Dividing line of switch protection controller  OEM/ODM with ordinary LCD controller

1 watchdog boundary protection can distinguish fault is within or outside the boundary separating from users

Can greatly improve the power supply reliability of the user, to avoid the other fault users affects the normal power supply

 

2 the built-in ultracapacitors, even after the superior substation break-brake, after delay fault decision limits, can still break-brake time, increase the reliability of the switching action

 

3 dial the code type protection setting value, can be in the case of no electricity protection setting intuitively set, all the fixed value at a glance, comprehensive visual!!!!!

       VS  

Intelligent machines, handheld data can be within the scope of the boundary controller of 30 meters, view the current switch, voltage state, the protection setting value,

 

And ordinary LCD protection controller is required  to climb the column  so can view the data, require multiple protection setting operation to read!
 

line circuit breaker fault handling

	System earth 系统接地方式	fault protection treatment 故障点保护处理
The single-phase grounding fault	Non-ground neutral system user limits 中性点不接地系统用户界内	single-phase earth fault judgement for permanent ground immediately after trip 判定为永久接地后立即跳闸
	Neutral point via arc suppression coil grounding user limits 中性点经消弧线圈接地用户界内
	Neutral point via small resistance grounding user limits 中性点经小电阻接地用户界内	Before the substation tripping protection action 先于变电站保护动作跳闸
	Non-ground system users  out 中性点不接地系统用户界外	not action 不动作
	Neutral point via arc suppression coil grounded out by the user 中性点经消弧线圈接地用户界外
	Neutral point via small resistance grounding out by the user 中性点经小电阻接地用户界外
Interphase short circuit fault	User limits brake fault 用户界内故障	line circuit breaker off 分界断路器分闸
	The user out fault 用户界外故障	not action 不动作

 

 

Seven, control and protection devices

In order to obtain excellent protection performance, product adopted the NKR - 02 type controller. Users can be in situ for points on the controller parameter setting, closing operation, also can use the PDA to the controller parameter setting, refer to, by closing operation and protection setting refer to various events recorded, or by specifying a cell phone in the form of text messages instead of PDA. In addition, you can use simple wireless remote control and close operation of circuit breaker.

NKZW20F - 12 / T630 - type 16 boundary between outdoor ac high voltage circuit breaker control and protection systems as shown in figure 7. The power management background machine for the user should bring along their own equipment. If not, does not affect the use of dividing line circuit breaker.

Simple wireless remote control for the effective control of radius of 30 meters, and can only carry on the circuit breaker points, closing operation. Simple wireless remote control for special. Special simple wireless remote control and the controller is one to one, its advantage is when a boundary between a circuit breaker operation, won't cause other separation circuit breaker points, by mistake. Figure 7 for the control of protection system of physical figure. From figure 7, you can see that person and NKR - 02 type controller, the interface between the PDA or mobile phone short message way may be used. These two approaches. PDA method has the advantage that you can easily control, but its effective service radius of 30 meters, use mobile phone text messages and controller interface, as long as the dividing line circuit breaker with the personnel of the communication signal is good, for there is no limit to the distance, but the dividing line circuit breaker installation site communication signals must be good. And we have to pay for mobile phone short message service. Users must be comprehensive consideration, and then choose any kind of interface.

7.1 the controller

7.1.1 disk

The bottom of the controller is the disk, as shown in figure 8.

 

 

 

7.1.2 setting window

After setting window open, that is, visible setting window pane.

 

 

 

7.1.3 controller fixed value setting

Users can by dividing line circuit breaker control device setting window to fixed value setting below:

And over-current protection setting value, the delay time; Interphase short circuit quick break protection fixed value; Zero sequence protection setting (single-phase grounding current and zero sequence protection delay time; Overlap, reclosing time.

 

 

 

7.1.3.1 zero sequence current setting value size: related to the parameters of the lateral line dividing line circuit breaker load (line length, overhead lines and cable line), can choose according to the following table:

Zero sequence protection fixed value setting principle recommended list

 

Switch the load side length of overhead lines开关负荷侧架空线长度(m)	＜1000	＜4000
Lateral load switch cable length 开关负荷侧电缆长度(m)		50	100	150	200	250	300	350	400	450
Constant value定值(A)	0.2	0.4	0.6	0.8	1.0	1.2	1.4	1.6	1.8	2.0
Lateral load switch cable length 开关负荷侧电缆长度(m)	480	500	550	600	650	700	750	800	850	900
Constant value定值(A)	2.2	2.4	2.6	2.8	3.0	3.2	3.4	3.6	3.8	4.0

 

 

If you don't use the recommended value in the table, the user can also adopt the following calculation formula of zero sequence current setting value is calculated.

Fixed value calculation formula

 

Recommend 7.1.3.2 zero sequence protection delay time constant value principle

Neutral point grounding system, or by the arc suppression coil grounding whole as the 60 s, neutral point by the low resistance grounding for 30 s. Also can be set according to the actual circumstance of circuit system.

Recommended: according to the operation experience of zero sequence current protection setting value 4 a file 20, zero sequence protection delay constant value 600 s' 29

 

7.1.4 fixed value table

Setting window open, can see on the fixed value window cover with a fixed value table and controller display definition table. The set values for the fixed value table clearly show value corresponds to dial the code switch to the actual setting value. By changing the setting value dial the code switch, can be set or modified flow current setting value, quick break current setting value, the flow time delay time, zero sequence current protection setting value and zero sequence protection time and number of coincidence and overlap time protection setting value. Regardless of whether or not there is electricity controller, can change the dial the code switch value, to set or modify the setting value. If the dial the code switch setting is equal to the largest dial code gear of fixed value table, controller will be effected according to the maximum value gear. If you want to setting value is greater than the set value table, please contact the manufacturer.

 

NKR - 02 watchdog dividing line circuit breaker controller dial the code setting value table

code 拨码	quick  break 速断二次A	over load secondary current 过流二次A	over load time 过流时间S	zero current(primary side current) 零序一次A	zero current time零序时间S	reclose times重合次数	reclosing time重合时间S
00	退出	退出	0.0	退出	0.0	退出	0.3
01	2.0	0.8	0.2	0．2A	0．2s	1次	0.5
02	2.5	1.5	0.4	0．4A	0．4s	2次	1
03	3.0	2.0	0.6	0．6A	0．6s	3次	2
04	3.5	2.5	0.8	0．8A	0．8s	3次	3
05	4.0	3.0	1.0	1．0A	1．0s	3次	4
06	4.5	3.5	1.2	1．2A	1．2s	3次	5
07	5.0	4.0	1.4	1．4A	1．4s	3次	6
08	5.5	4.5	1.6	1．6A	1．6s	3次	7
09	6.0	5.0	1.8	1．8A	1．8s	3次	10
10	6.5	5.5	2.0	2．0A	2s
11	7.0	6.0	2.2	2．5A	3s
12	7.5	6.5	2.4	3．0A	4s
13	8.0	7.0	2.6	3．5A	5s
14	8.5	7.5	2.8	4．0A	6s
15	9.0	8.0	3.0	4．5A	7s
16	9.5	8.5	3.2	5．0A	8s
17	10	9.0	3.4	5．5A	9s
18	11	9.5	3.6	6．0A	10s
19	12	10	3.8	6．5A	15s
20	13	10.5	4.0	7．0A	20s
21	14	11	4.2	8．0A	30s
22	15	11.5	4.4	9．0A	40s
23	16	12	4.6	10 A	50s
24	17	12.5	4.8	11 A	60s
25	18	13	5.0	12 A	120s
26	19	14		13 A	240s
27	20	15		14 A	360s
28	21	16		15 A	480s
29	22	17		20 A	600s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  7.2 handheld computers

PDA or PDA with data query, query, modify, setting value, remote operation, state of query, modify password pair, background processing and equipment, and other functions.

 

 

To the operation of the controller can also be done through high-end wireless handheld PDA, palmtop, USES the high-grade CPU, built-in real-time multitasking system. Display intuitive, easy to learn. Palmtop has the protection function.

On/off

1 press the switch on/off button, PDA start self-checking, 0.5 seconds later, boot self-checking. Appeared after the boot screen, as shown.

2 in normal operation, press the switch on/off the phone, can turn it off;

3 in the normal operation, if the user does not have more than 20 minutes for any keyboard operation, will automatically be turned off.

[backlight key]

Where the environment is dark when using, can press the key, open the backlight, press [backlight key] again, backlit shut down. PDA initialization complete, first asks the user to enter the password, the password to factory default set to 12345, after the user lose the password, it will directly to the main menu.

 

7.3 PDA features introduced search equipment after entering the main menu, the user should first click on the menu] [search equipment, can be found near the remote control device, and returns the device number, equipment if the search is less than, perhaps because too far away, or point of view is wrong, the user can search again after the move distance, if there are more than two devices at the same time, near requires the user to use] [manual input, to enter the corresponding number. The device number range is: 1-65000. (switch device number is consistent with the small remote control number).

[query record] when switch or circuit events, dividing line switch controller can record up to 30 recent events recorded, and can record in memory, records can be saved 10 years, the use of [query record] can query the controller inside the event log, the record number is 0, said recent events, record number is 1, said the events of the last record of 2, said to the last event and so on. When the record is full, and when a new event, is the oldest one record will be overwritten. When check records, if this record needs to be saved, the user can press the [save] key and save it, returning home by background processing function, will save the records to the computer for processing.

A typical event record format, for example, as follows:

 

 

 

[control]

After entering/remote control, screen display:

 

[remote break-brake] : brake switch points

Closing/remote control switch: switch

/ change the password, you can modify the palm computer boot password, enter/change the password after the first asks the user to input the five new password, enter your new password request again, if two input correctly, then change the password is successful, the new password can be used.

[use] simple introduce the basic operation flow of the PDA, users in the use of palmtop, can refer to the instructions.

[device reset] when circuit failure occurs, the controller on the pillars of fault indicator will light up, when the line back to normal, requires the user to manually switch to] [manual reset handle position, the malfunction indicator lamp can be reset, the handheld device reset function, can also be distant fault indicator light will be reset.

