知曉3BHE026866R0101 UAD154A控制器在勵磁系統中的使用

拾取定時(shí)器：這些定時(shí)器加載步驟1（4）拾取延遲設定值滿(mǎn)足所需條件時(shí)的設置。計時(shí)器開(kāi)始顯示步驟1在左側，步驟4在右側結束。

?禁用定時(shí)器：這些定時(shí)器加載步驟1（4）禁用時(shí)間設定點(diǎn)滿(mǎn)足所需條件時(shí)的設置。計時(shí)器開(kāi)始顯示步驟1在左側，步驟4在右側結束。

?系統穩定定時(shí)器：該定時(shí)器持續加載系統穩定時(shí)間設定點(diǎn)設置，只有在系統變得穩定。

低電壓檢測定時(shí)器：該定時(shí)器加載低電壓檢測延遲檢測到低電壓時(shí)的設定點(diǎn)設置，并將開(kāi)始向下計數至0。

步驟通電所需的條件步驟1通電需要以下條件。相同條件適用于步驟2至4。

?三相電壓大于低電壓電平設置。

?系統kVAR等于或超過(guò)步驟1拾取中的設置設定點(diǎn)。

?編程系統穩定時(shí)間已過(guò)。

?編程步驟1拾取延遲已過(guò)。

?步驟1具有步驟優(yōu)先級設定點(diǎn)或所有其他步驟中設置的最高優(yōu)先級不滿(mǎn)足上述所有條件。

A、 1.5 Modbus內存映射的添加以下兩個(gè)部分被添加到Mod 506的Modbus內存映射中有關(guān)Modbus的其他信息，請參閱7.4:DNP 3.0通信本說(shuō)明書(shū)提供了有關(guān)DECS-100數字系統操作和安裝的信息

勵磁控制系統。為此，提供以下信息：?一般信息和規范?控制和指標?功能描述?安裝

?維護和故障排除：在啟用手動(dòng)模式之前，必須評估手動(dòng)模式勵磁水平

特色如果勵磁電流水平不適合發(fā)電機，嚴重可能會(huì )損壞發(fā)電機。

不正確的PID編號將導致系統性能差或系統損壞。

當為編程目的使用操作電源時(shí)，請遵守第4節“安裝和初步設置”中規定的預防措施。

在發(fā)電機不旋轉的情況下對DECS-100進(jìn)行編程時(shí)應拆除DECS-100端子F+和F-的連接。

在上傳設置文件之前，從DECS-100移除操作電源，從端子F+和F-斷開(kāi)現場(chǎng)接線(xiàn)，并重新應用操作DECS-100的電源。

PICKUP TIMERS: These timers are loaded with the STEP 1(4) PICKUP DELAY setpoint

settings when the required conditions are met. The timers are displayed beginning

with STEP 1 on the left and ending with STEP 4 on the right.

? DISABLE TIMERS: These timers are loaded with the STEP 1(4) DISABLE TIME setpoint

settings when the required conditions are met. The timers are displayed beginning

with STEP 1 on the left and ending with STEP 4 on the right.

? SYSTEM STABILIZATION TIMER: This timer is continuously loaded with the SYSTEM

STABILIZATION TIME setpoint setting and will only start to count down to 0 when the

system becomes stable.

? LOW VOLTAGE DETECT TIMER: This timer is loaded with the LOW VOLTAGE DETECT DELAY

setpoint setting when low voltage is detected and will start to count down to 0.

Conditions Required to Energize a STEP

The following conditions are required to energize STEP 1. The same conditions apply to

STEPS 2 through 4.

? Three-phase voltage is greater than the LOW VOLTAGE LEVEL setting.

? The system kvars are equal to or have exceeded the setting in STEP 1 PICKUP

setpoint.

? The programmed SYSTEM STABILIZATION TIME has elapsed.

? The programmed STEP 1 PICKUP DELAY has elapsed.

? STEP 1 has the highest priority as set in the STEP PRIORITY setpoint or all other STEPS

do not meet all of the above conditions.

A.1.5 Additions to Modbus Memory Map

The following two sections are added to the Modbus Memory Map for Mod 506. For

additional information on Modbus, refer to 7.4: DNP 3.0 Communications

This instruction manual provides information about the operation and installation of the DECS-100 Digital

Excitation Control System. To accomplish this, the following information is provided:

? General Information and Specifications

? Controls and Indicators

? Functional Description

? Installation

? Maintenance and Troubleshooting The Manual mode excitation level must be evaluated prior to enabling this

feature. If the level of excitation current is inappropriate for the generator, severe

damage to the generator may occur.

Improper PID numbers will result in poor system performance or system damage.

When applying operating power for programming purposes, observe the

precautions called out in Section 4, Installation, Preliminary Setup.

When programming the DECS-100 without the generator spinning, the

connections to DECS-100 terminals F+ and F– should be removed.

Before uploading a settings file, remove operating power from the DECS-100,

disconnect the field wiring from terminals F+ and F–, and re-apply operating

power to the DECS-100.