CN105226666B - To the check method of reactive apparatus running status in transformer station's automatism voltage control - Google Patents
To the check method of reactive apparatus running status in transformer station's automatism voltage control Download PDFInfo
- Publication number
- CN105226666B CN105226666B CN201510762748.XA CN201510762748A CN105226666B CN 105226666 B CN105226666 B CN 105226666B CN 201510762748 A CN201510762748 A CN 201510762748A CN 105226666 B CN105226666 B CN 105226666B
- Authority
- CN
- China
- Prior art keywords
- capacitor
- reactor
- pressure side
- main transformer
- idle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 206010003830 Automatism Diseases 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims abstract description 106
- 238000005259 measurement Methods 0.000 claims abstract description 92
- 230000011664 signaling Effects 0.000 claims abstract description 14
- 238000012795 verification Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 15
- 238000001914 filtration Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000004040 coloring Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The present invention relates to, to the check method of reactive apparatus running status, belong to power system automatism voltage control technical field in a kind of transformer station's automatism voltage control.The method includes：Topological structure first according to current electric grid forms the control unit of transformer station；Secondly, the metric data of the reactive apparatus in control unit is checked to its running status；Uniformity first to remote measurement, the remote signalling of the capacitor, reactor of main transformer low-pressure side is checked；The idle remote measurement of capacitor, reactor then to main transformer low-pressure side and checked with the idle remote measurement uniformity of main transformer low-pressure side；If there is the automatism voltage control for checking obstructed out-of-date automatic blocking transformer station.The inventive method can quickly and accurately carry out the check of running status to transformer station's reactive apparatus in automatism voltage control, it is to avoid due to measuring the inaccurate Wrong control for causing, meet the requirement of substation equipment safe operation.
Description
Technical field
The invention belongs to power system automatism voltage control technical field, more particularly to a kind of transformer station's automatism voltage control
In to the check method of reactive apparatus running status.
Background technology
Automatism voltage control (Automatic Voltage Control, hereinafter referred to as AVC) system is to realize power grid security
(raising voltage stability margin), economical (reduction via net loss), the important means of high-quality (raising rate of qualified voltage) operation, its base
Present principles be exerted oneself by coordinating control generator reactive, load tap changer and reactive-load compensation equipment, realize idle in power network
The reasonable layout of voltage.
AVC systems mainly have load tap changer and reactive-load compensation equipment for the object of the idle control of transformer station, are
The switching that the control instruction that is issued to transformer station of system is also just divided into transfer the files instruction and the reactive-load compensation equipment of load tap changer refers to
Order, so as to change the reactive power distribution situation in transformer station, so as to also reach the purpose of voltage-regulation.
The monitoring system of transformer station, be otherwise known as SCADA system, all of metric data information being responsible in acquisition station
Collection.These measurement informations are pooled to monitoring system, and correspondence is associated with corresponding equipment, and being shown on display screen can be for
Dispatcher is monitored the ruuning situation of transformer station.Meanwhile, these metric data can also pack and be supplied to other modules to answer
For using, such as AVC this control module is accomplished by the basic data from transformer station's collection when being calculated, and its comes
Source is not directly to gather from the physical device of transformer station, but the amount of the transformer station obtained in the SCADA system for using
Survey data.These data are sent to Surveillance center from transformer station, are referred to as upstream data.In addition, because AVC is control mould
Block, just inevitable controlled function, that is, under send instructions to transformer station, this data is referred to as downlink data.Equally, AVC
Data nor be directly handed down to transformer station by link, be also to be forwarded by SCADA system.For total
It, one, the direct passage of transformer station and Surveillance center, is exactly that SCADA carries out the collection of metric data.
The basis of the control of AVC is the basic data based on power network, and the operation of power network will also follow certain operation rule
Journey.In the operating standard of reactive apparatus, capacitor and reactor to hanging over same bus are not allow input simultaneously.
This is that, because capacitor is used as capacitive reactive power generating means, and capacitor is used as the generating means of inductive reactive power, if same
Input is carried out under bus can cause the idle unreasonable flowing in transformer station, so as to cause the increase of equipment loss, increased
The cost of operation；And capacitor and put into while reactor under same bus, can also constituted in parallel humorous under certain subharmonic
The loop that shakes causes the amplification of harmonic current or the generation of resonance, so as to the damage of equipment can be caused.
Capacitor and reactor under same bus is how avoided to put into simultaneously, topmost is exactly the accurate of metric data
Property.It is the raw data (remote measurement, remote signalling) directly come up by SCADA transmission that the control module of AVC carries out the data that decision-making used,
But need a Pre-Evaluation for the credibility of these data.Filtration module exactly completes such work.Filtering
The input of module is the raw data that SCADA transmission comes up, and the output of filtration module will make a policy for controller module.Filtering mould
Block can be essentially divided into two aspects of laterally filtering and longitudinal direction filtering.Wherein laterally filter the number it is contemplated that in a section
According to, it using the mutual restriction relation that should be met between different measuring points under synchronization, to be divided the data for collecting
Analysis.In essence, this part works similar to a state estimator, except that it is not intended to be given by state
The result of estimation is how many, but will be on the basis of this result, and original SCADA data is compared, and SCADA is given birth to
Data are estimated, if there is the too big situation of error, then it is believed that this local measurement system breaks down, now
Property according to data fault decides whether to be controlled the switching of pattern, or carries out shadow shield, while providing alarm signal
Breath.
The control of AVC is calculated and controlled aiming at a data for section, therefore in order to avoid to equipment
Maloperation it is necessary to carry out the horizontal filtering of data.For AVC, reactive apparatus service data is checked to judge to lead to
Whether the metric data for crossing SCADA collections is correct, also just seems and is even more important.Connected for example under the same bus of transformer station
One group capacitor and one group of reactor, the state quantity measurement of the breaker being connected in sometime capacitor are collected to open
Capacitor idle measurement it is larger (close to equipment rated capacity), if at this moment breakers of the AVC only with capacitor
State judges the running status of capacitor, then judge that the capacitor has logged out operation.If busbar voltage is higher at that time,
AVC can put into reactor to reduce busbar voltage.It is actual it may be the case that the state quantity measurement of the connected breaker of capacitor is
Mistake, the capacitor is still in running status.So the control of AVC has resulted in capacitor and reactor puts into simultaneously, violates
Equipment operating standard.
Capacitor, the remote measure and communication mistake of reactor can cause AVC to equipment state decision error, it may appear that capacitor and
The situation that reactor puts into simultaneously, so as to not meet equipment operating standard and the damage of equipment can be caused.So this patent institute
To the check method of reactive apparatus running status in a kind of transformer station's automatism voltage control for proposing, its purpose is exactly to utilize redundancy
Measurement information the running status of reactive apparatus in transformer station is checked, when occurring abnormal, timely locking is automatically controlled,
Avoid the Wrong control situation that mishandling occurs.
It is related to the technology of formation substation control unit in transformer station's automatism voltage control in the present invention, the applicant was once
The proposition number of accepting is 201410637577.3, entitled " to generate control unit in real time based on topology coloring in automatism voltage control
Method " correlation technique, the main contents of the method include：Eliminate transformer station in Transformer Winding and all disconnections every
Pass, breaker are left, remaining structure carries out topology coloring analysis to transformer station；The connection of high, medium voltage side winding according to transformer
Topological island where end points, determines high voltage side of transformer, the logic bus of medium voltage side connection, and according to transformer and logic bus
Relation creates new control unit, or transformer is added existing control unit；According to step down side winding connection end point
The topological island at place determines the low voltage logic bus of its connection, and low voltage logic bus is added into control unit；By in station
Topological island where each reactive-load compensation equipment connection end point determines the logic bus of its connection, and reactive-load compensation equipment is added to
Control unit.Using method can quickly, substation control unit is properly formed, for the calculating of transformer station's automatism voltage control
In decision-making.
The content of the invention
The purpose of the present invention is that, to overcome the weak point of prior art, it is right in a kind of transformer station's automatism voltage control to propose
The check method of reactive apparatus running status.The method is using the real-time measurement information of transformer station's content redundancy to nothing in transformer station
The running status of work(equipment is checked, the timely locking automatism voltage control when reactive apparatus are measured occurs abnormal, so as to keep away
Exempt from the Wrong control situation that mishandling occurs.
To the check method of reactive apparatus running status in transformer station's automatism voltage control, it is characterised in that including following
Step：
1) when controlling cycle arrives, the complete topological structure of current transformer substation is obtained from grid monitoring system first, with
This control unit to form transformer station；
2) in transformer station after control unit generation, the real-time measurement data of the reactive apparatus in control unit are come to it
Running status is checked；
3) verification packet of transformer station's reactive apparatus running status contains two checks of step, and the first step is to main transformer low pressure
The uniformity of remote measurement, the remote signalling of the capacitor, reactor of side is checked, and second step is capacitor, the electricity to main transformer low-pressure side
The idle remote measurement of anti-device and checked with the idle remote measurement uniformity of main transformer low-pressure side；
4) the uniformity check to remote measurement, the remote signalling of the capacitor, reactor of main transformer low-pressure side comprises the following steps：
4.1) setting of threshold value up and down：Upper threshold value refers to distant when capacitor, reactor arrangement put under normal circumstances
Measured value and the minimum value of the ratio of equipment nominal reactive capacity, are designated as fLmt1；Lower threshold value refer under normal circumstances capacitor,
Telemetry value and the maximum of the ratio of equipment nominal reactive capacity, are designated as fLmt0 when reactor arrangement is exited；
4.2) idle remote measurement is checked：Capacitor, the rated capacity of reactor are obtained from electric network model parameter, is designated as
FQNom, unit kVar；The real-time measurement of capacitor, reactor, is designated as fQCur, and unit kVar, its absolute value is designated as fabs
(fQCur), remember that the absolute value form of following numerical value is fabs (x)；When capacitor, reactor are in running status, such as
Fruit meets condition：fabs(fQCur)<FQNom*fLmt1, then illustrate the capacitor, the remote measure and communication of reactor is not corresponded to；Work as electricity
When appearance/anti-device is in non-operating state, if meeting condition：fabs(fQCur)>FQNom*fLmt0, then illustrate the capacitor,
The remote measure and communication of reactor is not corresponded to；
4.3) telemetering of current is checked：
4.31) load current value is obtained；The rated current of electric capacity/anti-device is designated as fINom, unit A；Slave unit nameplate parameter
Middle acquisition capacitor, the nominal reactive capacity of reactor are designated as Q, and unit kVar and rated voltage are designated as U, unit kV, calculate electricity
Container, the rated current of reactor are：FINom=Q/U；
4.32) real-time measurement of capacitor, reactor current, is designated as ICur, unit A；When capacitor, reactor are in fortune
During row state, if meeting condition：fabs(ICur)<FINom*fLmt1, then illustrate the remote measure and communication of the capacitor, reactor
Do not correspond to；When capacitor, reactor are in non-operating state, if meeting condition：fabs(ICur)>FINom*fLmt0, then
Illustrate the capacitor, the remote measure and communication of reactor is not corresponded to；
4.4) in step 4.2) and idle remote measurement and the verification of telemetering of current 4.3) in, if judging true by one of which
Surely the remote measure and communication for having capacitor, reactor is not corresponded to, then the automatism voltage control of the locking transformer station, and provides alarm letter
Breath；
5) the idle remote measurement of capacitor, reactor to main transformer low-pressure side and the school of the idle remote measurement uniformity of main transformer low-pressure side
Core comprises the following steps：
5.1) setting of threshold value：Under normal circumstances the capacitor of main transformer low-pressure side, the idle remote measurement of reactor it is exhausted
To the ratio of the idle verification reference value of the absolute value and main transformer low-pressure side that take after difference of value and the idle remote measurement absolute value of main transformer low-pressure side
The maximum of value, is designated as fLmt；
5.2) the idle telemetry value of main transformer low-pressure side, directly by measuring acquisition, is designated as fTrfmVar, unit MVar；
5.3) the idle remote measurement of the capacitor of main transformer low-pressure side, reactor, by the topological relation in transformer station, finds institute
There are capacitor, the reactor arrangement being connected on the bus of this main transformer low-pressure side side, and to the reactive power measurement of these equipment
Value is added, and draws the idle telemetry value of main transformer low-pressure side capacitor, reactor, is designated as fCpVar, unit MVar；
5.4) determine verification reference value, be designated as fTrfmBase, its obtaining value method is：As fabs (fTrfmVar)>fDead
When, fTrfmBase=fabs (fTrfmVar)；As fabs (fTrfmVar)<During fDead, fTrfmBase=fDead；fDead
It is the parameter for setting, using 0.3~0.5 times of separate unit reactive apparatus capacity, unit MVar；
5.5) absolute value is checked；If meeting condition：
fabs(fabs(fTrfmVar)-fabs(fCpVar))>fLmt*fTrfmBase
Then think the idle remote measurement of the capacitor, reactor of main transformer low-pressure side and differ with the idle remote measurement of main transformer low-pressure side
Cause；
5.5) direction is checked；If fabs (fTrfmVar)>FDead, further travel direction is checked；Note capacitor sends nothing
For just during work(, main transformer low-pressure side is idle when flowing into main transformer for just；If fTrfmVar*fCpVar<0, i.e. main transformer low-pressure side are idle
Measuring value is different from electric capacity/anti-total reactive sign of device, then the capacitor of main transformer low-pressure side, the idle remote measurement of reactor and and main transformer
Low-pressure side is idle, and remote measurement is inconsistent；
5.6) by above-mentioned absolute value verification and direction verification 5.4) with 5.5) two steps, if there is a kind of situation explanation to lead
The idle remote measurement of the capacitor, reactor of low pressure side and inconsistent with the idle remote measurement of main transformer low-pressure side, then locking transformer station
Automatism voltage control, and warning information is provided, ensure that the safe operation of system and equipment；
6) go to step 1 continuation detection again when next round controlling cycle arrives and check.
The features of the present invention and beneficial effect：
The present invention is innovated for the check method in transformer station's automatism voltage control to reactive apparatus running status,
Having taken into full account may be due to the situation of maloperation caused by measurement mistake, so as to be directed in the calculating of automatism voltage control
The solution to carry out problem of property.The damage of the equipment that the maloperation of equipment causes can be avoided, also can in time remind scheduling to supervise
Control personnel modify come the measurement information to mistake so that automatism voltage control it is tactful accurate, while also ensureing electric
Net safely and efficiently runs.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Fig. 2 is the transformer station's embodiment schematic diagram based on application of the invention.
Specific embodiment
Check method in a kind of transformer station's automatism voltage control proposed by the present invention to reactive apparatus running status is combined
Accompanying drawing and a specific embodiment, become apparent from illustrating the flow of this method, and first the model to embodiment is simply described：
Without loss of generality, in the present embodiment only by taking 500kV transformer stations main transformer as an example, its structure such as Fig. 1 institutes
Show, the main transformer is designated as T1, it is a three-winding transformer, three sides connect voltage class and are followed successively by high-pressure side 500kV, medium voltage side
220kV, low-pressure side 35kV, the condenser capacity C1=60MVar that wherein T1 low-pressure sides are connect, reactor L1=40MVar, in figure
Switch mark black bars representation switch be in closure state, switch mark white square represents open mode, with low-pressure side
The capacitive reactive power flowed into high-pressure side is reference direction.
The present embodiment method is comprised the following steps：
1) when controlling cycle arrives, the complete topological structure of current transformer substation is obtained from grid monitoring system first, with
Come the control unit that forms transformer station, (method of the generation of the control unit of transformer station can use Patent No. for this
201410637577.3, described in entitled " method for generating control unit in real time based on topology coloring in automatism voltage control "
Substation control unit generation method).Controlling cycle is set to 5 minutes in this example, because this transformer station only has one
Platform main transformer, and the side of main transformer three killer switch all in closure state, according to being based on topology coloring in automatism voltage control
The method of generation control unit, can form a control unit U1 in real time.Equipment is included in U1：500kV buses, 220kV are female
Line, 35kV buses, transformer T1, reactive apparatus C1, L1.
2) in transformer station after control unit generation, the real-time measurement data of the reactive apparatus in control unit are come to it
Running status is checked；
3) verification packet of transformer station's reactive apparatus running status contains two checks of step, and the first step is to main transformer low pressure
The uniformity of remote measurement, the remote signalling of the capacitor, reactor of side is checked, and second step is capacitor, the electricity to main transformer low-pressure side
The idle remote measurement of anti-device and checked with the idle remote measurement uniformity of main transformer low-pressure side；
4) the uniformity check to remote measurement, the remote signalling of the capacitor, reactor of main transformer low-pressure side comprises the following steps：
4.1) setting of threshold value up and down：Upper threshold value refers to distant when capacitor, reactor arrangement put under normal circumstances
Measured value and the minimum value of the ratio of equipment nominal reactive capacity, are designated as fLmt1；Lower threshold value refer under normal circumstances capacitor,
Telemetry value and the maximum of the ratio of equipment nominal reactive capacity, are designated as fLmt0 when reactor arrangement is exited；
Upper and lower threshold value is to carry out artificial setting according to specific circumstances, also there is respective model under normal circumstances
Enclose, upper threshold value general satisfaction condition 0.6<=fLmt1<=0.9；Lower threshold value general satisfaction condition 0.1<=fLmt0<=
0.3.In this example, it is 0.8 that we set threshold value fLmt1, and lower threshold value is 0.2.
4.2) idle remote measurement is checked：Capacitor, the rated capacity of reactor are obtained from electric network model parameter, is designated as
FQNom, unit kVar；The real-time measurement of capacitor, reactor, is designated as fQCur, and unit kVar, its absolute value is designated as fabs
(fQCur), remember that the absolute value form of following numerical value is fabs (x)；When capacitor, reactor are in running status, such as
Fruit meets condition：fabs(fQCur)<FQNom*fLmt1, then illustrate the capacitor, the remote measure and communication of reactor is not corresponded to；Work as electricity
When container, reactor are in non-operating state, if meeting condition：fabs(fQCur)>FQNom*fLmt0, then illustrate the electric capacity
Device, the remote measure and communication of reactor are not corresponded to；
To capacitor C1, rated capacity is 60MVar, and the absolute value that reactive power is measured is 5MVar, and what is be connected with C1 is disconnected
Road device is off, therefore C1 is in non-operating state, and lower threshold value fLmt0 is 0.2, therefore needs judgement 5>60*0.2, i.e., 5
>12 are unsatisfactory for, then illustrate that C1 capacitive reactance devices check remote measure and communication by the idle method of telemetering consistent.
To reactor L1, rated capacity is 40MVar, and the absolute value that reactive power is measured is 28Mvar, and what is be connected with L1 is disconnected
Road device is in closure state, therefore L1 is in running status, and upper threshold value fLmt1 is 0.8, therefore needs judgement 28<40*0.8, i.e., 28
<32 meet condition, then illustrate that reactor L1 remote measure and communications are not corresponded to.
4.3) telemetering of current is checked：
4.31) load current value is obtained；The rated current of electric capacity/anti-device is designated as fINom, unit A；Slave unit nameplate parameter
Middle acquisition capacitor, the nominal reactive capacity of reactor are designated as Q, and unit kVar and rated voltage are designated as U, unit kV, calculate electricity
Container, the rated current of reactor are：FINom=Q/U；
Capacitor C1, rated current Ic=60*1000/38.5*1.732=900A；
Reactor L1, rated current Il=40*1000/38.5*1.732=600A；
4.32) real-time measurement of capacitor, reactor current, is designated as ICur, unit A；When capacitor, reactor are in fortune
During row state, if meeting condition：fabs(ICur)<FINom*fLmt1, then illustrate the remote measure and communication of the capacitor, reactor
Do not correspond to；When capacitor, reactor are in non-operating state, if meeting condition：fabs(ICur)>FINom*fLmt0, then
Illustrate the capacitor, the remote measure and communication of reactor is not corresponded to；
Capacitor C1, the breaker being attached thereto is off, therefore C1 is in non-operating state, the real-time amount of electric current
Measured value is 10A, condition criterion formula 10>900*0.8, i.e., 10>720, it is clear that be unsatisfactory for this condition, illustrate C1 remote measure and communications pair
Should.
Reactor L1, the breaker being attached thereto is in closure state, therefore L1 is in running status, the real-time measurement of electric current
It is 420A to be worth, condition criterion formula 420<600*0.8, i.e., 420<480, it is clear that meet this condition, illustrate that L1 remote measure and communications are not right
Should.
4.4) in above-mentioned steps 4.2) and idle remote measurement and the verification of telemetering of current 4.3) in, as long as passing through one of which
Judge to determine that the remote measure and communication for having capacitor, reactor is not corresponded to, i.e. the automatism voltage control of the locking transformer station, and provide announcement
Alert information；
5) the idle remote measurement of capacitor, reactor to main transformer low-pressure side and the school of the idle remote measurement uniformity of main transformer low-pressure side
Core comprises the following steps：
5.1) setting of threshold value：Refer to the capacitor of main transformer low-pressure side, the idle remote measurement of reactor under normal circumstances
The absolute value taken after the difference verification reference value idle with main transformer low-pressure side of absolute value and the idle remote measurement absolute value of main transformer low-pressure side
The maximum of ratio, is designated as fLmt；
Threshold value is to carry out artificial setting according to specific circumstances, also there is its scope, threshold value one under normal circumstances
As meet condition 0.1<=fLmt1<=0.3, in this example, it is 0.2 that we set threshold value fLmt1.
5.2) the idle telemetry value of main transformer low-pressure side, directly by measuring acquisition, is designated as fTrfmVar, unit MVar；
It is fTrfmVar=-38MVar that the low-pressure side of main transformer T1 is idle to be measured.
5.3) the idle remote measurement of the capacitor of main transformer low-pressure side, reactor, by the topological relation in transformer station, finds institute
There are capacitor, the reactor arrangement being connected on the bus of this main transformer low-pressure side side, and to the reactive power measurement of these equipment
Value is added, and draws the idle telemetry value of main transformer low-pressure side capacitor, reactor, is designated as fCpVar, unit MVar；
The idle measurement of capacitor C1 is 5MVar, and the idle measurement of reactor L1 is -28Mvar, therefore fCpVar=5-28
=-23MVar.
5.4) determine verification reference value, be designated as fTrfmBase, its obtaining value method is：As fabs (fTrfmVar)>fDead
When, fTrfmBase=fabs (fTrfmVar)；As fabs (fTrfmVar)<During fDead, fTrfmBase=fDead；fDead
It is the parameter for setting, using 0.3~0.5 times of separate unit reactive apparatus capacity, unit MVar；
In this example, a total of two of the reactive apparatus of the low-pressure side of main transformer T1, capacitor C1 and capacitor L1, capacity point
Not Wei 60MVar and 40MVar, the capacity of the low capacity reactive apparatus that fDead is 0.5 times can be set in this example, then fDead=
40*0.5=20MVar, due to fabs (fTrfmVar)=38>20, then set fTrfmBase=fabs (fTrfmVar)=
38MVar。
5.5) absolute value is checked；If meeting condition：
fabs(fabs(fTrfmVar)-fabs(fCpVar))>fLmt*fTrfmBase
Then think the idle remote measurement of the capacitor, reactor of main transformer low-pressure side and differ with the idle remote measurement of main transformer low-pressure side
Cause；
In this example, fabs (38-23)>0.2*38, i.e., 15>7.6, meet this condition, then illustrate main transformer T1 low-pressure sides
Remote measurement that capacitor is idle is inconsistent with the idle remote measurement of main transformer low-pressure side.
5.5) direction is checked；If fabs (fTrfmVar)>FDead, further travel direction is checked；Note capacitor sends nothing
For just during work(, main transformer low-pressure side is idle when flowing into main transformer for just；If fTrfmVar*fCpVar<0, i.e. main transformer low-pressure side are idle
Measuring value is different from electric capacity/anti-total reactive sign of device, then the capacitor of main transformer low-pressure side, the idle remote measurement of reactor and and main transformer
Low-pressure side is idle, and remote measurement is inconsistent；
In this example, for condition fabs (fTrfmVar)>FDead, 38>20, therefore want further travel direction to check.
38* (- 23)=- 874<Measurement that 0, i.e. main transformer T1 low-pressure sides are idle is different from the total idle symbol of electric capacity/anti-device, illustrates main transformer T1
The idle remote measurement of capacitor of low-pressure side is inconsistent with the idle remote measurement of main transformer low-pressure side.
5.6) by above-mentioned absolute value verification and direction verification 5.4) with 5.5) two steps, as long as there is a kind of situation explanation
The idle remote measurement of the capacitor, reactor of main transformer low-pressure side and, i.e. locking power transformation inconsistent with the idle remote measurement of main transformer low-pressure side
The automatism voltage control stood, and warning information is given, ensure that the safe operation of system and equipment；
In this example, the remote measurement and remote signalling of reactor L1 are not corresponded to, and the capacitor of main transformer T1 low-pressure sides, reactor
Idle remote measurement and inconsistent with the idle remote measurement of main transformer low-pressure side, therefore want the control unit U1 belonging to locking.
6) go to step 1 continuation detection again when next round controlling cycle arrives and check.
