WO2020125188A1 - 一种配电网故障负荷转供复电方法 - Google Patents
一种配电网故障负荷转供复电方法 Download PDFInfo
- Publication number
- WO2020125188A1 WO2020125188A1 PCT/CN2019/112519 CN2019112519W WO2020125188A1 WO 2020125188 A1 WO2020125188 A1 WO 2020125188A1 CN 2019112519 W CN2019112519 W CN 2019112519W WO 2020125188 A1 WO2020125188 A1 WO 2020125188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- transfer
- node
- fault
- switch
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
Definitions
- the invention belongs to the field of power system automation, and in particular relates to a method for transferring a fault load from a distribution network to power restoration.
- Distribution network automation is an important part of the smart grid, and distribution network fault handling is the core content of distribution network automation, which is of great significance for improving the reliability of power supply.
- Distribution networks of regional power grids generally operate in open loop. When a section of the circuit or equipment in the distribution network fails, the switch of the substation's outgoing feeder trips. Emergency personnel check the feeder after receiving the notification from the dispatch supervisor, isolate the fault after detecting the fault point, and restore the power supply at the front of the feeder . For the feeder located at the rear of the fault point, if there is a ring network point, you can close the ring network switch to restore the power supply to the user at the rear of the feeder.
- the fault handling mode of distribution automation can be divided into local and centralized types.
- the on-site fault handling mode can complete fault handling without the participation of the master station of the distribution automation system, and is divided into two types: recloser mode and intelligent distributed. Due to the lack of global information in the intelligent fault handling mode, the load transfer is not flexible enough.
- the recloser method does not require the support of the communication network, and can only rely on the cooperation of the automatic switch to complete the troubleshooting.
- the fault handling method of the recloser and the voltage-time sectioner is the typical mode in the recloser mode.
- There are many shortcomings of the recloser method which has a great impact on the network and equipment, and is not suitable for cable lines. There are many inconveniences in debugging and setting.
- Intelligent distribution is also called network protection or surface protection. It requires a high-speed communication network to support its fault handling, relying on mutual communication and cooperation of intelligent terminals to complete fault location, fault isolation and load recovery.
- the centralized fault handling mode is based on the distribution automation system composed of the master station, terminal and communication network.
- the fault information is sent to the main station of the distribution automation system, and the main station sends remote control commands to the terminal to locate, isolate and restore the fault.
- Centralized fault handling mode The fault handling mode is unified, has low requirements on the bandwidth of the communication network, is convenient to debug and operate, has a high cost performance, and is the most promising fault handling mode.
- the invention provides a method for transferring fault load from a distribution network to power restoration.
- a method for transferring a fault load from a distribution network to power restoration includes the following steps:
- the substation outlet switch (or the automatic switch upstream of the fault point) trips, and from this point to the fault point, the fault is searched forward.
- the switch that isolates the fault upstream of the fault point is named the forward disconnector, and isolates the fault downstream of the fault point.
- the switch is named backward isolating switch, and the forward isolating switch and backward isolating switch isolate the fault segment;
- each load point is a node, there are n in total;
- the load point directly connected to the backward isolating switch is the root node of the fault recovery tree, and is directly connected to the transfer switch and distributed power supply of the adjacent line
- the load node is a leaf node for transfer, and the other leaf node is the end load node of the branch line;
- the main transfer route is compared with the adjacent paths. If the transferable surplus of the main transfer route is greater than the transfer load of another transfer route, the merger is performed.
- the objective function of complex electricity is as follows:
- the load of P i node i, D is not restored power supply load node set, a total of n nodes;
- T contact switch set a total of m contact switches
- K k switch action 1 means closed, 0 means separated
- P k flows through the power of tie switch k, Pr, k spare capacity of tie switch k;
- P l flows through the power of branch l
- P LM the power carrying capacity of l branch l.
- P r,k min ⁇ P r,k ,P LM,l ⁇ ;
- P r,k represents the remaining transferable supply of the transfer route k,
- P LM,l represents the power carrying capacity of line l;
- P′ r,k P r,k -P i ;
- P i represents the load of node i;
- P′ t,k P t,k +P i ;
- P t,k represents the total transfer volume of the transfer route k;
- P′ n,k P n,k +P i ; P n,k represents the untransmitted amount of the transfer route k.
- the specific steps of the S50 are as follows:
- S501.J is a collection of transfer paths converging at the intersection j, and selects the path a with the largest transferable amount:
- P r,a max ⁇ P r,k ⁇ , k ⁇ J, P r,a represents the remaining transfer volume of path a
- P j is the load of node j
- P'n,a P n,a +P' j , P n,a represents the untransferred amount of the transfer route a.
- the specific steps of the S60 are as follows:
- the one closest to the fault point is the main transfer route path a, and the remaining transfer routes are sorted according to their total transfer volume P t,x from small to large, and the remaining main transfer routes are compared one by one.
- the distribution network fault load transfer-to-recovery method provided by the present invention generates a fault action condition table and action sequence table by combining automatic modeling and manual mode methods, and automatically triggers the action sequence when the action conditions are met, thereby greatly Increase the accuracy and reliability of the action.
- FIG. 1 is a fault recovery process of a method for transferring a fault load from a distribution network to a power recovery method provided by the present invention
- Example 2 is a wiring diagram before failure in Example 2;
- FIG. 3 is a diagram of a fault recovery idea in Embodiment 2.
- FIG. 3 is a diagram of a fault recovery idea in Embodiment 2.
- a method for transferring a fault load from a distribution network to power restoration includes the following steps:
- the outlet switch of the substation trips, and from this point to the fault point, the fault is searched and advanced.
- the switch is named backward isolating switch, and the forward isolating switch and backward isolating switch isolate the fault segment;
- each load point is a node, a total of n;
- the load point directly connected to the backward isolating switch is the root node of the fault recovery tree, and is directly connected to the transfer switch and distributed power supply of the adjacent line
- the load node is a leaf node for transfer, and the other leaf node is the end load node of the branch line;
- the main transfer route is compared with the adjacent path. If the transferable surplus of the main transfer route is greater than the transfer load of another transfer route, the merger is performed.
- the objective function of complex electricity is as follows:
- the load of P i node i, D is not restored power supply load node set, a total of n nodes;
- T contact switch set a total of m contact switches
- K k switch action 1 means closed, 0 means separated
- P k flows through the power of tie switch k, Pr, k spare capacity of tie switch k;
- P l flows through the power of branch l
- P LM the power carrying capacity of l branch l.
- P r,k min ⁇ P r,k ,P LM,l ⁇ ;
- P r,k represents the remaining transferable supply of the transfer route k,
- P LM,l represents the power carrying capacity of line l;
- P′ r,k P r,k -P i ;
- P i represents the load of node i;
- P′ t,k P t,k +P i ;
- P t,k represents the total transfer volume of the transfer route k;
- P′ n,k P n,k +P i ; P n,k represents the untransmitted amount of the transfer route k.
- S501.J is a collection of transfer paths converging at the intersection j, and selects the path a with the largest transferable amount:
- P r,a max ⁇ P r,k ⁇ , k ⁇ J, P r,a represents the remaining transfer volume of path a
- P j is the load of node j
- P'n,a P n,a +P' j , P n,a represents the untransferred amount of the transfer route a.
- the one closest to the fault point is the main transfer route path a, and the remaining transfer routes are sorted according to their total transfer volume P t,x from small to large, and the remaining main transfer routes are compared one by one.
- Pr ,a ⁇ Pt,x it means that the main transfer route can be combined with another transfer route; after the merger, update:
- FIG. 2 is a wiring diagram before the fault.
- the square in the figure represents the line switch, the circle represents the switch on the feeder, and they are all controllable; the solid means closed, and the hollow means open.
- L represents the load, and the numbers below it indicate the load.
- S indicates the power supply, and the number below indicates its capacity.
- R is the line and the switch above, and the number below it indicates its current carrying capacity.