[modified fixed value] after entering modified fixed value, PDA display the following picture:

 

/ modify the fixed value, the first [reads] fixed value, the existing fixed value of [reads] to based on modified [reads] constant value at the end of can't modify directly.

Send [] : send modified fixed value to divide switch controller, if the modification is successful, PDA will return tips, but if there is no success, PDA will also prompt the user.

Meditation, which need to modify the value, can be directly meet the point.

"Equipment serial number" the serial number of the controller, range: 1-65000.

"Zero sequence CT changes than" switch inside the boundary between zero sequence CT changes than wear heart, factory has prepared the user does not have to change, otherwise it will affect the zero sequence protection.

"Quick break protection current fixed value when the line current exceeds the set value, the switch action immediately, isolate the fault zone.

"Over-current protection current fixed value when the line current exceeds the set value and achieve over-current protection delay time, the switch action isolation fault zone.

A "zero sequence current setting value" when the line more than fixed value of zero sequence current and zero sequence protection delay time, switching isolation fault zone.

"Exit dial code fixed value" when the setting value is 0, above dial the code switch controller panel set up effective, the user can't through the PDA is modified; When the set value is 1, above dial the code switch controller panel setting, all the fixed value can only be set by PDA.

"LCD adjustment" when the temperature changes, the liquid crystal display (LCD) may be lighter or darker, the user can be adjusted through the menu, so you can see the LCD.

"Reclosing retreat" 0-1 - exit reclosing in reclosing state [query] after entering state [query], screen display:

 

[return]

"Second Ia, Ic" said: after transformer, input to the controller of the secondary current.

"Io" : it means the data is a side of zero sequence current switch.

"Secondary Uab" : it means the voltage transformer secondary side voltage.

Background processing is used to processing preserved in palmtop, in the event log. In the main menu [background processing], screen display the following three functions:

 

 

 

[view]

View is saved in the palmtop, in the event log

/ delete data will be stored in the event of palmtop, record all deleted

/ upload data will be stored in the palmtop, in the event log on the cable to the desktop computer, so that the user further processing.

Upload the data, the first to use the data will be connected to the serial port of the PDA and desktop computer, and then click computer [to] - [all programs] - [attachment] - [communications] - [super terminal], and then click [properties], the baud rate is set to: 9600 stop bit: one data bits: 8 bits of data flow control: OFF/ON, and then open the serial port, then click ON PDA "upload data" button above, it can be stored in the event of palmtop revelation to the desktop computer. Super terminal Settings, close the Windows.

Pair] [equipment used to check the function division of switch controller system time to the event log when the time is accurate.

Input time format: year - month - day: points: seconds after input the correct time, press the send button, complete the pair. No data returned for fashion. After the pair, the user can by pressing [reads] key to check whether the pair is correct, if not correct, need to operate for fashion.

Operational considerations:

1, wireless PDA to should take put down gently, when used in the process of using or carrying, be careful be affected with damp be affected with damp and collision, avoid damaged antenna.

2, watch the rain.

3, in the process of operation, unstable if there is a screen or some screen, or deviate from the very serious, please restart after shutdown. Note: the user if you don't do anything more than 20 minutes, PDA will automatically power off.

 

7.4 mobile phone short message interface (the machine without this feature)

7.4.1 SMS communication services

Short message service is one of the GSM system provides GSM terminal (mobile phone), through a service center for text information transceiver application services, including service center to complete the information store and forward capability. And because the GSM network has realized the networking and roaming across the country, has the characteristics of network capacity. Users need other networking, at the same time greatly improve network coverage for clients to save the expensive cost and maintenance cost, to overcome the traditional private network communication system of large investment cost, high maintenance, network monitoring coverage is narrow and limited number of users to some defects. Compared with traditional cluster system, GSM network in wireless network coverage has incomparable advantage, combined with the GSM itself have a two-way data transfer function, makes the application rapidly. Therefore, our company developed a controller which has the function of GSM SMS communication fault detection. The controller can edit commands in the form of text messages, you can easily to parameter setting, remote control switch points, such as query, query the event log switch states. And the controller can also be through the way of SMS communication and power management center backstage machine to join.

7.4.2 SMS code

Using a mobile phone short message to controller parameter setting, refer to, by closing operation and protection setting refer to various events recorded, downward instructions must be controller can identify the code of instructions. Controller can query answering phone, its upward reply, also only is a simple, code information. So the way of using mobile phones, short message code. NKR - 02 rent information between controller and mobile code as shown in the table "NKR - 02 type controller SMS code table"

7.4.3 the matters needing attention when using SMS code

1, write SMS command, must be in English uppercase and lowercase format in Chinese pinyin or English format, SMS command is invalid.

2 for seconds, zero sequence protection action time unit, other time limit of protection operation units in milliseconds.

3, down the fixed value of zero sequence current instruction, the number of input must be an integer, which represents the current one over ten of the integer.

4, with short message communication between controller and, using the mobile phone must be into the China mobile network.

5, a query set value displayed when a quick break and a current value, modify the quick break and a fixed value when the input current setting value, is a current value.