Digitalization of Northern Power Distribution Zone in PJSC “LENENERGO”

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The MAIN JOURNAL for POWER GRID SPECIALISTS in RUSSIA

3 - 6 J U N E 2 0 1 9

MADRID, SPAIN

The MAIN JOURNAL for POWER GRID SPECIALISTS in RUSSIA

3 - 6 J U N E 2 0 1 9

MADRID, SPAIN

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digital transformation

Digitalization of Northern
Power Distribution Zone
in PJSC "LENENERGO"

Igor KUZMIN,

ﬁ rst deputy director

general — chief engineer

of PJSC "LENENERGO"

Niyaz MAGDEEV,

deputy chief engineer on

technological development

and innovation of PJSC

"LENENERGO"

Yuriy GULIM,

main specialist of Depart-

ment of technological

development and

innovation of PJSC

"LENENERGO"

dated 28.07.2017 and recognized by the Russian

Federation Presidential Decree no. 204 dated 07.05.2018). "Digital
Transformation 2030"

oncept was developed by PJSC "Rosseti"

for establishing one-for-all approach to the digital transformation
of processes in power grid. In accordance with the principal provi-
sions of the Concept, digital transformation of PJSC "LENENERGO"
electrical grid is performed and a pilot project to create digital
power distribution zone is implemented.

he digital network assumes a breakthrough

state of power system characterized by integra-

tion of electrical network, load customers and

power generators into a single automated sys-

tem at a technology level.

First of all, the network digitalization is expected the

following:

• resilience after power outages;

• network resilience to physical and cybernetic interfer-

ence of intruders;

• ensuring required power quality;

• ensuring the synchronous operation of generation re-

sources and energy storage system;

• potential active involvement of consumers in network

operation;

• integration of new high-tech products into network.

As a part of an interdisciplinary approach to digital

transformation of networks, the project strategy (Fig-

ure 1) includes the implementation of measures in the

following areas:

• creation of a Single Grid Control Center (GCC) and

the introduction of automated dispatch management

system for network operation control with an advanced

complex of computational analysis;

• construction of 35-110 kV digital substations;

• modernization of secondary infrastructure in operat-

ing 35-110 kV substations;

• automation of 6-20 kV network (creation of digital

power distribution zones);

• introduction of electrical energy smart metering to

reduce business losses and to use accounting records

in computational and analytical functions;

• creation of multiservice communication network.

As a result of the interdisciplinary approach to net-

works modernization and subsequent parallel operation

of all functional areas, technical and economic eﬀ ects

from the implementation of PJSC "LENENERGO" digital

transformation concept could be achieved.

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Under the multiple application of modern technolo-

gies aimed at digitalization, it is planned to achieve the

following eﬀ ects:

• reduction of power losses;

• reduction of operating expenses;

• improvement of reliability indexes (average outage

duration and frequency of power failures) by 50%;

• ensuring greater availability of technological connec-

tion for new consumers.

The project will be implemented since 2018 to 2030.

Project implementation will consist of three main stages.

On the ﬁ rst stage preparation of a technological base

for digitalization is planned, as well as introduction of

a modern network management system under creation

of a single grid control center for PJSC "LENENERGO".

A number of pilot multiple-purpose projects for the sub-

sequent distribution of the most eﬃ cient business solu-

tions in PJSC "LENENERGO" will be also implemented.

The stage is scheduled for completion in 2022.

The second stage is aimed at the complete automa-

tion of power grid facilities and management process-

es, monitoring and "bottleneck" searching. This stage

will eliminate the actual problems in the organization of

ope rational and technological management. Also, it will

identify targets for investment over the next 5-10 years.

The stage is scheduled for completion in 2025.

In the third stage the digitization of the main elements

of digital network (35-110 kV substations and power dis-

tribution zones) will be completed. In addition, during this

stage introduction of technologies based on artiﬁ cial in-

telligence and machine learning will be developed. Then

Big Data technology comes into play when all available

methods of automation and control are implemented

and the eﬃ ciency increase task is already not so impor-

tant. It analyzes a huge amount of data, searches for

Fig. 1. Structure of the digital transformation of PJSC "LENENERGO" electrical grid

Single Grid Control Center

(GCC)

110 kV network

35 kV network

Сonsumers

0.4-20 kV network

MANAGEMENT COMMITTEE

ON IMPLEMENTATION OF PROJECTS AIMED

AT DIGITAL NETWORKS CREATION

Head of the Management Committee:

director general of PJSC "LENENERGO"

WORKING GROUP ON IMPLEMENTATION OF

PROJECTS AIMED AT DIGITAL NETWORKS

CREATION

Head of the working group:

ﬁ rst deputy director general - chief engineer

“Single Grid

Control Center”

direction

“Digital

substations”

direction

“Digital power

distribution zone”

direction

Research institutes, leading equipment manufacturers,

software developers, design organizations

Fig. 2. Project group

new dependences of key performance indicators of the

company and suggests creation of new company man-

agement algorithms. This process is aimed at a qualita-

tive leap in improving eﬃ ciency of all processes and it

will provide at least 10% growth of the main parameters:

reliability, eﬃ ciency, workforce productivity. The stage is

scheduled for completion in 2030.

