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ELEMASTER IB3110250自動化系統(tǒng)
主系統(tǒng)c.t和v.t直接連接到216GW61輸入變壓器單元。測量的信號
輸入變量被逐步降低到適當?shù)乃剑怨╇娮与娐罚M信號）處理并傳輸通過系統(tǒng)電纜連接到216EA61單元，該單元將其數(shù)字化并將其發(fā)送到B448C并行總線。處理單元連續(xù)比較從主要系統(tǒng)量導出的數(shù)字化測量變量216VC62a，具有保護功能的拾取設(shè)置。如果保護功能啟動，相應的信號或跳閘命令通過B448C總線傳輸至216AB61O/P裝置。至216DB61輸入/輸出單元。將保護功能O/P處的信號和跳閘命令分配給216AB61輸出單元或216DB61 I/P信號和跳閘單元也由安裝在216VC62a處理器單元中的軟件。
216AB61單元的輸出信號（信號通道）216DB61單元（跳閘通道）控制輔助繼電器
216GA61 O/P繼電器單元或216GA62跳閘繼電器單元的K1…K16。輔助繼電器的觸點可能是自由的，并且接線端子，用于連接外部信號和跳閘電路。連接到保護的外部輸入信號通電216GE61 I/P繼電器單元中的輔助繼電器K1…K16。
這個K1…K16的潛在自由觸點傳輸外部信號
連接到216DB61單元，然后連接到B448C總線。通過適當配置216VC62a處理中的軟件單元，外部信號可分配給各種保護功能，例如用于邏輯組合（聯(lián)鎖和閉鎖）具有跳閘信號或用于激勵跳閘通道1…8。
跳閘電路1…8可通過全部或僅通過以下方式直接通電：216GE61的一些I/P通道1…10（K1…K10）通過216GA62的二極管矩陣（跳閘邏輯）（見第2.6節(jié)）。還為一些信道9…16提供了經(jīng)費
216GE61的（K9…K16）用于監(jiān)督外部跳閘電路1…8，而不是用于連接外部輸入。這是一個選項，必須在以下命令中指定：在設(shè)計保護時，應包括相應的接線。為了給電子單元供電，保護
必須連接到外部輔助直流電源（站電池）。輔助直流電源裝置216NG61、216NG62或216NG63（DC/DC轉(zhuǎn)換器）步進電站電池電壓低至24 V，并在輸入端之間提供電絕緣以及輸出電壓。24 V電源分配給各裝置
通過B448C并聯(lián)插入保護設(shè)備機架公共汽車216NG61、216NG62或216NG63電源單元
還為I/O單元上的電子電路供電。A 216MB66
設(shè)備機架可僅配備一個或兩個冗余216NG61、216NG62或216NG63輔助直流電源單元。冗余單元可以連接到同一個或兩個不同的站電池。
The primary system c.t's and v.t's are connected directly to the
216GW61 input transformer unit. The signals of the measured
input variables are stepped down to a suitable level for processing by the electronic circuits (analogue signals) and transferred
via the system cable to the 216EA61 unit, which digitises them
and transmits them to the B448C parallel bus.The digitised measured variables derived from the primary system quantities are continuously compared by the processing unit
216VC62a with the pick-up settings of the protection functions. If
a protection function picks up, the corresponding signal or tripping command is transmitted via the B448C bus to the 216AB61
O/P unit resp. to the 216DB61 I/O unit. The allocation of the signals and tripping commands at the O/P’s of the protection functions to the various channels of the 216AB61 output unit or of the
216DB61 I/P signal and tripping unit is also determined by the
software installed in the 216VC62a processor unit.
The output signals from the 216AB61 unit (signalling channels)
and 216DB61 unit (trip channels) control the auxiliary relays
K1...K16 of the 216GA61 O/P relay unit or 216GA62 tripping relay unit. The auxiliary relays' contacts are potentially-free and
wired to terminals for connection to external signalling and tripping circuits.
The external input signals connected to the protection energise
the auxiliary relays K1...K16 in the 216GE61 I/P relay unit. The
potentially-free contacts of K1...K16 transmit the external signals
to the 216DB61 unit and thence to the B448C bus. By appropriate configuration of the software in the 216VC62a processing
unit, external signals can be assigned to the various protection
functions, e.g. for logical combination (interlocking and blocking)
with trip signals or for exciting the tripping channels 1...8.
Tripping circuits 1...8 can be directly energised by all or just
some of the I/P channels 1...10 (K1...K10) of 216GE61 via the
diode matrix (tripping logic) of 216GA62 (see Section 2.6.).
Provision is also made for some of the channels 9...16
(K9...K16) of 216GE61 to be used for supervising the external
tripping circuits 1...8 instead of for the connection of external inputs. This is an option, which must be specified in the order to
enable the corresponding wiring to be included when engineering the protection.In order to supply the electronic units with power the protection
must be connected to an external auxiliary d.c. supply (station
battery). The auxiliary d.c. supply unit 216NG61, 216NG62 or
216NG63 (DC/DC converters) steps the station battery voltage
down to 24 V and provides electrical insulation between input
and output voltages. The 24 V supply is distributed to the units
inserted in the protection equipment rack via the B448C parallel
bus. The 216NG61, 216NG62 or 216NG63 power supply unit
also supplies the electronic circuits on the I/O units. A 216MB66
equipment rack can be equipped with just one or with two redundant 216NG61, 216NG62 or 216NG63 auxiliary d.c. supply units. Redundant units can be connected to the same or to two
different station batteries.