- step 1 The calculation process of step 1 is shown in Figure 3. Proceed from the S2, S3, S4 extension feeder to the fault point L1, each time a switch is passed to calculate the remaining transferable volume, total transfer volume, and untransferred volume of the transfer path. When reaching the intersection point L3, the transferable quantities of R4, R6, and R10 are compared, which are 700, 0, and 250, respectively. It is concluded that R4 is larger, and the intersection load L3 and the unsupplied load L5 of path 2 are recharged by S2 through R4. After S3's power recovery path passes L3, it continues to recover L2 load through R3, and the remaining transferable amount of 300 remains. At this time, all the loads can be restored, forming three transfer routes, from right to left, respectively: path 1.L4-L3-L2, path 2.S3-L7-L6-L5, path 3.L10-L9 -L8.
- step 2 The calculation process of step 2 is as follows:
- P t,L3 ⁇ P t,L2 compare L3 first, Pr,L1 >P t,L3 , so L1 merges L2.
- L1 continues to be compared with L2, Pr, L1 ⁇ Pt, L2 , that is, 50 ⁇ 450, so L2 cannot be merged.
- the final power-on operation step is to separate R7 and close R4 and R9.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
一种配电网故障负荷转供复电方法，通过两次配电线路树形遍历即可找到最优解，第一次遍历找出可行解，第二次遍历合并转供路径形成最优解。本算法可以简单快速地实现负荷转供，满足实时应用的要求。该算法简单高效，能适应线路载流量限制约束，通过配电线路树形拓朴后根遍历搜索找到最大限度恢复供电的可行解，然后合并转供路径形成操作最小的最优解。由此可以简单快速地用最小的操作量实现最大负荷转供，满足实时应用的要求。
Description
本发明属于电力系统自动化领域，尤其涉及一种配电网故障负荷转供复电方法。
配网自动化是智能电网的重要组成部分，而配电网故障处理是配网自动化的核心内容，对于提高供电可靠性具有重要意义。
地区电网的配电网一般开环运行。当配电网某段电路或设备发生故障时变电站出线馈线的开关跳开，急修人员接到调度监控员通知后对该馈线进行检查，查出故障点后进行故障隔离，恢复馈线前段的供电。对于位于故障点后段馈线，如果有环网点，就可以合上环网开关，恢复对馈线后段用户的供电。
按照故障处理方式的不同，配电自动化的故障处理模式可以分为就地型和集中型。
就地型故障处理模式不需要配电自动化系统主站参与就可完成故障处理，分为重合器方式和智能分布式两类。由于智地型故障处理模式缺乏全局信息，负荷转供时不够灵活。
重合器方式不需要通信网的支持，仅仅依靠自动化开关的配合就可完成故障处理。重合器与电压时间型分段器配合的故障处理方式是重合器方式中的典型模式。重合器方式的缺点不少，重合方式对网络和设备冲击较大，也不适合电缆线路，调试整定也有诸多不便。
智能分布式也叫网络式保护或面保护，需要高速通信网支持其故障处理，依靠智能终端的相互通信和配合完成故障定位、故障隔离和负荷恢复。
集中型故障处理模式基于主站、终端和通信网构成的配电自动化系统。故障信息上送到配电自动化系统主站，由主站对终端发送遥控命令对故障进行定位、隔离和负荷恢复。集中型故障处理模式故障处理模式统一，对通信网带宽要求低，调试运行方便，有很高的性价比，是最有前途的故障处理模式。
发明内容
为了克服目前运用启发式搜索解决配电线路负荷转供的问题，但启发式方法不保证找到最优解，实现复杂，计算时间长的问题。本发明提出一种配电网故障负荷转供复电方法。
一种配电网故障负荷转供复电方法，包括以下步骤：
S10.故障发生后变电站出线开关(或故障点上游的自动化开关)跳闸，从该点向故障点搜索前进，在故障点上游隔离故障的开关命名为前向隔离开关，在故障点下游隔离故障的开关命名为后向隔离开关，前向隔离开关和后向隔离开关”将故障段隔离开来；
S20.构建故障恢复树，每个负荷点为节点，共有n个；与后向隔离开关直接连接的负荷点为故障恢复树的根节点，与邻近线路的转供开关和分布式电源直接连接的负荷节点是转供叶节点，另外的叶节点是分支线路的末端负荷节点；
S30.将分支线的负荷归算到连接的主干节点上；
S40.从联络开关向上游沿支路l推进时，推进到负荷节点i，扣减可转供量并扣减支路l的可专供负荷，计算出剩余可专供负荷同时增加总的转供量；直到推进到负的可转供量；
S50.在分叉节点j，比较汇聚于此的各转供线路的剩余可转供量，取有最大可转供量的路径a继续前进；在向故障点推进之前先检查另外的路径是否有未转供量，有则将其归算到交叉节点j的负荷；
S60.全部转供路径形成后，主转供路径与邻近的路径比较，主转供路径的可转供余量如果大于另外转供路径的转供负荷，则进行合并。
优选的，复电的目标函数如下：
恢复失电力负荷：
其中：P
i节点i的负荷，D未恢复供电负荷节点集合，共n个节点；
开关操作次数：
其中：T联络开关集合，共m个联络开关；K
k开关动作，1表示合上，0表示分开；
约束条件：
联络开关备用容量约束：
|P
k|＜P
r,k (3)
其中：P
k流过联络开关k的功率，P
r,k联络开关k的备用容量；
支路容量限制约束：
|P
l|＜P
LM,l (4)
其中：P
l流过支路l的功率；P
LM,l支路l的功率载流量。
优选的，所述S40的具体步骤如下：
S401.从联络开关(第k个)向上游沿支路l推进时，推进到负荷节点i；
S402.考虑载流量，能流经支路l的最大值为P
LM,j，故可转供量更新为：
P
r,k＝min{P
r,k,P
LM,l}；P
r,k表示转供路径k的剩余可转供量，P
LM,l表示线路l的功率载流量；
扣减可转供量：
P′
r,k＝P
r,k-P
i；P
i表示节点i的负荷；
S403.如果判断P'
r,a的值，若P'
r,k≥0则增加总的转供量：
P′
t,k＝P
t,k+P
i；P
t,k表示转供路径k的总转供量；
否则此线路做断开标记：
P'
r,k＝0
S404.同时增加总的未转供量：
P′
n,k＝P
n,k+P
i；P
n,k表示转供路径k的未转供量。
优选的，所述S50的具体步骤如下：
S501.J为汇聚于交叉点j的转供路径的集合，选取最大可转供量的路径a：
P
r,a＝max{P
r,k}，k∈J，P
r,a表示路径a的剩余转供量，
S502.与节点j相连的转供路径的未转供负荷也归算到节点j：
S503.扣减经过节点j后的可转供量：
P′
r,a＝P
r,a-P
j
S504.判断P'
r,a的值，若P'
r,k≥0则增加总的转供量：
P′
t,a＝P
t,a+P′
j
否则转供路径a做断开标记：
P'
r,a＝0
S505.增加总的未转供量：
P'
n,a＝P
n,a+P'
j，P
n,a表示转供路径a的未转供量。
优选的，所述S60的具体步骤如下：
S601.全部转供路径形成后，最接近故障点的为主转供路径路径a，其余转供路径按其总的转供量P
t,x从小到大排序，逐个比较主转供路径的剩余可转供负荷P
r,a和另外的转供路径的总供负荷P
t,x；
S602.若P
r,a≥P
t,x，则表示主转供路径可以合并另外的转供路径；合并后更新：
P′
r,a＝P
r,a-P
t,x
否则，再也不能合并转供路径，运算结束。
与现有技术相比，本发明技术方案的有益效果是：
本发明提供的配电网故障负荷转供复电方法，通过结合自动建模及人工模式的方法，生成故障的动作条件表和动作序列表，当动作条件满足时自动触发动作序列，从而大幅度增加动作的准确性与可靠性。
图1为本发明提供的配电网故障负荷转供复电方法故障恢复过程；
图2为实施例2中故障前结线图；
图3为实施例2中的故障恢复思路图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一单元实施例，仅用于示例性说明，不能理解为对本专利的限制。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
下面结合附图和实施例对本发明的技术方案做进一步的说明。
实施例1
一种配电网故障负荷转供复电方法，包括以下步骤：
S10.故障发生后变电站出线开关(或故障点上游的自动化开关)跳闸，从该点向故障点搜索前进，在故障点上游隔离故障的开关命名为前向隔离开关，在故障点下游隔离故障的开关命名为后向隔离开关，前向隔离开关和后向隔离开关”将故障段隔离开来；
S20.构建故障恢复树，每个负荷点为节点，共有n个；与后向隔离开关直接连接的负荷点为故障恢复树的根节点，与邻近线路的转供开关和分布式电源直接连接的负荷节点是转供叶节点，另外的叶节点是分支线路的末端负荷节点；
S30.将分支线的负荷归算到连接的主干节点上；
S40.从联络开关向上游沿支路l推进时，推进到负荷节点i，扣减可转供量并扣减支路l的可专供负荷，计算出剩余可专供负荷同时增加总的转供量；直到推进到负的可转供量；
S50.在分叉节点j，比较汇聚于此的各转供线路的剩余可转供量，取有最大可转供量的路径a继续前进；在向故障点推进之前先检查另外的路径是否有未转供量，有则将其归算到交叉节点j的负荷；
S60.全部转供路径形成后，主转供路径与邻近的路径比较，主转供路径的可转供余量如果大于另外转供路径的转供负荷，则进行合并。
作为更进一步的优选实施方案，复电的目标函数如下：
恢复失电力负荷：
其中：P
i节点i的负荷，D未恢复供电负荷节点集合，共n个节点；
开关操作次数：
其中：T联络开关集合，共m个联络开关；K
k开关动作，1表示合上，0表示分开；
约束条件：
联络开关备用容量约束：
|P
k|＜P
r,k (3)
其中：P
k流过联络开关k的功率，P
r,k联络开关k的备用容量；
支路容量限制约束：
|P
l|＜P
LM,l (4)
其中：P
l流过支路l的功率；P
LM,l支路l的功率载流量。
作为更进一步的优选实施方案，所述S40的具体步骤如下：
S401.从联络开关(第k个)向上游沿支路l推进时，推进到负荷节点i；
S402.考虑载流量，能流经支路l的最大值为P
LM,j，故可转供量更新为：
P
r,k＝min{P
r,k,P
LM,l}；P
r,k表示转供路径k的剩余可转供量，P
LM,l表示线路l的功率载流量；
扣减可转供量：
P′
r,k＝P
r,k-P
i；P
i表示节点i的负荷；
S403.如果判断P'
r,a的值，若P'
r,k≥0则增加总的转供量：
P′
t,k＝P
t,k+P
i；P
t,k表示转供路径k的总转供量；
否则此线路做断开标记：
P'
r,k＝0
S404.同时增加总的未转供量：
P′
n,k＝P
n,k+P
i；P
n,k表示转供路径k的未转供量。
作为更进一步的优选实施方案，所述S50的具体步骤如下：
S501.J为汇聚于交叉点j的转供路径的集合，选取最大可转供量的路径a：
P
r,a＝max{P
r,k}，k∈J，P
r,a表示路径a的剩余转供量，
S502.与节点j相连的转供路径的未转供负荷也归算到节点j：
S503.扣减经过节点j后的可转供量：
P′
r,a＝P
r,a-P
j
S504.判断P'
r,a的值，若P'
r,k≥0则增加总的转供量：
P′
t,a＝P
t,a+P′
j
否则转供路径a做断开标记：
P'
r,a＝0
S505.增加总的未转供量：
P'
n,a＝P
n,a+P'
j，P
n,a表示转供路径a的未转供量。
作为更进一步的优选实施方案，所述S60的具体步骤如下：
S601.全部转供路径形成后，最接近故障点的为主转供路径路径a，其余转供路径按其总的转供量P
t,x从小到大排序，逐个比较主转供路径的剩余可转供负荷P
r,a和另外的转供路径的总供负荷P
t,x；
S602.若P
r,a≥P
t,x，则表示主转供路径可以合并另外的转供路径；合并后更新：
P′
r,a＝P
r,a-P
t,x
否则，再也不能合并转供路径，运算结束。
实施例2
本实施例提供的配电网故障负荷转供复电方法，图2为故障前的结线图。图中方形表示出线开关，圆形表示馈线上的开关，它们全部可控；实心表示合上，空心表示断开。L表示负载，其下方数字表示负载量。S表示电源，其下方数字表示其容量。R为线路及上面的开关，其下方数字表示其载流量。
当故障点在L1时，L1的前向隔离开关R1断开，后向隔离隔离开关R2也断开，将故障点L1隔离开来。
1.3步骤1计算过程如图3所示。分别从S2、S3、S4延馈线向故障点L1推进，每过一个开关计算本转供路径的剩余的可转供量、总转供量、未转供量。到达交叉点L3时比较R4、R6、R10的可转供量，分别为700、0和250。得出R4较大，交叉点负荷L3和路径2的未供负荷L5由S2通过R4复电。S2的复电路径经过L3后继续通过R3恢复L2负荷后剩下300的剩余可转供量。此时所有的负荷已经能够恢复，形成3条转供路径，从右到左，分别是：路径1.L4-L3-L2，路径2.S3-L7-L6-L5，路径3.L10-L9-L8。
1.3步骤2计算过程如图下：
路径1最终到达节点L2，离故障点最近，为主转供路径，其剩余可转供负荷P
r,L1＝300。另外的转供路径L2和L3，其总转供负荷分别为P
t,L2＝450、P
t,L3＝250。P
t,L3＜P
t,L2，先比较L3，P
r,L1＞P
t,L3，故L1合并L2。合并后更新P
r,L1＝P
r,L1-P
t,L3＝300-250＝50
L1继续与L2比较，P
r,L1＜P
t,L2，即50＜450，故不能合并L2。
最终的复电操作步骤是分开R7，合上R4、R9。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。
Claims (5)
- 一种配电网故障负荷转供复电方法，其特征在于，包括以下步骤：S10.故障发生后变电站出线开关(或故障点上游的自动化开关)跳闸，从该点向故障点搜索前进，在故障点上游隔离故障的开关命名为前向隔离开关，在故障点下游隔离故障的开关命名为后向隔离开关，前向隔离开关和后向隔离开关”将故障段隔离开来；S20.构建故障恢复树，每个负荷点为节点，共有n个；与后向隔离开关直接连接的负荷点为故障恢复树的根节点，与邻近线路的转供开关和分布式电源直接连接的负荷节点是转供叶节点，另外的叶节点是分支线路的末端负荷节点；S30.将分支线的负荷归算到连接的主干节点上；S40.从联络开关向上游沿支路l推进时，推进到负荷节点i，扣减可转供量并扣减支路l的可专供负荷，计算出剩余可专供负荷同时增加总的转供量；直到推进到负的可转供量；S50.在分叉节点j，比较汇聚于此的各转供线路的剩余可转供量，取有最大可转供量的路径a继续前进；在向故障点推进之前先检查另外的路径是否有未转供量，有则将其归算到交叉节点j的负荷；S60.全部转供路径形成后，主转供路径与邻近的路径比较，主转供路径的可转供余量如果大于另外转供路径的转供负荷，则进行合并。
- 根据权利要求1所述的配电网故障负荷转供复电方法，其特征在于，复电的目标函数如下：恢复失电力负荷：
其中：P i节点i的负荷，D未恢复供电负荷节点集合，共n个节点；开关操作次数：
其中：T联络开关集合，共m个联络开关；K k开关动作，1表示合上，0表示分开；约束条件：联络开关备用容量约束：|P k|＜P r,k (3)其中：P k流过联络开关k的功率，P r,k联络开关k的备用容量；支路容量限制约束：|P l|＜P LM,l (4)其中：P l流过支路l的功率；P LM,l支路l的功率载流量。 - 如权利要求1所述的配电网故障负荷转供复电方法，其特征在于，所述S40的具体步骤如下：S401.从联络开关(第k个)向上游沿支路l推进时，推进到负荷节点i；S402.考虑载流量，能流经支路l的最大值为P LM,j，故可转供量更新为：P r,k＝min{P r,k,P LM,l}；P r,k表示转供路径k的剩余可转供量，P LM,l表示线路l的功率载流量；扣减可转供量：P′ r,k＝P r,k-P i；P i表示节点i的负荷；S403.如果判断P′ r,a的值，若P′ r,k≥0则增加总的转供量：P′ t,k＝P t,k+P i；P t,k表示转供路径k的总转供量；否则此线路做断开标记：P′ r,k＝0S404.同时增加总的未转供量：P′ n,k＝P n,k+P i；P n,k表示转供路径k的未转供量。
- 如权利要求1所述的配电网故障负荷转供复电方法，其特征在于，所述S50的具体步骤如下：S501.J为汇聚于交叉点j的转供路径的集合，选取最大可转供量的路径a：P r,a＝max{P r,k}，k∈J，P r,a表示路径a的剩余转供量，S502.与节点j相连的转供路径的未转供负荷也归算到节点j：P j为节点j的负荷