A number of working groups on digitalization areas

chaired by the Management Committee (Figure 2) was

The 25th CIRED Session
Special issue, June 2019

Page 4

TAL

TRA

SFORMAT

created for the adoption of collegial technical decisions

in PJSC "LENENERGO" and for implementation of

projects aimed at digital networks establishment.

The ﬁ rst deputy director general – chief engineer

of PJSC "LENENERGO" is responsible for the imple-

mentation of pilot projects aimed at digitalization. The

working group participants: the unit of technological de-

velopment and innovation, the unit of information tech-

nology, the unit of service implementation and devel-

opment, the unit of prospective development, the unit

of operative and process management and situational

management, the economic unit, the unit of ﬁ xed assets

construction, security and representatives of operating

branches. The working group consists of 42 people in

total.

This organization structure allows the working group

to interact qualitatively with research institutes, equip-

ment manufacturers, design organizations and to de-

velop the most eﬀ ective generic solutions for later use

in digitalization of PJSC "LENENERGO" network.

An important step of the transition to digital networks

is the creation of Single Grid Control Center and intro-

duction of operative controlling complex with advanced

computational and analytical functions for managing

digital electrical network.

On the sidelines of the Single Grid Control Center

creation, work on pilot projects aimed at creating digital

networks (digital power distribution zone, digital sub-

stations, active-adaptive network sections in various

power distribution zones) will be performed. According

to the results of the pilot project implementation, the

most eﬀ ective business solutions will be implemented

throughout the network of PJSC "LENENERGO".

Digital power distribution zone is a highly automated

power distribution area controlled in real time. It pro-

vides observability and controllability

through digital communication networks.

Also, it monitors the operating conditions

and modes of power system equipment.

Digital power distribution zone has self-

test functionality and self-repairing func-

tions, as well as smart metering of elec-

tric power consumption.

The pilot project aimed at digitiza-

tion of 6-10 kV distribution electrical

networks is being implemented in PJSC

"LENENERGO" as a part of Northern

power distribution zone served by PJSC

"LENENERGO" branch — "Cable Net-

work" (Figure 3).

So far, the Northern power distribu-

tion zone operates 0.4-10 kV electrical

network in the Kalininskiy and Vyborgs-

kiy administrative regions of St. Peters-

burg. In the customer basin of power

distribution zone (the area is 50.11 km

)

1048 transformer substations and

6-10 kV power distribution stations are

located, length of 6-10 kV cable lines is

2089.84 km, length of 0.4 kV cable lines

is 1032.17 km. About 850 000 people live

in the area of Northern power distribution

zone responsibility. Watt consumption is ~380 MW, and

the secondary power need is ~101 MW. Electric power

losses are 13.58%.

The project of creating a digital power distribution

zone is planned to be divided in stages in 2018-2021.

As a part of the

ﬁ rst stage

, introduction of digital

network elements in the Northern power distribution

zone will be provided: short-circuit current indicators,

data aquisition and data communication units, ﬁ bre-

optic communication lines, automated information and

measurement systems of electricity revenue metering,

controllers. Mentioned elements will ensure the net-

work observability.

The following stages of creating a digital power dis-

tribution zone become possible only after performing

an inclusive design. Termination of design and survey

work is scheduled in 2019.

As part of the

second stage

, implementation of

a digital power distribution zone management system

(including the functions of automatic fault isolation, net-

work self-repairing) is planned. The management sys-

tem will be based on the operative dispatching service

of the Single Grid Control Center (within the framework

of the GCC project). The dispatching service will com-

bine advanced computational and analytical functions

and integration of systems for automated information

and measurement, electricity revenue metering, short-

circuit current indication, operating telecontrol and

communication with power distribution zone facilities.

The stage completion is scheduled in 2020.

As part of the

third stage

, installation of managed

network elements and the later remote control of 100%

power distribution zone facilities is planned. Subse-

quent subsystems integration into the implemented

software and hardware complex of the digital power

Mostly

residential

electrical

customers

Petrodvortsovy

Pushkinsky

Kolpinsky

Kurortny

Vybogsky

Primorsky

Petrogradsky

Tsetralnyy

Vasileostovsky

Admiralteisky

Kalininsky
Krasnogvardeysky
Nevsky
Frunzensky

Kirovsky

Krasnoselsky

Moscovsky

Krondshtat

~380

MVA

Fig. 3. Northern power distribution zone served by PJSC "LENENERGO"
branch — "Cable network"

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distribution zone management system will be also per-

formed. Implementation of self-repairing functions and

automatic optimization of network operation is planned.

The stage completion is scheduled in December 2021.

As a result of the project implementation, elec-

tric power losses reduction by 7.45% is expected. The

achievement of such a result will be facilitated by install-

ing systems of automated power consumption metering,

automatic monitoring of electricity imbalance, unac-

counted and non-contractual consumption, automatic

monitoring of areas with non-standard power quality.

