SU1529332A1 - Device for starting parallel-connected arresters - Google Patents

Abstract

The invention relates to high-voltage impulse technology. The aim of the invention is to increase the triggering time of switching gaps — this is achieved due to the independence of the circuits of the triggering gating circuits from the main glittering circuits, as well as through the use of resonant reloading of capacitors to obtain control voltage pulses with a steep front. 1 il.

Description

The invention relates to high-voltage impulse technology and can be used to start a multitude of parallel-connected arresters switching capacitor banks to a load.

The aim of the invention is to synchronize start-up of switching npix. By increasing the reliability of their operation.

The drawing shows a circuit diagram of a device for starting parallel-connected arresters.

The device contains dischargers 1, switching storage capacitors 2 to a common load 3. Each of the switching dischargers 1 is provided with an insulated start gap 4, which is connected to a series circuit with a starting capacitor 5 and connected in parallel to the common contours with a first auxiliary spark gap 6 and a current-limiting choke 7. The gap 6 is shunted by a chain of the second auxiliary spark gap 8 and the starting capacitor 9, which are connected in parallel with A chain of series-connected first resonant droplets 10, a third auxiliary spark gap 11 and an additional start capacitor 12. The latter is shunted by series-connected start sparks 13 and second resonant choke 14. Cumulative co-ordinators 2, starting capacitors 5 and starting capacitors 9 and 12 are connected through charging resistors 15 to power supplies (not shown).

The device works as follows.

The starting capacitors 5 and the starting capacitors 9 and 12 are charged from the power source to the voltage DO. On the starting gaps 4 commute (L

 The discharge voltage is 1 across the Vits voltage Kp, not resulting in their breakdown. Upon reaching the starting capacitor

2 voltages U breaks the isopropagment gap 13 and the capacitor 12 resonantly recharges — I to the voltage — I. On the auxiliary spark gap 11, a potential difference of 2Uo arises, which breaks through this gap. The capacitor 12 through the choke 10 is discharged to the capacitor 9, the charged voltage of the h-io. When this happened, the resonant recharging of capacitor 9 took place, and since the capacitance of capacitor 12 was chosen to be much larger than capacitor 9, then at a potential difference between the like terminals of capacitors 12 and 9 is equal to 2 Uo, the capacitor 9 will be charged before the voltage and, -Uj (4K- 1), where K C, 2 / / (Cj, + Cj) ,, Cj and C, are the capacities of the capacitors 9 and 12); at K 0.9, Uj -2.6 Ue.

This voltage pierces the spark gap 8, after which the starting gaps of 4 spark emitters 1 produce a voltage 3, bi, drive 11 (it can break down these gaps in less time

1 NS.

The spark gap is set up in such a way that it triggers for less than 0.1 µs and short-circuits the choke 7, increases the power of the spark in the starting gaps 4, facilitates reliable operation of the switching dischargers 1 and closure of the discharge current of the storage capacitors 2 load 3,

Claims (1)

The laboratory tests of this device showed the synchronous operation of the switching arresters even with a low voltage of the power source. In addition, the device is less sensitive to some variation in the length of the starting clearances, which is important for interp reliable operation. The invention has a device for starting parallel-connected arresters, switching individual storage capacitors to a common load, containing starting capacitors, a starting spark gap, a starting capacitor, and two power sources connected via charging resistors, respectively, to storage capacitors and to the starting capacitor from that, in order to increase the synchronization of the launch of the switching arrays, it is equipped with three auxiliary spark gaps and additional each of these switching arresters is supplied with a starting spark gap, which is connected to a series circuit with a corresponding starting capacitor and with a parallel auxiliary spark gap common for all circuits and an additional current limiting choke, in addition, the first auxiliary spark connected the gap is shunted by a chain of the second auxiliary spark gap and the trigger a capacitor, in parallel with which, a circuit consisting of a series-connected additionally-inserted first resonant throttle, a third auxiliary spark gap, and said additional start-up capacitor, which is shunted by series-connected starting spark gaps and an additionally introduced second resonant choke, and an additional starting capacitor and starting capacitors are connected through the additionally inserted resistors to the appropriate power source. 1S Compiler A.Gomzin Editor M.Lazorenko Tehred L.Serdyukova, Proofreader S.Shekmar Order 7752/50 Circulation 616 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription