CN104767171A - High-voltage DC circuit breaker and realization method thereof - Google Patents

High-voltage DC circuit breaker and realization method thereof Download PDF

Info

Publication number
CN104767171A
CN104767171A CN201410004805.3A CN201410004805A CN104767171A CN 104767171 A CN104767171 A CN 104767171A CN 201410004805 A CN201410004805 A CN 201410004805A CN 104767171 A CN104767171 A CN 104767171A
Authority
CN
China
Prior art keywords
current
thyristor valve
branch road
electric capacity
current transfer
Prior art date
Application number
CN201410004805.3A
Other languages
Chinese (zh)
Other versions
CN104767171B (en
Inventor
曹均正
周万迪
罗湘
魏晓光
高冲
Original Assignee
国家电网公司
国网智能电网研究院
中电普瑞电力工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国家电网公司, 国网智能电网研究院, 中电普瑞电力工程有限公司 filed Critical 国家电网公司
Priority to CN201410004805.3A priority Critical patent/CN104767171B/en
Publication of CN104767171A publication Critical patent/CN104767171A/en
Application granted granted Critical
Publication of CN104767171B publication Critical patent/CN104767171B/en

Links

Abstract

The invention relates to a circuit breaker and a realization method thereof, and particularly relates to a high-voltage DC circuit breaker and a realization method thereof. The DC circuit breaker, based on a secondary current transferring principle, comprises a main branch, a current transferring branch and an energy absorption branch in parallel connection. The DC circuit breaker is serially connected in a DC system. The main branch comprises at least one high-speed mechanical switch K and at least one current transferring module comprising a fully-controlled device in serial connection. The current transferring branch is a bridge circuit formed by thyristor valves, inductors and capacitors. The energy absorption branch is formed by a non-linear resistor. The invention also provides a high-voltage DC circuit breaker realization method. The circuit breaker provided by the invention has a simple topological structure, the control is simple and convenient, used power electronic devices are mainly half-controlled thyristors, the technology is mature, realization is easy, the current breaking ability is large, a voltage-withstanding grade is high, the extension ability is strong, and the cost is greatly reduced.

Description

A kind of high voltage DC breaker and its implementation

Technical field

The present invention relates to a kind of circuit breaker and its implementation, be specifically related to a kind of high voltage DC breaker and its implementation.

Background technology

Along with starting application based on the multiterminal flexible direct current of voltage source converter (VSC) and direct current network technology, Fast DC Circuit Breaker becomes one of key equipment ensureing system stability safe and reliable operation.In AC system, there are two natural zero-crossing points in alternating current, AC circuit breaker utilizes the natural zero-crossing point cut-off current of electric current just in one-period, and in direct current system, there is not natural zero-crossing point in direct current, therefore cut-offfing of direct current cut-offs difficulty more than alternating current.

Breaking direct current has three kinds of modes usually, a kind of is on the basis of regular alternating current mechanical chopper, by increasing auxiliary circuit, the oscillating current of superposition amplification on the direct current cut-offfing arc gap, utilize during current over-zero and cut-off circuit, utilize the mechanical type circuit breaker that this principle manufactures, break-time cannot meet the requirement of Multi-end flexible direct current transmission system; One utilizes high-powerly to turn off power electronic device, direct disjunction direct current, utilizes the solid circuit breaker that this principle manufactures, although can meet the requirement of multiterminal flexible direct current system in time, but the loss when normally is excessive, and economy is poor; Finally a kind of is the mode adopting mechanical switch and power electronic device mixing, normal operation is through-flow by mechanical switch, cutting machine tool switch during fault, utilizes the arc voltage of generation by current transfer in the power electronic device branch road be connected in parallel, then by power electronic device breaking current.Both reduced on-state loss based on this principle circuit breaker, turn improved breaking speed, but need to use a large amount of full control devices in series, technical difficulty is large, manufacturing cost is high, and when short circuit current exceedes single full control device institute energy withstand current peak value, its cost will close to double.

Summary of the invention

For the deficiencies in the prior art, the object of this invention is to provide a kind of high voltage DC breaker, another object is to provide a kind of implementation method of high voltage DC breaker, and the circuit topological structure of circuit breaker of the present invention is simple, control easy, and the power electronic device used is mainly half control device thyristor, technology maturation, be easy to realize, breaking current ability is large, withstand voltage grade is high, and extended capability is strong, reduces cost largely.

The object of the invention is to adopt following technical proposals to realize:

The invention provides a kind of high voltage DC breaker, described DC circuit breaker is based on secondary current principle of transfer, comprise main branch road in parallel, current transfer branch road and energy absorption branch road, described DC circuit breaker is connected in series in direct current system, its improvements are, at least one high speed machine K switch that described main branch road comprises series connection comprises the full current transfer module controlling device with at least one; Described current transfer branch road is bridge-type current transfer branch road; Described energy absorption is propped up route nonlinear resistor and is formed.

Further, described current transfer module adopts the full bridge structure be made up of four IGBT module and capacitor C1; Each IGBT module is by IGBT device and fly-wheel diode antiparallel with it composition.

Further, described current transfer module adopts the bridge circuit structure be made up of four diodes, capacitor C2 in parallel and IGBT module branch road, and described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it.

Further, the IGBT module that described current transfer module is connected by differential concatenation is formed, and capacitor C3 is connected in parallel on the two ends of the IGBT module branch road that differential concatenation connects; Described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it.

Further, described bridge-type current transfer branch road comprises three groups of thyristor valve tandem branch roads in parallel and LC series arm; First group of thyristor valve tandem props up thyristor valve T1 that route series aiding connection connects and thyristor valve T2 and forms;

Second group of thyristor valve tandem props up thyristor valve T5 that route series aiding connection connects and thyristor valve T6 and form, and first group contrary with thyristor valve direction contained by second group of thyristor valve branch road, and mid point is connected; First group with second group of thyristor valve branch road be connected mid point and be connected with one end of LC series arm;

3rd group of thyristor valve tandem props up thyristor valve T3 that route differential concatenation connects and thyristor valve T4 and forms, and two thyristor valve mid points are connected with the other end of LC series arm;

Described LC series arm is made up of the inductance L of connecting and electric capacity C, and electric capacity C is precharged to set point.

Further, described nonlinear resistor is lightning arrester.

The present invention is based on the implementation method of a kind of high voltage DC breaker that another object provides, its improvements are, when current transfer module adopts the full bridge structure be made up of four IGBT module and capacitor, described implementation method comprises:

One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, four IGBT device are in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road, divides equally in the branch road be composed in series by IGBT and fly-wheel diode that electric current is connected in parallel current transfer module two; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;

Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, long trigger impulse is applied to thyristor valve T1 and T2 in current transfer branch road, then four IGBT device in the main branch current shift module of locking;

2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;

3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;

4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

Further, when current transfer module adopts the bridge circuit structure be made up of four diodes, capacitor in parallel and IGBT module branch road, described implementation method comprises:

One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, IGBT device is in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;

Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, apply long trigger impulse to thyristor valve T1 and T2 in current transfer branch road, then the IGBT device in the main branch current shift module of locking;

2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;

3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;

4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

Further, when the IGBT module that current transfer module is connected by differential concatenation is formed, described implementation method comprises:

One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, two IGBT device are in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;

Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, long trigger impulse is applied to thyristor valve T1 and T2 in current transfer branch road, then two IGBT device in the main branch current shift module of locking;

2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;

3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;

4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

Compared with the prior art, the beneficial effect that the present invention reaches is:

1, when circuit breaker provided by the present invention normally runs, circulated by high speed machine switch and a small amount of power electronic device, on-state loss is little;

2, circuit breaker provided by the present invention can realize the thick-less vane of mechanical switch, can extend the useful life of switch, improves the breaking speed of switch, is easy to realize voltage-sharing when switch is connected in series; Current transfer props up route thyristor valve, electric capacity, inductance composition bridge circuit are formed, and makes under the unipolar condition of single capacitor, can two-way transfer electric current;

3, circuit breaker provided by the present invention topology institute uses and is mainly half control type power electronic device, technology maturation, is easy to realization, and greatly reduces manufacturing cost;

4, circuit breaker provided by the present invention electric capacity used only has an impact to thyristor reliable turn-off, and switch performance can not be affected, being parallel to circuit breaker two ends and being equiped with energy absorption branch road, for limiting the overvoltage that disjunction produces, greatly reducing volume and the cost of electric capacity;

5, circuit breaker provided by the present invention use thyristor to have very strong through-current capability, its breaking current ability is greatly strengthened, and does not need to adopt being connected in parallel of device;

6, circuit breaker provided by the present invention use thyristor higher voltage endurance capability, when being applied to voltage levels, all have more advantage technically and economically;

7, breaker structure provided by the present invention is novel, control is simple, and be swift in motion, withstand voltage grade is high, and is easy to extend to different voltage levels direct current electrical network, comprises traditional extra-high voltage direct-current electrical network.

Accompanying drawing explanation

Fig. 1 is the topology diagram of high voltage DC breaker provided by the invention;

Fig. 2 is the embodiment one of current transfer module provided by the invention;

Fig. 3 is the embodiment two of current transfer module provided by the invention;

Fig. 4 is the embodiment three of current transfer module provided by the invention;

Fig. 5 is the disjunction schematic diagram of the embodiment circuit breaker in a period of time of employing current transfer module provided by the invention.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

The topology diagram of high voltage DC breaker provided by the invention as shown in Figure 1, high voltage DC breaker is by port one, 2 series connection access direct current systems, include three parts, a part forms bridge-type current transfer branch road by the main branch road of at least one high speed machine switch and at least one current transfer module composition, a part by thyristor valve, inductance, electric capacity, and the energy absorption branch road be made up of nonlinear resistor.

Current transfer module adopts the full bridge structure be made up of four IGBT module and capacitor C1; Each IGBT module forms by IGBT device and fly-wheel diode antiparallel with it, as shown in Figure 2; Also can adopt the bridge circuit structure be made up of four diodes, capacitor C2 in parallel and IGBT module branch road, described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it, as shown in Figure 3; Or the IGBT module to be connected by differential concatenation is formed, capacitor C3 is connected in parallel on the two ends of the IGBT module branch road that differential concatenation connects; Described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it, as shown in Figure 4.

Bridge-type current transfer branch road comprises three groups of thyristor valve tandem branch roads in parallel and LC series arm; First group of thyristor valve tandem props up thyristor valve T1 that route series aiding connection connects and thyristor valve T2 and forms; Second group of thyristor valve tandem props up thyristor valve T5 that route series aiding connection connects and thyristor valve T6 and forms; First group contrary with thyristor valve direction contained by second group of thyristor valve branch road, and mid point is connected; First group with second group of thyristor valve branch road be connected mid point and be connected with one end of LC series arm; 3rd group of thyristor valve tandem props up thyristor valve T3 that route differential concatenation connects and thyristor valve T4 and forms, and two thyristor valve mid points are connected with the other end of LC series arm; Described LC series arm is made up of the inductance L of connecting and electric capacity C, and electric capacity C is precharged to set point by charge power supply.

The present invention also provides a kind of implementation method of high voltage DC breaker, comprising:

With the operation principle selecting the embodiment of the module of current transfer shown in Fig. 2 to set forth carried high voltage DC breaker, as shown in Figure 5.

One) when direct current system is normally run, speed-sensitive switch K closes, in current transfer module, four IGBT device are in trigger state, steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road, is divided equally in the series arm of the IGBT that steady-state current is connected in parallel current transfer module two and fly-wheel diode composition.If current transfer module can tolerate the on-state voltage drop higher than the first current transfer branch road, make that thyristor is successfully opened and self is not damaged, the smooth transfer of electric current can be made, therefore the voltage endurance capability possessed required for it is very low, a modular unit can meet the normal demand run, reduce the power electronic device number used in main branch road, the loss produced when circuit breaker is normally run is very little.At system normal operation period, by secondary power system, precharge is carried out to electric capacity in the second current transfer branch road.

Two) for one-sided short trouble, the operation principle of circuit breaker when fault is set forth.When ground short circuit fault occurs on right side system, first power supply and capacitor are isolated, then long trigger impulse is applied to thyristor valve T1, T2 in bridge circuit, then four IGBT device in the main branch current shift module of locking.Now, main branch current charges to electric capacity to by sustained diode 1, D2, because initial voltage is too low, thyristor receives trigger impulse, but still cannot open, when electric capacity both end voltage is higher than minimum forward voltage needed for trigger valve T1 and T2, valve T1, T2 will be normally open-minded, flowing through main branch current starts to valve T1, T2 transfer until zero passage, disjunction Fast mechanical switch subsequently.Maintain valve T1, T2 conducting 2ms, what make high speed machine switch produce enough tolerance system overvoltages opens distance.Now, trigger the thyristor valve T3 in bridge circuit, recharged capacitance is through inductance to valve T1 inverse injection electric current, and electric current shifts from valve T1 to valve T3, turns off when T1 electric current reduces to zero, by designing suitable parameter, ensures that valve T1 can reliable turn-off.Short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

When current transfer module adopts the bridge circuit structure be made up of four diodes, capacitor in parallel and IGBT module branch road shown in Fig. 3, described implementation method comprises:

One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, IGBT device is in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;

Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, apply long trigger impulse to thyristor valve T1 and T2 in current transfer branch road, then the IGBT device in the main branch current shift module of locking;

2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;

3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;

4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

When current transfer module is made up of the IGBT module that differential concatenation connects as shown in Figure 4, described implementation method comprises:

One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, two IGBT device are in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;

Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, long trigger impulse is applied to thyristor valve T1 and T2 in current transfer branch road, then two IGBT device in the main branch current shift module of locking;

2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;

3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;

4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.

Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.

Claims (9)

1. a high voltage DC breaker, described DC circuit breaker is based on secondary current principle of transfer, comprise main branch road in parallel, current transfer branch road and energy absorption branch road, described DC circuit breaker is connected in series in direct current system, it is characterized in that, at least one high speed machine K switch that described main branch road comprises series connection comprises the full current transfer module controlling device with at least one; Described current transfer branch road is bridge-type current transfer branch road; Described energy absorption is propped up route nonlinear resistor and is formed.
2. high voltage DC breaker as claimed in claim 1, it is characterized in that, described current transfer module adopts the full bridge structure be made up of four IGBT module and capacitor C1; Each IGBT module is by IGBT device and fly-wheel diode antiparallel with it composition.
3. high voltage DC breaker as claimed in claim 2, it is characterized in that, described current transfer module adopts the bridge circuit structure be made up of four diodes, capacitor C2 in parallel and IGBT module branch road, and described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it.
4. high voltage DC breaker as claimed in claim 2, it is characterized in that, the IGBT module that described current transfer module is connected by differential concatenation is formed, and capacitor C3 is connected in parallel on the two ends of the IGBT module branch road that differential concatenation connects; Described IGBT module is made up of IGBT device and fly-wheel diode antiparallel with it.
5. high voltage DC breaker as claimed in claim 1, is characterized in that, described bridge-type current transfer branch road comprises three groups of thyristor valve tandem branch roads in parallel and LC series arm; First group of thyristor valve tandem props up thyristor valve T1 that route series aiding connection connects and thyristor valve T2 and forms;
Second group of thyristor valve tandem props up thyristor valve T5 that route series aiding connection connects and thyristor valve T6 and form, and first group contrary with thyristor valve direction contained by second group of thyristor valve branch road, and mid point is connected; First group with second group of thyristor valve branch road be connected mid point and be connected with one end of LC series arm;
3rd group of thyristor valve tandem props up thyristor valve T3 that route differential concatenation connects and thyristor valve T4 and forms, and two groups of thyristor valve mid points are connected with the other end of LC series arm;
Described LC series arm is made up of the inductance L of connecting and electric capacity C, and electric capacity C is precharged to set point.
6. high voltage DC breaker as claimed in claim 1, it is characterized in that, described nonlinear resistor is lightning arrester.
7. an implementation method for high voltage DC breaker, is characterized in that, when current transfer module adopts the full bridge structure be made up of four IGBT module and capacitor, described implementation method comprises:
One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, four IGBT device are in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road, divides equally in the branch road be composed in series by IGBT and fly-wheel diode that electric current is connected in parallel current transfer module two; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;
Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, long trigger impulse is applied to thyristor valve T1 and T2 in current transfer branch road, then four IGBT device in the main branch current shift module of locking;
2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;
3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;
4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.
8. implementation method as claimed in claim 7, is characterized in that, when current transfer module adopts the bridge circuit structure be made up of four diodes, capacitor in parallel and IGBT module branch road, described implementation method comprises:
One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, IGBT device is in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;
Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, apply long trigger impulse to thyristor valve T1 and T2 in current transfer branch road, then the IGBT device in the main branch current shift module of locking;
2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;
3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;
4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.
9. implementation method as claimed in claim 7, it is characterized in that, when the IGBT module that current transfer module is connected by differential concatenation is formed, described implementation method comprises:
One) when direct current system is normally run, high speed machine K switch closes, and in current transfer module, two IGBT device are in trigger state; Steady-state current flows through the high speed machine K switch and current transfer module that are connected in series in main branch road; At direct current system normal operation period, the electric capacity C in current transfer branch road carries out being charged to set point;
Two) there is one-sided short trouble in direct current system: 1. when direct current system is in right of circuit breaker generation ground short circuit fault, long trigger impulse is applied to thyristor valve T1 and T2 in current transfer branch road, then two IGBT device in the main branch current shift module of locking;
2. main branch current is charged to the electric capacity C1 in current transfer module by sustained diode 1, D2, when electric capacity C1 both end voltage is higher than the minimum forward voltage triggered needed for thyristor valve T1 and T2, thyristor valve T1 and T2 will be normally open-minded, flow through main branch current to start to shift until zero passage to thyristor valve T1 and T2, disjunction high speed machine K switch subsequently;
3. maintain thyristor valve T1 and T2 conducting 2ms, ensure that high speed machine K switch produces and enough tolerate that direct current system is superpotential opens distance; Thyristor valve T3 in trigger current transfer branch road, recharged capacitance C is through inductance L to thyristor valve T1 inverse injection electric current, and electric current shifts from thyristor valve T1 to thyristor valve T3, turns off when thyristor valve T1 electric current reduces to zero;
4. short circuit current charges to electric capacity C through thyristor valve T3, electric capacity C, inductance L and thyristor valve T2, until electric capacity C polarity inversion, when its amplitude reaches lightning arrestor movement threshold value, lightning arrestor movement, current transfer is in lightning arrester, direct current system energy will consume by it absorption, described DC circuit breaker completes disjunction.
CN201410004805.3A 2014-01-06 2014-01-06 A kind of high voltage DC breaker and its implementation CN104767171B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410004805.3A CN104767171B (en) 2014-01-06 2014-01-06 A kind of high voltage DC breaker and its implementation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410004805.3A CN104767171B (en) 2014-01-06 2014-01-06 A kind of high voltage DC breaker and its implementation

Publications (2)

Publication Number Publication Date
CN104767171A true CN104767171A (en) 2015-07-08
CN104767171B CN104767171B (en) 2018-01-19

Family

ID=53648866

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410004805.3A CN104767171B (en) 2014-01-06 2014-01-06 A kind of high voltage DC breaker and its implementation

Country Status (1)

Country Link
CN (1) CN104767171B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105391024A (en) * 2015-11-09 2016-03-09 浙江大学 Current-limiting hybrid direct-current breaker
CN105655966A (en) * 2016-03-15 2016-06-08 许继电气股份有限公司 Direct current breaker
CN105790234A (en) * 2016-03-15 2016-07-20 许继电气股份有限公司 High-voltage direct-current circuit breaker
CN105870877A (en) * 2016-03-14 2016-08-17 全球能源互联网研究院 Thyristor-based passive hybrid direct current circuit breaker and application method therefor
CN106026012A (en) * 2016-06-29 2016-10-12 中国西电电气股份有限公司 Hybrid active high-voltage direct-current circuit breaker
CN106646206A (en) * 2015-10-29 2017-05-10 全球能源互联网研究院 High-voltage heavy-current compound injection DC circuit breaker synthetic test circuit and method
CN107039952A (en) * 2017-02-09 2017-08-11 上海电气集团股份有限公司 The breaker and control method of a kind of alternating current-direct current hybrid
CN107069654A (en) * 2017-05-24 2017-08-18 国家电网公司 A kind of two-way hybrid dc circuit breaker and cutoff method for middle voltage distribution networks
CN107086541A (en) * 2017-06-05 2017-08-22 国家电网公司 The hybrid circuit breaker and its cutoff method of a kind of two-way disjunction
WO2017181928A1 (en) * 2016-04-19 2017-10-26 南京南瑞继保电气有限公司 Bridge-type circuit, and direct current breaking device and control method thereof
CN107453335A (en) * 2016-05-30 2017-12-08 全球能源互联网研究院 A kind of dc circuit breaker and its control method
CN108011349A (en) * 2017-12-14 2018-05-08 周方 A kind of two-way no electric arc mixing breaker and its method of work
CN108092253A (en) * 2017-12-29 2018-05-29 东南大学 A kind of DC grid capacitive mixed DC breaker and its control method
CN108322205A (en) * 2018-02-07 2018-07-24 四川大学 A kind of bridge-type solid-state direct-current breaker and its control method
CN108390362A (en) * 2018-02-06 2018-08-10 中国西电电气股份有限公司 A kind of current diverting device and method suitable for hybrid dc circuit breaker
CN108649544A (en) * 2018-06-01 2018-10-12 重庆大学 A kind of mechanical high-voltage dc circuit breaker device and its cutoff method
CN109361202A (en) * 2018-09-27 2019-02-19 许继集团有限公司 A kind of current-injection type breaker

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102687221A (en) * 2009-11-16 2012-09-19 Abb技术有限公司 Device and method to break the current of a power transmission or distribution line and current limiting arrangement
GB2493911A (en) * 2011-08-18 2013-02-27 Univ Manchester Conduction path of direct current circuit breaker
CN103021739A (en) * 2012-11-30 2013-04-03 西安交通大学 Hybrid direct-current circuit breaker
CN103219699A (en) * 2013-02-06 2013-07-24 西安交通大学 High-voltage mixing type direct-current breaker
CN103280763A (en) * 2013-02-27 2013-09-04 国网智能电网研究院 Direct current circuit breaker and realization method thereof
CN103337829A (en) * 2013-07-04 2013-10-02 国家电网公司 Semi-controlled passive injection current high voltage direct current breaker and realization method thereof
CN103457256A (en) * 2013-08-16 2013-12-18 国家电网公司 Direct-current breaker used for multi-terminal direct-current system and control method thereof
CN103474983A (en) * 2013-08-20 2013-12-25 国家电网公司 High voltage and great current direct-current circuit breaker and control method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102687221A (en) * 2009-11-16 2012-09-19 Abb技术有限公司 Device and method to break the current of a power transmission or distribution line and current limiting arrangement
GB2493911A (en) * 2011-08-18 2013-02-27 Univ Manchester Conduction path of direct current circuit breaker
CN103021739A (en) * 2012-11-30 2013-04-03 西安交通大学 Hybrid direct-current circuit breaker
CN103219699A (en) * 2013-02-06 2013-07-24 西安交通大学 High-voltage mixing type direct-current breaker
CN103280763A (en) * 2013-02-27 2013-09-04 国网智能电网研究院 Direct current circuit breaker and realization method thereof
CN103337829A (en) * 2013-07-04 2013-10-02 国家电网公司 Semi-controlled passive injection current high voltage direct current breaker and realization method thereof
CN103457256A (en) * 2013-08-16 2013-12-18 国家电网公司 Direct-current breaker used for multi-terminal direct-current system and control method thereof
CN103474983A (en) * 2013-08-20 2013-12-25 国家电网公司 High voltage and great current direct-current circuit breaker and control method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
魏晓光等: "柔性直流输电网用新型高压直流断路器设计方案", 《电力系统自动化》 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106646206B (en) * 2015-10-29 2019-11-08 全球能源互联网研究院 The dc circuit breaker compounding testing circuit and method of the compound injection of high-voltage large current
CN106646206A (en) * 2015-10-29 2017-05-10 全球能源互联网研究院 High-voltage heavy-current compound injection DC circuit breaker synthetic test circuit and method
CN105391024A (en) * 2015-11-09 2016-03-09 浙江大学 Current-limiting hybrid direct-current breaker
CN105870877B (en) * 2016-03-14 2019-12-13 全球能源互联网研究院 passive hybrid direct current breaker based on thyristor and application method thereof
CN105870877A (en) * 2016-03-14 2016-08-17 全球能源互联网研究院 Thyristor-based passive hybrid direct current circuit breaker and application method therefor
CN105790234A (en) * 2016-03-15 2016-07-20 许继电气股份有限公司 High-voltage direct-current circuit breaker
CN105655966A (en) * 2016-03-15 2016-06-08 许继电气股份有限公司 Direct current breaker
WO2017181928A1 (en) * 2016-04-19 2017-10-26 南京南瑞继保电气有限公司 Bridge-type circuit, and direct current breaking device and control method thereof
US10454265B2 (en) 2016-04-19 2019-10-22 Nr Electric Co., Ltd Bridge-type circuit, and direct current breaking device and control method thereof
CN107453335A (en) * 2016-05-30 2017-12-08 全球能源互联网研究院 A kind of dc circuit breaker and its control method
CN106026012A (en) * 2016-06-29 2016-10-12 中国西电电气股份有限公司 Hybrid active high-voltage direct-current circuit breaker
CN107039952B (en) * 2017-02-09 2019-05-21 上海电气集团股份有限公司 A kind of breaker and control method of alternating current-direct current hybrid
CN107039952A (en) * 2017-02-09 2017-08-11 上海电气集团股份有限公司 The breaker and control method of a kind of alternating current-direct current hybrid
CN107069654A (en) * 2017-05-24 2017-08-18 国家电网公司 A kind of two-way hybrid dc circuit breaker and cutoff method for middle voltage distribution networks
CN107069654B (en) * 2017-05-24 2018-11-23 国家电网公司 A kind of two-way hybrid dc circuit breaker and cutoff method for middle voltage distribution networks
CN107086541B (en) * 2017-06-05 2020-02-07 国家电网公司 Bidirectional breaking hybrid circuit breaker and breaking method thereof
CN107086541A (en) * 2017-06-05 2017-08-22 国家电网公司 The hybrid circuit breaker and its cutoff method of a kind of two-way disjunction
CN108011349A (en) * 2017-12-14 2018-05-08 周方 A kind of two-way no electric arc mixing breaker and its method of work
CN108092253A (en) * 2017-12-29 2018-05-29 东南大学 A kind of DC grid capacitive mixed DC breaker and its control method
CN108092253B (en) * 2017-12-29 2020-02-18 东南大学 Capacitive hybrid direct-current circuit breaker for direct-current power grid and control method thereof
CN108390362A (en) * 2018-02-06 2018-08-10 中国西电电气股份有限公司 A kind of current diverting device and method suitable for hybrid dc circuit breaker
CN108322205A (en) * 2018-02-07 2018-07-24 四川大学 A kind of bridge-type solid-state direct-current breaker and its control method
CN108649544A (en) * 2018-06-01 2018-10-12 重庆大学 A kind of mechanical high-voltage dc circuit breaker device and its cutoff method
CN109361202A (en) * 2018-09-27 2019-02-19 许继集团有限公司 A kind of current-injection type breaker

Also Published As

Publication number Publication date
CN104767171B (en) 2018-01-19

Similar Documents

Publication Publication Date Title
CN104578865B (en) A kind of T-shaped fault-tolerant current transformer of three level four bridge legs and its control method
CN103618298B (en) A kind of high voltage DC breaker
CN103219738B (en) Direct current transmission system based on three-pole type structure
JP6295485B2 (en) Precharge circuit and photovoltaic inverter
CN104052026B (en) For submodule topology and the application thereof of modularization multi-level converter
CN101917133B (en) Five-electrical level inverter
CN101778513B (en) LED flow equalizing control circuit, LED driver module and navigation aiding light
CN103312144B (en) Active-control valley fill circuit and control method thereof
EP3131166B1 (en) Passive high-voltage direct-current circuit breaker and implementation method therefor
CN201077368Y (en) Electrified railroad homophase traction power supply system
CN107645154B (en) Novel combined direct current circuit breaker and application method thereof
CN202230181U (en) Power ring test apparatus for flexible DC power transmission MMC valve stable state operation test
CN104052303A (en) Undisturbed switching mechanism of voltage-stabilization electricity-saving device
CN104600758B (en) A kind of the self-energizing device and its implementation of high voltage DC breaker
CN107078509B (en) Current flow controller
CN105656019A (en) Capacitive charging DC breaker and application thereof
CN102969912A (en) Control and drive circuit and method
CN105609344B (en) A kind of hybrid direct-current breaker topology structure
CN104052307B (en) A kind of bridge type modular multi-level two-way switch electric capacity AC-AC Conversion device
CN103066809B (en) Improved residual current device (RCD) buffer circuit applied to direct tandem type insulated gate bipolar translator (IGBT)
CN107069795A (en) A kind of bipolar short-circuit current computational methods of multiterminal MMC HVDC
CN203859683U (en) Synchronous rectification drive circuit
CN101645662B (en) Inverter power supply device
CA2848325C (en) Control circuit
CN104426344B (en) Buffer circuit and the way to play for time for buffer circuit

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
CB02 Change of applicant information

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant after: State Grid Corporation of China

Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE

Applicant after: China-EPRI Electric Power Engineering Co., Ltd.

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant before: State Grid Corporation of China

Applicant before: State Grid Smart Grid Institute

Applicant before: China-EPRI Electric Power Engineering Co., Ltd.

CB02 Change of applicant information
TA01 Transfer of patent application right

Effective date of registration: 20170524

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant after: State Grid Corporation of China

Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant before: State Grid Corporation of China

Applicant before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE

Applicant before: China-EPRI Electric Power Engineering Co., Ltd.

GR01 Patent grant
GR01 Patent grant