The digital power distribution zone project will have

a signiﬁ cant impact on the ﬁ nancial indexation. Engi-

neering process automation will result in optimization

of the organization structure of power distribution zone.

The maintenance costs will be reduced by 10.8% (us-

ing low-maintenance equipment, simplifying calibration

of instruments, remote diagnostics and self-diagnostics

of equipment and systems). Cost of fuel and lubricants

will be decreased by 50%. As a whole, this will result in

cutting the speciﬁ c operational expenditures (OPEX) of

power distribution zone at least by 15.2%.

Approximately the same level (15%) is expected to

be achieved while cutting capital expenses (CAPEX).

The eﬀ ect is planned to be achieved by reduction in

requirements for new construction (or facilities reno-

vation and transformer capacity increase) through en-

suring the network observability and estimating power

ﬂ ows in various modes based on actual data and au-

tomatic mode optimization (balanced load is ensured).

An added value will be achieved due to the potential

automatic design engineering (in CAD system) cutting

of the design and survey work cost. In addition, due to

digital technology, the volume and cost of commission-

ing work are reduced. Technological diversity of stan-

dard facilities and digital networks should be taken into

account: when using digital technology, it is assumed

a massive reduction of copper connections.

Electrical network digitalization will signiﬁ cantly im-

prove power supply reliability. Based on the analysis of

the completed stages of design and survey work con-

cerning creation of active adaptive networks, the intend-

ed reduction of SAIDI and SAIFI indicators by the end

of the pilot project to create a digital power distribution

zone was determined as 50% in relation to the current

status. It is conﬁ rmed by expert assessment of operating

electrical networks. SAIDI and SAIFI decline will occur

as the introduction of equipment aimed at network digi-

talization. The eﬀ ect will be achieved through the net-

work self-restoration function, automated localization of

failed elements, balance load, monitoring, self-diagnos-

tics and remote controllability of the network.

According to the results of the project implementa-

tion, internal business processes of PJSC "LENENER-

GO" will be optimized (Table 1).

Electrical network digitalization will inﬂ uence not

only on the eﬃ ciency of power grid operation, but it will

also have a signiﬁ cant impact on the service quality for

an ultimate customer:

• the time for technological connection of consumers

will be reduced by introducing a settlement function

for modeling requirements speciﬁ cations and dead-

lines to fulﬁ l the engagements on technological con-

nection, as well as decreasing of new construction

for technological connection due to balanced load;

• power quality will be improved (voltage and fre-

quency deviation) due to the optimization of electri-

cal network modes and schemes as well as power

quality monitoring;

• power supply interruption time will be shortened

due to the network controllability, the introduction

of a self-restoration function and automatic localiza-

tion of failed elements.

PJSC "LENENERGO" leaders and experts believe

as well that electrical grid digitalization will help not

only to achieve economic and technical eﬀ ects when

solving application tasks, but it will signiﬁ cantly inﬂ u-

ence the following global factors of economic develop-

ment and life quality improvement:

1) high level of environmental conditions, high stan-

dards of electric power supply and service quality;

2) competitive advantage of domestic power engineer-

ing industry and information systems;

3) environmental improvement through reducing loss-

es and applying new energy-saving technologies,

as well as using eco-friendlier equipment.

Table 1. Planned changes of business processes in PJSC "LENENERGO" as a result of the project implementation

Indicator

Deﬁ nition

Adjustment of

engineering processes

Automation of electrical mode control, automated localization of failed elements, automating

response to changes in the electrical grid, followed by the ultimate solutions to prevent

accidents and to ensure power supply with increased reliability and economic eﬃ ciency.

Adjustment of

business processes

Automation of emergency reserve, automated suggestions for maintenance and

investment programs, modeling of requirements speciﬁ cations and deadlines to implement

technological connection, automatic interaction with consumers.

Changes in the organiza-

tion structure of power

distribution zone

In accordance with the target structure of the Single Grid Control Center, dispatching

department is excluded from the power distribution zone. Further changes in the

organization structure are possible.

Adjustment of standard

number of employees

Through the automation of process management (control of switching devices, automatic

localization of the failed elements, etc.), as well as business processes, it is expected the

optimization of standard number of employees.

The 25th CIRED Session
Special issue, June 2019

Оригинал статьи: Digitalization of Northern Power Distribution Zone in PJSC “LENENERGO”

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Digital transformation of electric power industry is one of the purposes of the national program “Digital Economy of the Russian Federation” (approved by the Russian Federation Governmental Order no. 1632-р dated 28.07.2017 and recognized by the Russian Federation Presidential Decree no. 204 dated 07.05.2018). “Digital Transformation 2030” сoncept was developed by PJSC “Rosseti” for establishing one-for-all approach to the digital transformation of processes in power grid. In accordance with the principal provisions
of the Concept, digital transformation of PJSC “LENENERGO” electrical grid is performed and a pilot project to create digital power distribution zone is implemented.