Claims (1)
1. to the check method of reactive apparatus running status in transformer station's automatism voltage control, it is characterised in that including following step
Suddenly：
1) when controlling cycle arrives, the complete topological structure of current transformer substation is obtained from grid monitoring system first, is come with this
Form the control unit of transformer station；
2) in transformer station after control unit generation, the real-time measurement data of the reactive apparatus in control unit are run to it
State is checked；
3) verification packet of transformer station's reactive apparatus running status contains two checks of step, and the first step is to main transformer low-pressure side
Capacitor, the remote measurement of reactor, the uniformity of remote signalling are checked, and second step is capacitor, the reactor to main transformer low-pressure side
Idle remote measurement checked with the idle remote measurement uniformity of main transformer low-pressure side；
4) the uniformity check to remote measurement, the remote signalling of the capacitor, reactor of main transformer low-pressure side comprises the following steps：
4.1) setting of threshold value up and down：Upper threshold value refers to telemetry value when capacitor, reactor arrangement put under normal circumstances
With the minimum value of the ratio of equipment nominal reactive capacity, fLmt1 is designated as；Lower threshold value refers to capacitor, reactance under normal circumstances
Telemetry value and the maximum of the ratio of equipment nominal reactive capacity, are designated as fLmt0 when device equipment is exited；
4.2) idle remote measurement is checked：Capacitor, the rated capacity of reactor are obtained from electric network model parameter, fQNom is designated as, it is single
Position kVar；The real-time measurement of capacitor, reactor, is designated as fQCur, unit kVar, and its absolute value is designated as fabs (fQCur), note
The absolute value form of following numerical value is fabs (x)；When capacitor, reactor are in running status, if meeting condition：
fabs(fQCur)<FQNom*fLmt1, then illustrate that the capacitor, the remote measurement of reactor, remote signalling are not corresponded to；When capacitor, reactance
When device is in non-operating state, if meeting condition：fabs(fQCur)>FQNom*fLmt0, then illustrate the capacitor, reactor
Remote measurement, remote signalling do not correspond to；
4.3) telemetering of current is checked：
4.31) load current value is obtained；Electric capacity, the rated current of anti-device are designated as fINom, unit A；Obtained in slave unit nameplate parameter
Power taking container, the nominal reactive capacity of reactor are designated as Q, and unit kVar and rated voltage are designated as U, unit kV, calculable capacitor,
The rated current of reactor is：FINom=Q/U；
4.32) real-time measurement of capacitor, reactor current, is designated as ICur, unit A；When capacitor, reactor are in operation shape
During state, if meeting condition：fabs(ICur)<FINom*fLmt1, then illustrate that the capacitor, the remote measurement of reactor, remote signalling be not right
Should；When capacitor, reactor are in non-operating state, if meeting condition：fabs(ICur)>FINom*fLmt0, then illustrate
The capacitor, the remote measurement of reactor, remote signalling are not corresponded to；
4.4) in step 4.2) and idle remote measurement and the check of telemetering of current 4.3) in, if judging to determine by any of which
There are capacitor, the remote measurement of reactor, remote signalling not to correspond to, then the automatism voltage control of the locking transformer station, and provide warning information；
5) the idle remote measurement of capacitor, reactor to main transformer low-pressure side and the verification packet of the idle remote measurement uniformity of main transformer low-pressure side
Include following steps：
5.1) setting of threshold value：The capacitor of main transformer low-pressure side, the absolute value of the idle remote measurement of reactor under normal circumstances
With the ratio of the absolute value taken after difference of the idle remote measurement absolute value of main transformer low-pressure side verification reference value idle with main transformer low-pressure side
Maximum, is designated as fLmt；
5.2) the idle telemetry value of main transformer low-pressure side, directly by measuring acquisition, is designated as fTrfmVar, unit MVar；
5.3) the idle remote measurement of the capacitor of main transformer low-pressure side, reactor, by the topological relation in transformer station, finds all companies
It is connected to capacitor, reactor arrangement on the bus of this main transformer low-pressure side, and reactive power measuring value to these equipment is carried out
It is added, draws the idle telemetry value of main transformer low-pressure side capacitor, reactor, is designated as fCpVar, unit MVar；
5.4) determine verification reference value, be designated as fTrfmBase, its obtaining value method is：As fabs (fTrfmVar)>During fDead,
FTrfmBase=fabs (fTrfmVar)；As fabs (fTrfmVar)<During fDead, fTrfmBase=fDead；FDead is to set
The parameter put, using 0.3~0.5 times of separate unit reactive apparatus capacity, unit MVar；
5.5) absolute value is checked；If meeting condition：
fabs(fabs(fTrfmVar)-fabs(fCpVar))>fLmt*fTrfmBase
Then think that the idle remote measurement and the idle remote measurement of main transformer low-pressure side of the capacitor, reactor of main transformer low-pressure side are inconsistent；
5.6) direction is checked；If fabs (fTrfmVar)>FDead, further travel direction is checked；When note capacitor sends idle
