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Home Page > Solutions > Low voltage dynamic reactive compensation solution

Introduction to the scheme

The low voltage dynamic power factor correction solution is mainly achieved by BGMD-TSC dynamic filter compensation components, which is composed of the thyristor switch, harmonic adjustment reactor and power capacitor. The reactance ratio of the harmonic adjustment reactor is optional between 5% and 14% and the controller is selected from BGMD-FR12 or BGMD-FR18 series.

The filter compensation components can be classified into those with reactance ratio 7% and 14% according to the system characteristics and compensation requirements.

TSC filter compensation component series with the reactance ratio of 7% and tuning frequency of 189Hz can effectively suppress the harmonic pollutions for 5 times and above while providing reliable reactive compensation.

TSC filter compensation component series with the reactance ratio of 14% and tuning frequency of 134Hz can effectively suppress the harmonic pollutions for 3 times and above while providing reliable reactive compensation.

Application domain

Application scenarios

In this solution, thyristor silicon-controlled switch is mainly used as the switching component. The solution, with the zero switch principle and without impact or surge in switching, applies to the power distribution system with large load fluctuations as well as the power distribution systems for centralized compensation, on-site compensation, box transformer substation compensation and rural power network renovation.

Compensation effect

The stable and reliable compensation system can meet the reactive compensation requirements in dynamic conditions. Due to the use of thyristor module without mechanical contact as the switching switch, there is no surge or impact at the moment of switching.

Related case

Scheme selection如需更详细技术资料，请致电021-62603561

● Model selection table of BGMD-TSC three-phase dynamic filter compensation components (silicon-controlled switch + reactor + capacitor)

System voltage 400V, reactance ratio 7%, tuning frequency 189Hz, suppression of harmonics for 5 times and 7 times; capacitor rated voltage UN=480V;

SCR dynamic switching applies to the power supply system with frequently changing load, such as welding equipment;

Transformer capacity KVA	Recommended compensation capacity (kvar)	Component model	Group mode	Minimum cabinet size
200 KVA	75 KVAR	BGMD-TSC7-S-75/3-400V	25KVAR*3	8008002200
315 KVA	100 KVAR	BGMD-TSC7-S-100/4-400V	25KVAR*4	8008002200
400 KVA	125 KVAR	BGMD-TSC7-S-125/3-400V	25KVAR+50KVAR*2	8008002200
500 KVA	175 KVAR	BGMD-TSC7-S-175/4-400V	25KVAR+50KVAR*3	8008002200
630 KVA	200 KVAR	BGMD-TSC7-S-200/5-400V	25KVAR2+50KVAR3	8008002200
800 KVA	250 KVAR	BGMD-TSC7-S-250/6-400V	25KVAR2+50KVAR4	8008002200
1000 KVA	350 KVAR	BGMD-TSC7-S-350/5-400V	25KVAR2+50KVAR6	10008002200
1250 KVA	200 KVAR * 2	BGMD-TSC7-S-200/5-400V * 2	50KVAR*8	8008002200
1600 KVA	250 KVAR * 2	BGMD-TSC7-S-250/5-400V * 2	50KVAR*10	8008002200
2000 KVA	350 KVAR * 2	BGMD-TSC7-S-350/7-400V * 2	50KVAR*14	10008002200
2500 KVA	300 KVAR * 3	BGMD-TSC7-S-300/6-400V * 3	50KVAR*18	10008002200

System voltage 400V, reactance ratio 14%, tuning frequency 134Hz, suppression of harmonics for 3 times; capacitor rated voltage UN=525V;

SCR dynamic switching applies to the power supply system with frequently changing load, such as welding equipment;

Transformer capacity KVA	Recommended compensation capacity (kvar)	Component model	Group mode	Minimum cabinet size
200 KVA	75 KVAR	BGMD-TSC14-S-75/3-400V	25KVAR*3	8008002200
315 KVA	100 KVAR	BGMD-TSC14-S-100/4-400V	25KVAR*4	8008002200
400 KVA	125 KVAR	BGMD-TSC14-S-125/3-400V	25KVAR+50KVAR*2	8008002200
500 KVA	175 KVAR	BGMD-TSC14-S-175/4-400V	25KVAR+50KVAR*3	8008002200
630 KVA	200 KVAR	BGMD-TSC14-S-200/5-400V	25KVAR2+50KVAR3	8008002200
800 KVA	250 KVAR	BGMD-TSC14-S-250/6-400V	25KVAR2+50KVAR4	8008002200
1000 KVA	350 KVAR	BGMD-TSC14-S-350/5-400V	25KVAR2+50KVAR6	10008002200
1250 KVA	200 KVAR * 2	BGMD-TSC14-S-200/5-400V * 2	50KVAR*8	8008002200
1600 KVA	250 KVAR * 2	BGMD-TSC14-S-250/5-400V * 2	50KVAR*10	8008002200
2000 KVA	350 KVAR * 2	BGMD-TSC14-S-350/7-400V * 2	50KVAR*14	10008002200
2500 KVA	300 KVAR * 3	BGMD-TSC14-S-300/6-400V * 3	50KVAR*18	10008002200

Model selection table of BGMD-TSC single-phase dynamic filter compensation components (SCR + reactor + capacitor)

System voltage 400V, reactance ratio 14%, tuning frequency 134Hz, suppression of harmonics for 3 times; capacitor rated voltage UN=525V;

Output capacity KVAR	Reactor model	Group mode	Remark
15 KVAR	BGMD-TSC14-D-15/3-400V	5KVAR*3	Phase-splitting compensation capacity (KVAR) = total compensation capacity of transformer (KVAR)*(30%~40%)
30 KVAR	BGMD-TSC14-D-30/3-400V	10KVAR*3
45 KVAR	BGMD-TSC14-D-45/3-400V	15KVAR*3
60 KVAR	BGMD-TSC14-D-60/6-400V	10KVAR*6
75 KVAR	BGMD-TSC14-D-75/6-400V	10KVAR3+15KVAR3
90 KVAR	BGMD-TSC14-D-90/6-400V	15KVAR*6
105 KVAR	BGMD-TSC14-D-105/6-400V	10KVAR6+15KVAR3
120 KVAR	BGMD-TSC14-D-120/9-400V	10KVAR3+15KVAR6
135 KVAR	BGMD-TSC14-D-135/9-400V	15KVAR*9
150 KVAR	BGMD-TSC14-D-150/12-400V	10KVAR6+15KVAR6
165 KVAR	BGMD-TSC14-D-165/12-400V	10KVAR3+15KVAR9
180 KVAR	BGMD-TSC14-D-180/12-400V	15KVAR*12
195 KVAR	BGMD-TSC14-D-195/15-400V	10KVAR6+15KVAR9

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