S503.扣减经过节点j后的可转供量：P′ r,a＝P r,a-P jS504.判断P′ r,a的值，若P′ r,k≥0则增加总的转供量：P′ t,a＝P t,a+P′ j否则转供路径a做断开标记：P′ r,a＝0S505.增加总的未转供量：P′ n,a＝P n,a+P′ j，P n,a表示转供路径a的未转供量。 - 如权利要求1所述的配电网故障负荷转供复电方法，其特征在于，所述S60的具体步骤如下：S601.全部转供路径形成后，最接近故障点的为主转供路径路径a，其余转供路径按其总的转供量P t,x从小到大排序，逐个比较主转供路径的剩余可转供负荷P r,a和另外的转供路径的总供负荷P t,x；S602.若P r,a≥P t,x，则表示主转供路径可以合并另外的转供路径；合并后更新：P′ r,a＝P r,a-P t,x否则，再也不能合并转供路径，运算结束。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577834.3 | 2018-12-20 | ||
| CN201811577834.3A CN109980647B (zh) | 2018-12-20 | 2018-12-20 | 一种配电网故障负荷转供复电方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2020125188A1 true WO2020125188A1 (zh) | 2020-06-25 |
| WO2020125188A9 WO2020125188A9 (zh) | 2020-07-23 |
Family
ID=67076292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/112519 WO2020125188A1 (zh) | 2018-12-20 | 2019-10-22 | 一种配电网故障负荷转供复电方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109980647B (zh) |
| WO (1) | WO2020125188A1 (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980647B (zh) * | 2018-12-20 | 2020-08-04 | 广东电网有限责任公司 | 一种配电网故障负荷转供复电方法 |
| WO2022052142A1 (zh) * | 2020-09-08 | 2022-03-17 | 广东电网有限责任公司江门供电局 | 一种开环电网负荷转供决策中的路径排序方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136721A (zh) * | 2011-03-08 | 2011-07-27 | 中国电力科学研究院 | 一种计及多目标优化的供电恢复推理搜索方法 |
| EP2933891A1 (en) * | 2014-04-17 | 2015-10-21 | ABB Technology AG | Load restoration in a high or medium voltage substation |
| CN105894173A (zh) * | 2016-01-26 | 2016-08-24 | 山东大学 | 一种基于多叉树搜索的供电恢复方案生成算法 |
| CN107302496A (zh) * | 2017-05-26 | 2017-10-27 | 重庆邮电大学 | 一种基于带内控制的软件定义网络链路故障恢复方法 |
| CN109980647A (zh) * | 2018-12-20 | 2019-07-05 | 广东电网有限责任公司 | 一种配电网故障负荷转供复电方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655169A (zh) * | 2016-12-15 | 2017-05-10 | 国网黑龙江省电力有限公司 | 一种基于路径描述的配电网n‑1安全校验方法 |
-
2018
- 2018-12-20 CN CN201811577834.3A patent/CN109980647B/zh active Active
-
2019
- 2019-10-22 WO PCT/CN2019/112519 patent/WO2020125188A1/zh active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136721A (zh) * | 2011-03-08 | 2011-07-27 | 中国电力科学研究院 | 一种计及多目标优化的供电恢复推理搜索方法 |
| EP2933891A1 (en) * | 2014-04-17 | 2015-10-21 | ABB Technology AG | Load restoration in a high or medium voltage substation |
| CN105894173A (zh) * | 2016-01-26 | 2016-08-24 | 山东大学 | 一种基于多叉树搜索的供电恢复方案生成算法 |
| CN107302496A (zh) * | 2017-05-26 | 2017-10-27 | 重庆邮电大学 | 一种基于带内控制的软件定义网络链路故障恢复方法 |
| CN109980647A (zh) * | 2018-12-20 | 2019-07-05 | 广东电网有限责任公司 | 一种配电网故障负荷转供复电方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020125188A9 (zh) | 2020-07-23 |
| CN109980647B (zh) | 2020-08-04 |
| CN109980647A (zh) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105470928B (zh) | 基于城市输电网故障恢复的分区分层负荷转移方法 | |
| CN102496937B (zh) | 一种适用于智能配电网的基于负荷均衡故障恢复方法 | |
| CN110474806B (zh) | 一种电力通信网关键节点识别方法 | |
| WO2021139071A1 (zh) | 一种智能户外开关箱及其闭环工字型配电网 | |
| CN107749620A (zh) | 一种含分布式电源配电网供电恢复方法 | |
| CN102751780B (zh) | 广域备自投模型自适应生成方法 | |
| WO2020125188A1 (zh) | 一种配电网故障负荷转供复电方法 | |
| CN105140894A (zh) | 一种基于相位差原理的配电网差动保护方法 | |
| CN111682508A (zh) | 一种适用于区域配电网的差动保护与快速自愈的方法 | |
| CN112134293A (zh) | 一种站所终端公共单元及其基于边缘计算的广域自治方法 | |
| CN115276244B (zh) | 基于5g边缘节点的自愈型馈线自动化控制方法 | |
| CN106651635A (zh) | 一种基于分布式存储的配电网拓扑自适应保护方法 | |
| CN112907051B (zh) | 一种基于调配协同的智能化检修计划生成方法 | |
| CN110635475A (zh) | 一种智能配电网分布式供电恢复系统 | |
| CN107846015A (zh) | 基于对等式通讯的智能配电网负荷转供最优路径选择方法 | |
| Bian et al. | Service restoration for resilient distribution systems coordinated with damage assessment | |
| CN110048384A (zh) | 一种配网高可靠性自愈方法及系统 | |
| CN108616114B (zh) | 一种含微网群的配电网分布式分层保护系统及方法 | |
| CN109659918A (zh) | 一种基于区块链的同步相量测量广域差动保护系统 | |
| CN112421612B (zh) | 一种基于配网运行状态中压主干线分支线分析方法 | |
| CN101826725B (zh) | 基于最短路径求电力合环路径的方法 | |
| CN104468367B (zh) | 一种地区调度数据网地址修改的方法 | |
| CN116826725A (zh) | 一种面向变电站为中心中压配电供区（s-scdn）馈线群fc考虑多目标的故障供电恢复方法 | |
| CN115149526A (zh) | 有源配电网有计划孤岛时分布式馈线自动化供电恢复方法 | |
| CN114530833A (zh) | 一种多联络复杂配电网故障自愈系统及方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19898284 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19898284 Country of ref document: EP Kind code of ref document: A1 |