It is just when main transformer is flowed into for just, main transformer low-pressure side is idle；If fTrfmVar*fCpVar<Measurement that 0, i.e. main transformer low-pressure side are idle
Value is different from capacitor, the total reactive sign of reactor, then the capacitor of main transformer low-pressure side, the idle remote measurement of reactor and main transformer are low
The pressure idle remote measurement in side is inconsistent；
5.7) by above-mentioned absolute value check and direction check 5.5) with 5.6) two steps, if there is a kind of situation explanation main transformer low
The idle remote measurement and the idle remote measurement of main transformer low-pressure side of the capacitor, reactor of pressure side are inconsistent, then the locking transformer station is automatic
Voltage is controlled, and provides warning information, ensure that the safe operation of system and equipment；
6) to go to step 1) continue again when next round controlling cycle arrives and detect and check.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762748.XA CN105226666B (en) | 2015-11-10 | 2015-11-10 | To the check method of reactive apparatus running status in transformer station's automatism voltage control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762748.XA CN105226666B (en) | 2015-11-10 | 2015-11-10 | To the check method of reactive apparatus running status in transformer station's automatism voltage control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105226666A CN105226666A (en) | 2016-01-06 |
| CN105226666B true CN105226666B (en) | 2017-06-16 |
Family
ID=54995458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510762748.XA Expired - Fee Related CN105226666B (en) | 2015-11-10 | 2015-11-10 | To the check method of reactive apparatus running status in transformer station's automatism voltage control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105226666B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106296457A (en) * | 2016-08-12 | 2017-01-04 | 新疆信息产业有限责任公司 | Save and adjust automated information checking method |
| CN109510227B (en) * | 2018-09-18 | 2021-10-29 | 中国电力科学研究院有限公司 | Method and device for determining steady-state voltage of converter station bus after direct-current blocking |
| CN112803430B (en) * | 2021-01-15 | 2023-03-31 | 广东电网有限责任公司梅州供电局 | Automatic control method and device for transformer substation voltage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008271750A (en) * | 2007-04-24 | 2008-11-06 | Toshiba Corp | Method, device and program for voltage reactive power control for power system |
| CN104538967B (en) * | 2014-11-24 | 2017-01-25 | 广东电网有限责任公司电力调度控制中心 | Method for automatically forming plant and substation coordination group in automatic voltage control of plant and substation coordination |
-
2015
- 2015-11-10 CN CN201510762748.XA patent/CN105226666B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105226666A (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108318782B (en) | Power distribution network fault area identification method based on network topology and distribution transformer power failure information | |
| CN103995172B (en) | Method for on-line monitoring of load current of GIS bus of substation | |
| CN102496072A (en) | System for estimating distributive state of intelligent transformer station | |
| CN101741137B (en) | Network centralized emergency power supply automatic switching method | |
| CN107093928A (en) | Power distribution network scheduling aid decision and trouble analysis system | |
| CN108304613A (en) | Closed loop network powered operation methods of risk assessment | |
| CN103941079B (en) | Power distribution network PT on-line monitoring and fault diagnosis system | |
| CN105226666B (en) | To the check method of reactive apparatus running status in transformer station's automatism voltage control | |
| CN103971292B (en) | Fault accurate identification method based on real-time intra-station graph mapping | |
| CN107453354B (en) | A kind of weak link recognition methods of power distribution network | |
| CN105139158A (en) | Power grid abnormal information intelligent alarming and assistant decision-making method | |
| CN104215879B (en) | A kind of short circuit fault of power distribution network localization method and system | |
| CN107453485A (en) | A kind of management and running information method for inspecting and system | |
| CN106067081A (en) | The ground integrated associating methods of risk assessment of a kind of province | |
| CN105548801A (en) | Fault location method suitable for closed-loop operation of distribution network | |
| CN113376476A (en) | PHM-based operation and maintenance system and method for medium and low voltage power distribution network | |
| CN102983627B (en) | Transition method of intellectualized monitoring system modification process of conventional transformer substation | |
| CN106451384A (en) | Power grid self-healing decision support system based on scheduling emergency plan | |
| CN104297676B (en) | Method, device and system for monitoring circuit breaker of wind generating set | |
| CN105913126A (en) | Transformer station intelligent alarm model method for big data and cloud environment | |
| CN107679745A (en) | A kind of typical rack feeder line power supply reliability evaluation method | |
| CN107910855B (en) | A kind of connection applied to intelligent substation cuts small power supply device | |
| CN103941160B (en) | Power distribution network loop closing detection device and method | |
| CN109466334A (en) | A kind of high-speed rail regenerating braking energy storage system guard method | |
| CN105866630B (en) | A kind of method for diagnosing faults and system of reply whole station loss of learning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20181110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |