**

БЭ2502*

Zero-sequence current protection

51N

Overload protection

50/51

Breaking failure protection

50BF

Number of devices per feeder 35 kV

SPAC8xx = 1

Р143(P141) = 1

F35 = 1

7SJ64x = 1

БЭ2502 = 1

     *    The devices are approved by the conclusion of certifying commission for use at facilities of ОАО « UES FGC ».

   **   The devices are approved for participation in tender procedures conducted for the needs of OAO "UES FGC» (ОАО «UES FGC » letter № ЛМ-2550 from 17/07/09).

***   Devices, which, at the time of the project developing, are on certification process at OAO "UES FGC".

****  Devices, which, at the time of the project developing, are in the process of certification renewal.
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